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authorDaniel Baumann <daniel.baumann@progress-linux.org>2019-09-03 10:23:38 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2019-09-03 10:23:38 +0000
commit574098461cd45be12a497afbdac6f93c58978387 (patch)
tree9eb60a5930b7c20d42f7fde1e234cae3968ed3d9 /web/api/queries
parentAdding upstream version 1.16.1. (diff)
downloadnetdata-574098461cd45be12a497afbdac6f93c58978387.tar.xz
netdata-574098461cd45be12a497afbdac6f93c58978387.zip
Adding upstream version 1.17.0.upstream/1.17.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'web/api/queries')
-rw-r--r--web/api/queries/Makefile.in706
-rw-r--r--web/api/queries/README.md137
-rw-r--r--web/api/queries/average/Makefile.in514
-rw-r--r--web/api/queries/average/README.md10
-rw-r--r--web/api/queries/average/average.c9
-rw-r--r--web/api/queries/des/Makefile.in514
-rw-r--r--web/api/queries/des/README.md14
-rw-r--r--web/api/queries/incremental_sum/Makefile.in514
-rw-r--r--web/api/queries/incremental_sum/README.md12
-rw-r--r--web/api/queries/max/Makefile.in514
-rw-r--r--web/api/queries/max/README.md10
-rw-r--r--web/api/queries/median/Makefile.in514
-rw-r--r--web/api/queries/median/README.md12
-rw-r--r--web/api/queries/min/Makefile.in514
-rw-r--r--web/api/queries/min/README.md10
-rw-r--r--web/api/queries/query.c876
-rw-r--r--web/api/queries/rrdr.h12
-rw-r--r--web/api/queries/ses/Makefile.in514
-rw-r--r--web/api/queries/ses/README.md14
-rw-r--r--web/api/queries/stddev/Makefile.in514
-rw-r--r--web/api/queries/stddev/README.md23
-rw-r--r--web/api/queries/sum/Makefile.in514
-rw-r--r--web/api/queries/sum/README.md12
23 files changed, 6218 insertions, 265 deletions
diff --git a/web/api/queries/Makefile.in b/web/api/queries/Makefile.in
new file mode 100644
index 00000000..dca8341d
--- /dev/null
+++ b/web/api/queries/Makefile.in
@@ -0,0 +1,706 @@
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diff --git a/web/api/queries/README.md b/web/api/queries/README.md
index 6a55398a..458179c7 100644
--- a/web/api/queries/README.md
+++ b/web/api/queries/README.md
@@ -4,16 +4,16 @@ Netdata database can be queried with `/api/v1/data` and `/api/v1/badge.svg` REST
Every data query accepts the following parameters:
-name|required|description
-:----:|:----:|:---
-`chart`|yes|The chart to be queried.
-`points`|no|The number of points to be returned. Netdata can reduce number of points by applying query grouping methods. If not given, the result will have the same granularity as the database (although this relates to `gtime`).
-`before`|no|The absolute timestamp or the relative (to now) time the query should finish evaluating data. If not given, it defaults to the timestamp of the latest point in the database.
-`after`|no|The absolute timestamp or the relative (to `before`) time the query should start evaluating data. if not given, it defaults to the timestamp of the oldest point in the database.
-`group`|no|The grouping method to use when reducing the points the database has. If not given, it defaults to `average`.
-`gtime`|no|A resampling period to change the units of the metrics (i.e. setting this to `60` will convert `per second` metrics to `per minute`. If not given it defaults to granularity of the database.
-`options`|no|A bitmap of options that can affect the operation of the query. Only 2 options are used by the query engine: `unaligned` and `percentage`. All the other options are used by the output formatters. The default is to return aligned data.
-`dimensions`|no|A simple pattern to filter the dimensions to be queried. The default is to return all the dimensions of the chart.
+|name|required|description|
+|:--:|:------:|:----------|
+|`chart`|yes|The chart to be queried.|
+|`points`|no|The number of points to be returned. Netdata can reduce number of points by applying query grouping methods. If not given, the result will have the same granularity as the database (although this relates to `gtime`).|
+|`before`|no|The absolute timestamp or the relative (to now) time the query should finish evaluating data. If not given, it defaults to the timestamp of the latest point in the database.|
+|`after`|no|The absolute timestamp or the relative (to `before`) time the query should start evaluating data. if not given, it defaults to the timestamp of the oldest point in the database.|
+|`group`|no|The grouping method to use when reducing the points the database has. If not given, it defaults to `average`.|
+|`gtime`|no|A resampling period to change the units of the metrics (i.e. setting this to `60` will convert `per second` metrics to `per minute`. If not given it defaults to granularity of the database.|
+|`options`|no|A bitmap of options that can affect the operation of the query. Only 2 options are used by the query engine: `unaligned` and `percentage`. All the other options are used by the output formatters. The default is to return aligned data.|
+|`dimensions`|no|A simple pattern to filter the dimensions to be queried. The default is to return all the dimensions of the chart.|
## Operation
@@ -23,22 +23,22 @@ The query engine works as follows (in this order):
`after` and `before` define a time-frame, accepting:
-- **absolute timestamps** (unix timestamps, i.e. seconds since epoch).
+- **absolute timestamps** (unix timestamps, i.e. seconds since epoch).
-- **relative timestamps**:
+- **relative timestamps**:
- `before` is relative to now and `after` is relative to `before`.
-
- Example: `before=-60&after=-60` evaluates to the time-frame from -120 up to -60 seconds in
- the past, relative to the latest entry of the database of the chart.
+ `before` is relative to now and `after` is relative to `before`.
+
+ Example: `before=-60&after=-60` evaluates to the time-frame from -120 up to -60 seconds in
+ the past, relative to the latest entry of the database of the chart.
The engine verifies that the time-frame requested is available at the database:
-- If the requested time-frame overlaps with the database, the excess requested
- will be truncated.
-
-- If the requested time-frame does not overlap with the database, the engine will
- return an empty data set.
+- If the requested time-frame overlaps with the database, the excess requested
+ will be truncated.
+
+- If the requested time-frame does not overlap with the database, the engine will
+ return an empty data set.
At the end of this operation, `after` and `before` are absolute timestamps.
@@ -49,27 +49,26 @@ expressed with fewer points, compared to what is available at the database.
There are 2 uses that enable this feature:
-- The caller requests a specific number of `points` to be returned.
-
- For example, for a time-frame of 10 minutes, the database has 600 points (1/sec),
- while the caller requested these 10 minutes to be expressed in 200 points.
-
- This feature is used by netdata dashboards when you zoom-out the charts.
- The dashboard is requesting the number of points the user's screen has.
- This saves bandwidth and speeds up the browser (fewer points to evaluate for drawing the charts).
-
-- The caller requests a **re-sampling** of the database, by setting `gtime` to any value
- above the granularity of the chart.
-
- For example, the chart's units is `requests/sec` and caller wants `requests/min`.
-
+- The caller requests a specific number of `points` to be returned.
+
+ For example, for a time-frame of 10 minutes, the database has 600 points (1/sec),
+ while the caller requested these 10 minutes to be expressed in 200 points.
+
+ This feature is used by Netdata dashboards when you zoom-out the charts.
+ The dashboard is requesting the number of points the user's screen has.
+ This saves bandwidth and speeds up the browser (fewer points to evaluate for drawing the charts).
+- The caller requests a **re-sampling** of the database, by setting `gtime` to any value
+ above the granularity of the chart.
+
+ For example, the chart's units is `requests/sec` and caller wants `requests/min`.
+
Using `points` and `gtime` the query engine tries to find a best fit for **database-points**
vs **result-points** (we call this ratio `group points`). It always tries to keep `group points`
an integer. Keep in mind the query engine may shift `after` if required. See also the [example](#example).
#### Time-frame Alignment
-Alignment is a very important aspect of netdata queries. Without it, the animated
+Alignment is a very important aspect of Netdata queries. Without it, the animated
charts on the dashboards would constantly [change shape](#example) during incremental updates.
To provide consistent grouping through time, the query engine (by default) aligns
@@ -79,7 +78,7 @@ For example, if `group points` is 60 and alignment is enabled, the engine will r
each point with durations XX:XX:00 - XX:XX:59, matching whole minutes.
To disable alignment, pass `&options=unaligned` to the query.
-
+
#### Query Execution
To execute the query, the engine evaluates all dimensions of the chart, one after another.
@@ -100,18 +99,18 @@ For each value it calls the **grouping method** given with the `&group=` query p
The following grouping methods are supported. These are given all the values in the time-frame
and they group the values every `group points`.
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min&value_color=blue) finds the minimum value
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max&value_color=lightblue) finds the maximum value
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average&value_color=yellow) finds the average value
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=sum&after=-60&label=sum&units=requests&value_color=orange) adds all the values and returns the sum
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=median&after=-60&label=median&value_color=red) sorts the values and returns the value in the middle of the list
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=stddev&after=-60&label=stddev&value_color=green) finds the standard deviation of the values
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=cv&after=-60&label=cv&units=pcent&value_color=yellow) finds the relative standard deviation (coefficient of variation) of the values
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=ses&after=-60&label=ses&value_color=brown) finds the exponential weighted moving average of the values
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=des&after=-60&label=des&value_color=blue) applies Holt-Winters double exponential smoothing
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=incremental_sum&after=-60&label=incremental_sum&value_color=red) finds the difference of the last vs the first value
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min&value_color=blue) finds the minimum value
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max&value_color=lightblue) finds the maximum value
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average&value_color=yellow) finds the average value
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=sum&after=-60&label=sum&units=requests&value_color=orange) adds all the values and returns the sum
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=median&after=-60&label=median&value_color=red) sorts the values and returns the value in the middle of the list
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=stddev&after=-60&label=stddev&value_color=green) finds the standard deviation of the values
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=cv&after=-60&label=cv&units=pcent&value_color=yellow) finds the relative standard deviation (coefficient of variation) of the values
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=ses&after=-60&label=ses&value_color=brown) finds the exponential weighted moving average of the values
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=des&after=-60&label=des&value_color=blue) applies Holt-Winters double exponential smoothing
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=incremental_sum&after=-60&label=incremental_sum&value_color=red) finds the difference of the last vs the first value
-The examples shown above, are live information from the `successful` web requests of the global netdata registry.
+The examples shown above, are live information from the `successful` web requests of the global Netdata registry.
## Further processing
@@ -129,44 +128,44 @@ the result.
## Example
-When netdata is reducing metrics, it tries to return always the same boundaries. So, if we want 10s averages, it will always return points starting at a `unix timestamp % 10 = 0`.
+When Netdata is reducing metrics, it tries to return always the same boundaries. So, if we want 10s averages, it will always return points starting at a `unix timestamp % 10 = 0`.
Let's see why this is needed, by looking at the error case.
Assume we have 5 points:
-| time | value |
-| :-: | :-: |
-| 00:01 | 1 |
-| 00:02 | 2 |
-| 00:03 | 3 |
-| 00:04 | 4 |
-| 00:05 | 5 |
+|time|value|
+|:--:|:---:|
+|00:01|1|
+|00:02|2|
+|00:03|3|
+|00:04|4|
+|00:05|5|
-At 00:04 you ask for 2 points for 4 seconds in the past. So `group = 2`. netdata would return:
+At 00:04 you ask for 2 points for 4 seconds in the past. So `group = 2`. Netdata would return:
-| point | time | value |
-| :-: | :-: | :-: |
-| 1 | 00:01 - 00:02 | 1.5 |
-| 2 | 00:03 - 00:04 | 3.5 |
+|point|time|value|
+|:---:|:--:|:---:|
+|1|00:01 - 00:02|1.5|
+|2|00:03 - 00:04|3.5|
A second later the chart is to be refreshed, and makes again the same request at 00:05. These are the points that would have been returned:
-| point | time | value |
-| :-: | :-: | :-: |
-| 1 | 00:02 - 00:03 | 2.5 |
-| 2 | 00:04 - 00:05 | 4.5 |
+|point|time|value|
+|:---:|:--:|:---:|
+|1|00:02 - 00:03|2.5|
+|2|00:04 - 00:05|4.5|
**Wait a moment!** The chart was shifted just one point and it changed value! Point 2 was 3.5 and when shifted to point 1 is 2.5! If you see this in a chart, it's a mess. The charts change shape constantly.
-For this reason, netdata always aligns the data it returns to the `group`.
+For this reason, Netdata always aligns the data it returns to the `group`.
-When you request `points=1`, netdata understands that you need 1 point for the whole database, so `group = 3600`. Then it tries to find the starting point which would be `timestamp % 3600 = 0` Within a database of 3600 seconds, there is one such point for sure. Then it tries to find the average of 3600 points. But, most probably it will not find 3600 of them (for just 1 out of 3600 seconds this query will return something).
+When you request `points=1`, Netdata understands that you need 1 point for the whole database, so `group = 3600`. Then it tries to find the starting point which would be `timestamp % 3600 = 0` Within a database of 3600 seconds, there is one such point for sure. Then it tries to find the average of 3600 points. But, most probably it will not find 3600 of them (for just 1 out of 3600 seconds this query will return something).
So, the proper way to query the database is to also set at least `after`. The following call will returns 1 point for the last complete 10-second duration (it starts at `timestamp % 10 = 0`):
-http://netdata.firehol.org/api/v1/data?chart=system.cpu&points=1&after=-10&options=seconds
+<http://netdata.firehol.org/api/v1/data?chart=system.cpu&points=1&after=-10&options=seconds>
When you keep calling this URL, you will see that it returns one new value every 10 seconds, and the timestamp always ends with zero. Similarly, if you say `points=1&after=-5` it will always return timestamps ending with 0 or 5.
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/web/api/queries/average/Makefile.in b/web/api/queries/average/Makefile.in
new file mode 100644
index 00000000..ac0d61ec
--- /dev/null
+++ b/web/api/queries/average/Makefile.in
@@ -0,0 +1,514 @@
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+
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diff --git a/web/api/queries/average/README.md b/web/api/queries/average/README.md
index 873b60a5..6b2c0dfa 100644
--- a/web/api/queries/average/README.md
+++ b/web/api/queries/average/README.md
@@ -30,12 +30,12 @@ It can also be used in APIs and badges as `&group=average` in the URL.
Examining last 1 minute `successful` web server responses:
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average&value_color=orange)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average&value_color=orange)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
## References
-- [https://en.wikipedia.org/wiki/Average](https://en.wikipedia.org/wiki/Average).
+- <https://en.wikipedia.org/wiki/Average>.
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Faverage%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Faverage%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/web/api/queries/average/average.c b/web/api/queries/average/average.c
index c871b877..2c64358e 100644
--- a/web/api/queries/average/average.c
+++ b/web/api/queries/average/average.c
@@ -46,9 +46,12 @@ calculated_number grouping_flush_average(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_
*rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
}
else {
- if(unlikely(r->internal.resampling_group != 1))
- value = g->sum / r->internal.resampling_divisor;
- else
+ if(unlikely(r->internal.resampling_group != 1)) {
+ if (unlikely(r->result_options & RRDR_RESULT_OPTION_VARIABLE_STEP))
+ value = g->sum / g->count / r->internal.resampling_divisor;
+ else
+ value = g->sum / r->internal.resampling_divisor;
+ } else
value = g->sum / g->count;
}
diff --git a/web/api/queries/des/Makefile.in b/web/api/queries/des/Makefile.in
new file mode 100644
index 00000000..1d4e47f7
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+++ b/web/api/queries/des/Makefile.in
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diff --git a/web/api/queries/des/README.md b/web/api/queries/des/README.md
index 486221cb..57ac805d 100644
--- a/web/api/queries/des/README.md
+++ b/web/api/queries/des/README.md
@@ -55,14 +55,14 @@ It can also be used in APIs and badges as `&group=des` in the URL.
Examining last 1 minute `successful` web server responses:
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average&value_color=yellow)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=ses&after=-60&label=single+exponential+smoothing&value_color=yellow)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=des&after=-60&label=double+exponential+smoothing&value_color=orange)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average&value_color=yellow)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=ses&after=-60&label=single+exponential+smoothing&value_color=yellow)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=des&after=-60&label=double+exponential+smoothing&value_color=orange)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
## References
-- [https://en.wikipedia.org/wiki/Exponential_smoothing](https://en.wikipedia.org/wiki/Exponential_smoothing).
+- <https://en.wikipedia.org/wiki/Exponential_smoothing>.
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fdes%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fdes%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
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diff --git a/web/api/queries/incremental_sum/README.md b/web/api/queries/incremental_sum/README.md
index 47f833f3..10878890 100644
--- a/web/api/queries/incremental_sum/README.md
+++ b/web/api/queries/incremental_sum/README.md
@@ -24,13 +24,13 @@ It can also be used in APIs and badges as `&group=incremental_sum` in the URL.
Examining last 1 minute `successful` web server responses:
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=incremental_sum&after=-60&label=incremental+sum&value_color=orange)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=incremental_sum&after=-60&label=incremental+sum&value_color=orange)
## References
-- none
+- none
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fincremental_sum%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fincremental_sum%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
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diff --git a/web/api/queries/max/README.md b/web/api/queries/max/README.md
index 34dff021..b0f6f648 100644
--- a/web/api/queries/max/README.md
+++ b/web/api/queries/max/README.md
@@ -22,12 +22,12 @@ It can also be used in APIs and badges as `&group=max` in the URL.
Examining last 1 minute `successful` web server responses:
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max&value_color=orange)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max&value_color=orange)
## References
-- [https://en.wikipedia.org/wiki/Sample_maximum_and_minimum](https://en.wikipedia.org/wiki/Sample_maximum_and_minimum).
+- <https://en.wikipedia.org/wiki/Sample_maximum_and_minimum>.
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fmax%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fmax%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
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diff --git a/web/api/queries/median/README.md b/web/api/queries/median/README.md
index 72f51a24..a6980124 100644
--- a/web/api/queries/median/README.md
+++ b/web/api/queries/median/README.md
@@ -27,13 +27,13 @@ It can also be used in APIs and badges as `&group=median` in the URL.
Examining last 1 minute `successful` web server responses:
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=median&after=-60&label=median&value_color=orange)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=median&after=-60&label=median&value_color=orange)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
## References
-- [https://en.wikipedia.org/wiki/Median](https://en.wikipedia.org/wiki/Median).
+- <https://en.wikipedia.org/wiki/Median>.
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fmedian%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fmedian%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
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+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+ ctags-am distclean distclean-generic distdir dvi dvi-am html \
+ html-am info info-am install install-am install-data \
+ install-data-am install-dvi install-dvi-am install-exec \
+ install-exec-am install-html install-html-am install-info \
+ install-info-am install-man install-pdf install-pdf-am \
+ install-ps install-ps-am install-strip installcheck \
+ installcheck-am installdirs maintainer-clean \
+ maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+ pdf-am ps ps-am tags-am uninstall uninstall-am
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/web/api/queries/min/README.md b/web/api/queries/min/README.md
index 28f6dbf5..6276faec 100644
--- a/web/api/queries/min/README.md
+++ b/web/api/queries/min/README.md
@@ -22,12 +22,12 @@ It can also be used in APIs and badges as `&group=min` in the URL.
Examining last 1 minute `successful` web server responses:
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min&value_color=orange)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min&value_color=orange)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
## References
-- [https://en.wikipedia.org/wiki/Sample_maximum_and_minimum](https://en.wikipedia.org/wiki/Sample_maximum_and_minimum).
+- <https://en.wikipedia.org/wiki/Sample_maximum_and_minimum>.
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fmin%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fmin%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/web/api/queries/query.c b/web/api/queries/query.c
index e90dc8af..af3bcfe3 100644
--- a/web/api/queries/query.c
+++ b/web/api/queries/query.c
@@ -376,7 +376,7 @@ static inline void rrdr_done(RRDR *r, long rrdr_line) {
// ----------------------------------------------------------------------------
// fill RRDR for a single dimension
-static inline void do_dimension(
+static inline void do_dimension_variablestep(
RRDR *r
, long points_wanted
, RRDDIM *rd
@@ -384,16 +384,16 @@ static inline void do_dimension(
, time_t after_wanted
, time_t before_wanted
){
- RRDSET *st = r->st;
+// RRDSET *st = r->st;
time_t
now = after_wanted,
- dt = st->update_every,
+ dt = r->update_every,
max_date = 0,
min_date = 0;
long
- group_size = r->group,
+// group_size = r->group,
points_added = 0,
values_in_group = 0,
values_in_group_non_zero = 0,
@@ -403,102 +403,240 @@ static inline void do_dimension(
group_value_flags = RRDR_VALUE_NOTHING;
struct rrddim_query_handle handle;
- uint8_t initialized_query;
calculated_number min = r->min, max = r->max;
size_t db_points_read = 0;
+ time_t db_now = now;
+ storage_number n_curr, n_prev = SN_EMPTY_SLOT;
+ calculated_number value;
+
+ for(rd->state->query_ops.init(rd, &handle, now, before_wanted) ; points_added < points_wanted ; now += dt) {
+ // make sure we return data in the proper time range
+ if (unlikely(now > before_wanted)) {
+#ifdef NETDATA_INTERNAL_CHECKS
+ r->internal.log = "stopped, because attempted to access the db after 'wanted before'";
+#endif
+ break;
+ }
+ if (unlikely(now < after_wanted)) {
+#ifdef NETDATA_INTERNAL_CHECKS
+ r->internal.log = "skipped, because attempted to access the db before 'wanted after'";
+#endif
+ continue;
+ }
+
+ while (now >= db_now && (!rd->state->query_ops.is_finished(&handle) ||
+ does_storage_number_exist(n_prev))) {
+ value = NAN;
+ if (does_storage_number_exist(n_prev)) {
+ // use the previously read database value
+ n_curr = n_prev;
+ } else {
+ // read the value from the database
+ n_curr = rd->state->query_ops.next_metric(&handle, &db_now);
+ }
+ n_prev = SN_EMPTY_SLOT;
+ // db_now has a different value than above
+ if (likely(now >= db_now)) {
+ if (likely(does_storage_number_exist(n_curr))) {
+ value = unpack_storage_number(n_curr);
+ if (likely(value != 0.0))
+ values_in_group_non_zero++;
+
+ if (unlikely(did_storage_number_reset(n_curr)))
+ group_value_flags |= RRDR_VALUE_RESET;
+ }
+ } else {
+ // We must postpone processing the value and fill the result with gaps instead
+ if (likely(does_storage_number_exist(n_curr))) {
+ n_prev = n_curr;
+ }
+ }
+ // add this value to grouping
+ r->internal.grouping_add(r, value);
+ values_in_group++;
+ db_points_read++;
+ }
+
+ if (0 == values_in_group) {
+ // add NAN to grouping
+ r->internal.grouping_add(r, NAN);
+ }
+
+ rrdr_line = rrdr_line_init(r, now, rrdr_line);
+
+ if(unlikely(!min_date)) min_date = now;
+ max_date = now;
+
+ // find the place to store our values
+ RRDR_VALUE_FLAGS *rrdr_value_options_ptr = &r->o[rrdr_line * r->d + dim_id_in_rrdr];
+
+ // update the dimension options
+ if(likely(values_in_group_non_zero))
+ r->od[dim_id_in_rrdr] |= RRDR_DIMENSION_NONZERO;
+
+ // store the specific point options
+ *rrdr_value_options_ptr = group_value_flags;
+
+ // store the value
+ value = r->internal.grouping_flush(r, rrdr_value_options_ptr);
+ r->v[rrdr_line * r->d + dim_id_in_rrdr] = value;
+
+ if(likely(points_added || dim_id_in_rrdr)) {
+ // find the min/max across all dimensions
+
+ if(unlikely(value < min)) min = value;
+ if(unlikely(value > max)) max = value;
+
+ }
+ else {
+ // runs only when dim_id_in_rrdr == 0 && points_added == 0
+ // so, on the first point added for the query.
+ min = max = value;
+ }
+
+ points_added++;
+ values_in_group = 0;
+ group_value_flags = RRDR_VALUE_NOTHING;
+ values_in_group_non_zero = 0;
+ }
+ rd->state->query_ops.finalize(&handle);
+
+ r->internal.db_points_read += db_points_read;
+ r->internal.result_points_generated += points_added;
+
+ r->min = min;
+ r->max = max;
+ r->before = max_date;
+ r->after = min_date - (r->group - 1) * dt;
+ rrdr_done(r, rrdr_line);
+
+ #ifdef NETDATA_INTERNAL_CHECKS
+ if(unlikely(r->rows != points_added))
+ error("INTERNAL ERROR: %s.%s added %zu rows, but RRDR says I added %zu.", r->st->name, rd->name, (size_t)points_added, (size_t)r->rows);
+ #endif
+}
- for(initialized_query = 0 ; points_added < points_wanted ; now += dt) {
+static inline void do_dimension_fixedstep(
+ RRDR *r
+ , long points_wanted
+ , RRDDIM *rd
+ , long dim_id_in_rrdr
+ , time_t after_wanted
+ , time_t before_wanted
+){
+ RRDSET *st = r->st;
+
+ time_t
+ now = after_wanted,
+ dt = r->update_every / r->group, /* usually is st->update_every */
+ max_date = 0,
+ min_date = 0;
+ long
+ group_size = r->group,
+ points_added = 0,
+ values_in_group = 0,
+ values_in_group_non_zero = 0,
+ rrdr_line = -1;
+
+ RRDR_VALUE_FLAGS
+ group_value_flags = RRDR_VALUE_NOTHING;
+
+ struct rrddim_query_handle handle;
+
+ calculated_number min = r->min, max = r->max;
+ size_t db_points_read = 0;
+ time_t db_now = now;
+
+ for(rd->state->query_ops.init(rd, &handle, now, before_wanted) ; points_added < points_wanted ; now += dt) {
// make sure we return data in the proper time range
if(unlikely(now > before_wanted)) {
- #ifdef NETDATA_INTERNAL_CHECKS
+#ifdef NETDATA_INTERNAL_CHECKS
r->internal.log = "stopped, because attempted to access the db after 'wanted before'";
- #endif
+#endif
break;
}
if(unlikely(now < after_wanted)) {
- #ifdef NETDATA_INTERNAL_CHECKS
+#ifdef NETDATA_INTERNAL_CHECKS
r->internal.log = "skipped, because attempted to access the db before 'wanted after'";
- #endif
+#endif
continue;
}
-
- if (unlikely(!initialized_query)) {
- rd->state->query_ops.init(rd, &handle, now, before_wanted);
- initialized_query = 1;
- }
// read the value from the database
//storage_number n = rd->values[slot];
#ifdef NETDATA_INTERNAL_CHECKS
- if (rd->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
-#ifdef ENABLE_DBENGINE
- if (now != handle.rrdeng.now)
- error("INTERNAL CHECK: Unaligned query for %s, database time: %ld, expected time: %ld", rd->id, (long)handle.rrdeng.now, (long)now);
-#endif
- } else if (rrdset_time2slot(st, now) != (long unsigned)handle.slotted.slot) {
+ if ((rd->rrd_memory_mode != RRD_MEMORY_MODE_DBENGINE) &&
+ (rrdset_time2slot(st, now) != (long unsigned)handle.slotted.slot)) {
error("INTERNAL CHECK: Unaligned query for %s, database slot: %lu, expected slot: %lu", rd->id, (long unsigned)handle.slotted.slot, rrdset_time2slot(st, now));
}
#endif
- storage_number n = rd->state->query_ops.next_metric(&handle);
- calculated_number value = NAN;
- if(likely(does_storage_number_exist(n))) {
+ db_now = now; // this is needed to set db_now in case the next_metric implementation does not set it
+ storage_number n = rd->state->query_ops.next_metric(&handle, &db_now);
+ for ( ; now <= db_now ; now += dt) {
+ calculated_number value = NAN;
+ if(likely(now >= db_now && does_storage_number_exist(n))) {
+#if defined(NETDATA_INTERNAL_CHECKS) && defined(ENABLE_DBENGINE)
+ if ((rd->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) && (now != handle.rrdeng.now)) {
+ error("INTERNAL CHECK: Unaligned query for %s, database time: %ld, expected time: %ld", rd->id, (long)handle.rrdeng.now, (long)now);
+ }
+#endif
+ value = unpack_storage_number(n);
+ if(likely(value != 0.0))
+ values_in_group_non_zero++;
- value = unpack_storage_number(n);
- if(likely(value != 0.0))
- values_in_group_non_zero++;
+ if(unlikely(did_storage_number_reset(n)))
+ group_value_flags |= RRDR_VALUE_RESET;
- if(unlikely(did_storage_number_reset(n)))
- group_value_flags |= RRDR_VALUE_RESET;
+ }
- }
+ // add this value for grouping
+ r->internal.grouping_add(r, value);
+ values_in_group++;
+ db_points_read++;
- // add this value for grouping
- r->internal.grouping_add(r, value);
- values_in_group++;
- db_points_read++;
+ if(unlikely(values_in_group == group_size)) {
+ rrdr_line = rrdr_line_init(r, now, rrdr_line);
- if(unlikely(values_in_group == group_size)) {
- rrdr_line = rrdr_line_init(r, now, rrdr_line);
+ if(unlikely(!min_date)) min_date = now;
+ max_date = now;
- if(unlikely(!min_date)) min_date = now;
- max_date = now;
+ // find the place to store our values
+ RRDR_VALUE_FLAGS *rrdr_value_options_ptr = &r->o[rrdr_line * r->d + dim_id_in_rrdr];
- // find the place to store our values
- RRDR_VALUE_FLAGS *rrdr_value_options_ptr = &r->o[rrdr_line * r->d + dim_id_in_rrdr];
+ // update the dimension options
+ if(likely(values_in_group_non_zero))
+ r->od[dim_id_in_rrdr] |= RRDR_DIMENSION_NONZERO;
- // update the dimension options
- if(likely(values_in_group_non_zero))
- r->od[dim_id_in_rrdr] |= RRDR_DIMENSION_NONZERO;
+ // store the specific point options
+ *rrdr_value_options_ptr = group_value_flags;
- // store the specific point options
- *rrdr_value_options_ptr = group_value_flags;
+ // store the value
+ calculated_number value = r->internal.grouping_flush(r, rrdr_value_options_ptr);
+ r->v[rrdr_line * r->d + dim_id_in_rrdr] = value;
- // store the value
- calculated_number value = r->internal.grouping_flush(r, rrdr_value_options_ptr);
- r->v[rrdr_line * r->d + dim_id_in_rrdr] = value;
+ if(likely(points_added || dim_id_in_rrdr)) {
+ // find the min/max across all dimensions
- if(likely(points_added || dim_id_in_rrdr)) {
- // find the min/max across all dimensions
+ if(unlikely(value < min)) min = value;
+ if(unlikely(value > max)) max = value;
- if(unlikely(value < min)) min = value;
- if(unlikely(value > max)) max = value;
+ }
+ else {
+ // runs only when dim_id_in_rrdr == 0 && points_added == 0
+ // so, on the first point added for the query.
+ min = max = value;
+ }
+ points_added++;
+ values_in_group = 0;
+ group_value_flags = RRDR_VALUE_NOTHING;
+ values_in_group_non_zero = 0;
}
- else {
- // runs only when dim_id_in_rrdr == 0 && points_added == 0
- // so, on the first point added for the query.
- min = max = value;
- }
-
- points_added++;
- values_in_group = 0;
- group_value_flags = RRDR_VALUE_NOTHING;
- values_in_group_non_zero = 0;
}
+ now = db_now;
}
- if (likely(initialized_query))
- rd->state->query_ops.finalize(&handle);
+ rd->state->query_ops.finalize(&handle);
r->internal.db_points_read += db_points_read;
r->internal.result_points_generated += points_added;
@@ -506,13 +644,13 @@ static inline void do_dimension(
r->min = min;
r->max = max;
r->before = max_date;
- r->after = min_date - (r->group - 1) * r->st->update_every;
+ r->after = min_date - (r->group - 1) * dt;
rrdr_done(r, rrdr_line);
- #ifdef NETDATA_INTERNAL_CHECKS
+#ifdef NETDATA_INTERNAL_CHECKS
if(unlikely(r->rows != points_added))
error("INTERNAL ERROR: %s.%s added %zu rows, but RRDR says I added %zu.", r->st->name, rd->name, (size_t)points_added, (size_t)r->rows);
- #endif
+#endif
}
// ----------------------------------------------------------------------------
@@ -589,22 +727,18 @@ static void rrd2rrdr_log_request_response_metdata(RRDR *r
}
#endif // NETDATA_INTERNAL_CHECKS
-RRDR *rrd2rrdr(
- RRDSET *st
- , long points_requested
- , long long after_requested
- , long long before_requested
- , RRDR_GROUPING group_method
- , long resampling_time_requested
- , RRDR_OPTIONS options
- , const char *dimensions
+// Returns 1 if an absolute period was requested or 0 if it was a relative period
+static int rrdr_convert_before_after_to_absolute(
+ long long *after_requestedp
+ , long long *before_requestedp
+ , time_t first_entry_t
+ , time_t last_entry_t
) {
- int aligned = !(options & RRDR_OPTION_NOT_ALIGNED);
-
int absolute_period_requested = -1;
+ long long after_requested, before_requested;
- time_t first_entry_t = rrdset_first_entry_t(st);
- time_t last_entry_t = rrdset_last_entry_t(st);
+ before_requested = *before_requestedp;
+ after_requested = *after_requestedp;
if(before_requested == 0 && after_requested == 0) {
// dump the all the data
@@ -614,25 +748,15 @@ RRDR *rrd2rrdr(
}
// allow relative for before (smaller than API_RELATIVE_TIME_MAX)
- if(((before_requested < 0)?-before_requested:before_requested) <= API_RELATIVE_TIME_MAX) {
- if(abs(before_requested) % st->update_every) {
- // make sure it is multiple of st->update_every
- if(before_requested < 0) before_requested = before_requested - st->update_every - before_requested % st->update_every;
- else before_requested = before_requested + st->update_every - before_requested % st->update_every;
- }
+ if(abs(before_requested) <= API_RELATIVE_TIME_MAX) {
if(before_requested > 0) before_requested = first_entry_t + before_requested;
- else before_requested = last_entry_t + before_requested;
+ else before_requested = last_entry_t + before_requested; //last_entry_t is not really now_t
+ //TODO: fix before_requested to be relative to now_t
absolute_period_requested = 0;
}
// allow relative for after (smaller than API_RELATIVE_TIME_MAX)
- if(((after_requested < 0)?-after_requested:after_requested) <= API_RELATIVE_TIME_MAX) {
- if(after_requested == 0) after_requested = -st->update_every;
- if(abs(after_requested) % st->update_every) {
- // make sure it is multiple of st->update_every
- if(after_requested < 0) after_requested = after_requested - st->update_every - after_requested % st->update_every;
- else after_requested = after_requested + st->update_every - after_requested % st->update_every;
- }
+ if(abs(after_requested) <= API_RELATIVE_TIME_MAX) {
after_requested = before_requested + after_requested;
absolute_period_requested = 0;
}
@@ -654,9 +778,53 @@ RRDR *rrd2rrdr(
after_requested = tmp;
}
+ *before_requestedp = before_requested;
+ *after_requestedp = after_requested;
+
+ return absolute_period_requested;
+}
+
+static RRDR *rrd2rrdr_fixedstep(
+ RRDSET *st
+ , long points_requested
+ , long long after_requested
+ , long long before_requested
+ , RRDR_GROUPING group_method
+ , long resampling_time_requested
+ , RRDR_OPTIONS options
+ , const char *dimensions
+ , int update_every
+ , time_t first_entry_t
+ , time_t last_entry_t
+ , int absolute_period_requested
+) {
+ int aligned = !(options & RRDR_OPTION_NOT_ALIGNED);
+
+ if(!absolute_period_requested) {
+ if(before_requested % update_every) {
+ // make sure it is multiple of update_every
+ if(before_requested > 0)
+ before_requested = before_requested - update_every + before_requested % update_every;
+ #ifdef NETDATA_INTERNAL_CHECKS
+ else
+ error("INTERNAL ERROR: rrd2rrdr() on %s, negative or zero before_requested", st->name);
+ #endif
+ }
+ if(after_requested % update_every) {
+ // make sure it is multiple of update_every
+ if(after_requested < 0)
+ after_requested = after_requested - update_every + after_requested % update_every;
+ #ifdef NETDATA_INTERNAL_CHECKS
+ else
+ error("INTERNAL ERROR: rrd2rrdr() on %s, negative or zero after_requested", st->name);
+ #endif
+ }
+ if(after_requested == before_requested) after_requested -= update_every;
+ }
+
// the duration of the chart
time_t duration = before_requested - after_requested;
- long available_points = duration / st->update_every;
+ long available_points = duration / update_every;
if(duration <= 0 || available_points <= 0)
return rrdr_create(st, 1);
@@ -674,7 +842,7 @@ RRDR *rrd2rrdr(
// resampling_time_requested enforces a certain grouping multiple
calculated_number resampling_divisor = 1.0;
long resampling_group = 1;
- if(unlikely(resampling_time_requested > st->update_every)) {
+ if(unlikely(resampling_time_requested > update_every)) {
if (unlikely(resampling_time_requested > duration)) {
// group_time is above the available duration
@@ -684,7 +852,7 @@ RRDR *rrd2rrdr(
after_requested = before_requested - resampling_time_requested;
duration = before_requested - after_requested;
- available_points = duration / st->update_every;
+ available_points = duration / update_every;
group = available_points / points_requested;
}
@@ -696,16 +864,16 @@ RRDR *rrd2rrdr(
if(delta > resampling_time_requested / 10) {
after_requested -= resampling_time_requested - delta;
duration = before_requested - after_requested;
- available_points = duration / st->update_every;
+ available_points = duration / update_every;
group = available_points / points_requested;
}
}
// the points we should group to satisfy gtime
- resampling_group = resampling_time_requested / st->update_every;
- if(unlikely(resampling_time_requested % st->update_every)) {
+ resampling_group = resampling_time_requested / update_every;
+ if(unlikely(resampling_time_requested % update_every)) {
#ifdef NETDATA_INTERNAL_CHECKS
- info("INTERNAL CHECK: %s: requested gtime %ld secs, is not a multiple of the chart's data collection frequency %d secs", st->id, resampling_time_requested, st->update_every);
+ info("INTERNAL CHECK: %s: requested gtime %ld secs, is not a multiple of the chart's data collection frequency %d secs", st->id, resampling_time_requested, update_every);
#endif
resampling_group++;
@@ -716,7 +884,7 @@ RRDR *rrd2rrdr(
if(unlikely(group % resampling_group)) group += resampling_group - (group % resampling_group); // make sure group is multiple of resampling_group
//resampling_divisor = group / resampling_group;
- resampling_divisor = (calculated_number)(group * st->update_every) / (calculated_number)resampling_time_requested;
+ resampling_divisor = (calculated_number)(group * update_every) / (calculated_number)resampling_time_requested;
}
// now that we have group,
@@ -724,8 +892,8 @@ RRDR *rrd2rrdr(
if(aligned) {
// alignement has been requested, so align the values
- before_requested -= (before_requested % group);
- after_requested -= (after_requested % group);
+ before_requested -= before_requested % (group * update_every);
+ after_requested -= after_requested % (group * update_every);
}
// we align the request on requested_before
@@ -735,28 +903,28 @@ RRDR *rrd2rrdr(
error("INTERNAL ERROR: rrd2rrdr() on %s, before_wanted is after db max", st->name);
#endif
- before_wanted = last_entry_t - (last_entry_t % ( ((aligned)?group:1) * st->update_every ));
+ before_wanted = last_entry_t - (last_entry_t % ( ((aligned)?group:1) * update_every ));
}
//size_t before_slot = rrdset_time2slot(st, before_wanted);
// we need to estimate the number of points, for having
// an integer number of values per point
- long points_wanted = (before_wanted - after_requested) / (st->update_every * group);
+ long points_wanted = (before_wanted - after_requested) / (update_every * group);
- time_t after_wanted = before_wanted - (points_wanted * group * st->update_every) + st->update_every;
+ time_t after_wanted = before_wanted - (points_wanted * group * update_every) + update_every;
if(unlikely(after_wanted < first_entry_t)) {
// hm... we go to the past, calculate again points_wanted using all the db from before_wanted to the beginning
points_wanted = (before_wanted - first_entry_t) / group;
// recalculate after wanted with the new number of points
- after_wanted = before_wanted - (points_wanted * group * st->update_every) + st->update_every;
+ after_wanted = before_wanted - (points_wanted * group * update_every) + update_every;
if(unlikely(after_wanted < first_entry_t)) {
#ifdef NETDATA_INTERNAL_CHECKS
error("INTERNAL ERROR: rrd2rrdr() on %s, after_wanted is before db min", st->name);
#endif
- after_wanted = first_entry_t - (first_entry_t % ( ((aligned)?group:1) * st->update_every )) + ( ((aligned)?group:1) * st->update_every );
+ after_wanted = first_entry_t - (first_entry_t % ( ((aligned)?group:1) * update_every )) + ( ((aligned)?group:1) * update_every );
}
}
//size_t after_slot = rrdset_time2slot(st, after_wanted);
@@ -772,7 +940,7 @@ RRDR *rrd2rrdr(
}
// recalculate points_wanted using the final time-frame
- points_wanted = (before_wanted - after_wanted) / st->update_every / group + 1;
+ points_wanted = (before_wanted - after_wanted) / update_every / group + 1;
if(unlikely(points_wanted < 0)) {
#ifdef NETDATA_INTERNAL_CHECKS
error("INTERNAL ERROR: rrd2rrdr() on %s, points_wanted is %ld", st->name, points_wanted);
@@ -803,8 +971,8 @@ RRDR *rrd2rrdr(
error("INTERNAL CHECK: after_slot is invalid %zu, expected 0 to %ld", after_slot, st->entries - 1);
*/
- if(points_wanted > (before_wanted - after_wanted) / group / st->update_every + 1)
- error("INTERNAL CHECK: points_wanted %ld is more than points %ld", points_wanted, (before_wanted - after_wanted) / group / st->update_every + 1);
+ if(points_wanted > (before_wanted - after_wanted) / group / update_every + 1)
+ error("INTERNAL CHECK: points_wanted %ld is more than points %ld", points_wanted, (before_wanted - after_wanted) / group / update_every + 1);
if(group < resampling_group)
error("INTERNAL CHECK: group %ld is less than the desired group points %ld", group, resampling_group);
@@ -844,7 +1012,7 @@ RRDR *rrd2rrdr(
// initialize RRDR
r->group = group;
- r->update_every = (int)group * st->update_every;
+ r->update_every = (int)group * update_every;
r->before = before_wanted;
r->after = after_wanted;
r->internal.points_wanted = points_wanted;
@@ -913,7 +1081,7 @@ RRDR *rrd2rrdr(
// reset the grouping for the new dimension
r->internal.grouping_reset(r);
- do_dimension(
+ do_dimension_fixedstep(
r
, points_wanted
, rd
@@ -961,30 +1129,426 @@ RRDR *rrd2rrdr(
}
#ifdef NETDATA_INTERNAL_CHECKS
+ if (dimensions_used) {
+ if(r->internal.log)
+ rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ r->internal.log);
+
+ if(r->rows != points_wanted)
+ rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "got 'points' is not wanted 'points'");
+
+ if(aligned && (r->before % group) != 0)
+ rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "'before' is not aligned but alignment is required");
+
+ // 'after' should not be aligned, since we start inside the first group
+ //if(aligned && (r->after % group) != 0)
+ // rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, after_slot, before_slot, "'after' is not aligned but alignment is required");
+
+ if(r->before != before_requested)
+ rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "chart is not aligned to requested 'before'");
+
+ if(r->before != before_wanted)
+ rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "got 'before' is not wanted 'before'");
+
+ // reported 'after' varies, depending on group
+ if(r->after != after_wanted)
+ rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "got 'after' is not wanted 'after'");
+ }
+ #endif
+
+ // free all resources used by the grouping method
+ r->internal.grouping_free(r);
+
+ // when all the dimensions are zero, we should return all of them
+ if(unlikely(options & RRDR_OPTION_NONZERO && !dimensions_nonzero)) {
+ // all the dimensions are zero
+ // mark them as NONZERO to send them all
+ for(rd = st->dimensions, c = 0 ; rd && c < dimensions_count ; rd = rd->next, c++) {
+ if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
+ r->od[c] |= RRDR_DIMENSION_NONZERO;
+ }
+ }
+
+ rrdr_query_completed(r->internal.db_points_read, r->internal.result_points_generated);
+ return r;
+}
+
+#ifdef ENABLE_DBENGINE
+static RRDR *rrd2rrdr_variablestep(
+ RRDSET *st
+ , long points_requested
+ , long long after_requested
+ , long long before_requested
+ , RRDR_GROUPING group_method
+ , long resampling_time_requested
+ , RRDR_OPTIONS options
+ , const char *dimensions
+ , int update_every
+ , time_t first_entry_t
+ , time_t last_entry_t
+ , int absolute_period_requested
+ , struct rrdeng_region_info *region_info_array
+) {
+ int aligned = !(options & RRDR_OPTION_NOT_ALIGNED);
+
+ if(!absolute_period_requested) {
+ if(before_requested % update_every) {
+ // make sure it is multiple of update_every
+ if(before_requested > 0)
+ before_requested = before_requested - before_requested % update_every;
+ #ifdef NETDATA_INTERNAL_CHECKS
+ else
+ error("INTERNAL ERROR: rrd2rrdr() on %s, negative or zero before_requested", st->name);
+ #endif
+ }
+ if(after_requested % update_every) {
+ // make sure it is multiple of update_every
+ if(after_requested < 0)
+ after_requested = after_requested - after_requested % update_every;
+ #ifdef NETDATA_INTERNAL_CHECKS
+ else
+ error("INTERNAL ERROR: rrd2rrdr() on %s, negative or zero after_requested", st->name);
+ #endif
+ }
+ if(after_requested == before_requested) after_requested -= update_every;
+ }
+
+ // the duration of the chart
+ time_t duration = before_requested - after_requested;
+ long available_points = duration / update_every;
+
+ if(duration <= 0 || available_points <= 0) {
+ freez(region_info_array);
+ return rrdr_create(st, 1);
+ }
+
+ // check the number of wanted points in the result
+ if(unlikely(points_requested < 0)) points_requested = -points_requested;
+ if(unlikely(points_requested > available_points)) points_requested = available_points;
+ if(unlikely(points_requested == 0)) points_requested = available_points;
+
+ // calculate the desired grouping of source data points
+ long group = available_points / points_requested;
+ if(unlikely(group <= 0)) group = 1;
+ if(unlikely(available_points % points_requested > points_requested / 2)) group++; // rounding to the closest integer
+
+ // resampling_time_requested enforces a certain grouping multiple
+ calculated_number resampling_divisor = 1.0;
+ long resampling_group = 1;
+ if(unlikely(resampling_time_requested > update_every)) {
+ if (unlikely(resampling_time_requested > duration)) {
+ // group_time is above the available duration
+
+ #ifdef NETDATA_INTERNAL_CHECKS
+ info("INTERNAL CHECK: %s: requested gtime %ld secs, is greater than the desired duration %ld secs", st->id, resampling_time_requested, duration);
+ #endif
+
+ after_requested = before_requested - resampling_time_requested;
+ duration = before_requested - after_requested;
+ available_points = duration / update_every;
+ group = available_points / points_requested;
+ }
+
+ // if the duration is not aligned to resampling time
+ // extend the duration to the past, to avoid a gap at the chart
+ // only when the missing duration is above 1/10th of a point
+ if(duration % resampling_time_requested) {
+ time_t delta = duration % resampling_time_requested;
+ if(delta > resampling_time_requested / 10) {
+ after_requested -= resampling_time_requested - delta;
+ duration = before_requested - after_requested;
+ available_points = duration / update_every;
+ group = available_points / points_requested;
+ }
+ }
+
+ // the points we should group to satisfy gtime
+ resampling_group = resampling_time_requested / update_every;
+ if(unlikely(resampling_time_requested % update_every)) {
+ #ifdef NETDATA_INTERNAL_CHECKS
+ info("INTERNAL CHECK: %s: requested gtime %ld secs, is not a multiple of the chart's data collection frequency %d secs", st->id, resampling_time_requested, update_every);
+ #endif
+
+ resampling_group++;
+ }
+
+ // adapt group according to resampling_group
+ if(unlikely(group < resampling_group)) group = resampling_group; // do not allow grouping below the desired one
+ if(unlikely(group % resampling_group)) group += resampling_group - (group % resampling_group); // make sure group is multiple of resampling_group
+
+ //resampling_divisor = group / resampling_group;
+ resampling_divisor = (calculated_number)(group * update_every) / (calculated_number)resampling_time_requested;
+ }
+
+ // now that we have group,
+ // align the requested timeframe to fit it.
+
+ if(aligned) {
+ // alignement has been requested, so align the values
+ before_requested -= before_requested % (group * update_every);
+ after_requested -= after_requested % (group * update_every);
+ }
+
+ // we align the request on requested_before
+ time_t before_wanted = before_requested;
+ if(likely(before_wanted > last_entry_t)) {
+ #ifdef NETDATA_INTERNAL_CHECKS
+ error("INTERNAL ERROR: rrd2rrdr() on %s, before_wanted is after db max", st->name);
+ #endif
+
+ before_wanted = last_entry_t - (last_entry_t % ( ((aligned)?group:1) * update_every ));
+ }
+ //size_t before_slot = rrdset_time2slot(st, before_wanted);
+
+ // we need to estimate the number of points, for having
+ // an integer number of values per point
+ long points_wanted = (before_wanted - after_requested) / (update_every * group);
+
+ time_t after_wanted = before_wanted - (points_wanted * group * update_every) + update_every;
+ if(unlikely(after_wanted < first_entry_t)) {
+ // hm... we go to the past, calculate again points_wanted using all the db from before_wanted to the beginning
+ points_wanted = (before_wanted - first_entry_t) / group;
+
+ // recalculate after wanted with the new number of points
+ after_wanted = before_wanted - (points_wanted * group * update_every) + update_every;
+
+ if(unlikely(after_wanted < first_entry_t)) {
+ #ifdef NETDATA_INTERNAL_CHECKS
+ error("INTERNAL ERROR: rrd2rrdr() on %s, after_wanted is before db min", st->name);
+ #endif
+
+ after_wanted = first_entry_t - (first_entry_t % ( ((aligned)?group:1) * update_every )) + ( ((aligned)?group:1) * update_every );
+ }
+ }
+ //size_t after_slot = rrdset_time2slot(st, after_wanted);
+
+ // check if they are reversed
+ if(unlikely(after_wanted > before_wanted)) {
+ #ifdef NETDATA_INTERNAL_CHECKS
+ error("INTERNAL ERROR: rrd2rrdr() on %s, reversed wanted after/before", st->name);
+ #endif
+ time_t tmp = before_wanted;
+ before_wanted = after_wanted;
+ after_wanted = tmp;
+ }
- if(r->internal.log)
- rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ r->internal.log);
+ // recalculate points_wanted using the final time-frame
+ points_wanted = (before_wanted - after_wanted) / update_every / group + 1;
+ if(unlikely(points_wanted < 0)) {
+ #ifdef NETDATA_INTERNAL_CHECKS
+ error("INTERNAL ERROR: rrd2rrdr() on %s, points_wanted is %ld", st->name, points_wanted);
+ #endif
+ points_wanted = 0;
+ }
+
+#ifdef NETDATA_INTERNAL_CHECKS
+ duration = before_wanted - after_wanted;
- if(r->rows != points_wanted)
- rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "got 'points' is not wanted 'points'");
+ if(after_wanted < first_entry_t)
+ error("INTERNAL CHECK: after_wanted %u is too small, minimum %u", (uint32_t)after_wanted, (uint32_t)first_entry_t);
- if(aligned && (r->before % group) != 0)
- rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "'before' is not aligned but alignment is required");
+ if(after_wanted > last_entry_t)
+ error("INTERNAL CHECK: after_wanted %u is too big, maximum %u", (uint32_t)after_wanted, (uint32_t)last_entry_t);
- // 'after' should not be aligned, since we start inside the first group
- //if(aligned && (r->after % group) != 0)
- // rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, after_slot, before_slot, "'after' is not aligned but alignment is required");
+ if(before_wanted < first_entry_t)
+ error("INTERNAL CHECK: before_wanted %u is too small, minimum %u", (uint32_t)before_wanted, (uint32_t)first_entry_t);
- if(r->before != before_requested)
- rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "chart is not aligned to requested 'before'");
+ if(before_wanted > last_entry_t)
+ error("INTERNAL CHECK: before_wanted %u is too big, maximum %u", (uint32_t)before_wanted, (uint32_t)last_entry_t);
- if(r->before != before_wanted)
- rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "got 'before' is not wanted 'before'");
+/*
+ if(before_slot >= (size_t)st->entries)
+ error("INTERNAL CHECK: before_slot is invalid %zu, expected 0 to %ld", before_slot, st->entries - 1);
- // reported 'after' varies, depending on group
- if(r->after != after_wanted)
- rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "got 'after' is not wanted 'after'");
+ if(after_slot >= (size_t)st->entries)
+ error("INTERNAL CHECK: after_slot is invalid %zu, expected 0 to %ld", after_slot, st->entries - 1);
+*/
+ if(points_wanted > (before_wanted - after_wanted) / group / update_every + 1)
+ error("INTERNAL CHECK: points_wanted %ld is more than points %ld", points_wanted, (before_wanted - after_wanted) / group / update_every + 1);
+
+ if(group < resampling_group)
+ error("INTERNAL CHECK: group %ld is less than the desired group points %ld", group, resampling_group);
+
+ if(group > resampling_group && group % resampling_group)
+ error("INTERNAL CHECK: group %ld is not a multiple of the desired group points %ld", group, resampling_group);
+#endif
+
+ // -------------------------------------------------------------------------
+ // initialize our result set
+ // this also locks the chart for us
+
+ RRDR *r = rrdr_create(st, points_wanted);
+ if(unlikely(!r)) {
+ #ifdef NETDATA_INTERNAL_CHECKS
+ error("INTERNAL CHECK: Cannot create RRDR for %s, after=%u, before=%u, duration=%u, points=%ld", st->id, (uint32_t)after_wanted, (uint32_t)before_wanted, (uint32_t)duration, points_wanted);
+ #endif
+ freez(region_info_array);
+ return NULL;
+ }
+
+ if(unlikely(!r->d || !points_wanted)) {
+ #ifdef NETDATA_INTERNAL_CHECKS
+ error("INTERNAL CHECK: Returning empty RRDR (no dimensions in RRDSET) for %s, after=%u, before=%u, duration=%zu, points=%ld", st->id, (uint32_t)after_wanted, (uint32_t)before_wanted, (size_t)duration, points_wanted);
+ #endif
+ freez(region_info_array);
+ return r;
+ }
+
+ r->result_options |= RRDR_RESULT_OPTION_VARIABLE_STEP;
+ if(unlikely(absolute_period_requested == 1))
+ r->result_options |= RRDR_RESULT_OPTION_ABSOLUTE;
+ else
+ r->result_options |= RRDR_RESULT_OPTION_RELATIVE;
+
+ // find how many dimensions we have
+ long dimensions_count = r->d;
+
+ // -------------------------------------------------------------------------
+ // initialize RRDR
+
+ r->group = group;
+ r->update_every = (int)group * update_every;
+ r->before = before_wanted;
+ r->after = after_wanted;
+ r->internal.points_wanted = points_wanted;
+ r->internal.resampling_group = resampling_group;
+ r->internal.resampling_divisor = resampling_divisor;
+
+
+ // -------------------------------------------------------------------------
+ // assign the processor functions
+
+ {
+ int i, found = 0;
+ for(i = 0; !found && api_v1_data_groups[i].name ;i++) {
+ if(api_v1_data_groups[i].value == group_method) {
+ r->internal.grouping_create= api_v1_data_groups[i].create;
+ r->internal.grouping_reset = api_v1_data_groups[i].reset;
+ r->internal.grouping_free = api_v1_data_groups[i].free;
+ r->internal.grouping_add = api_v1_data_groups[i].add;
+ r->internal.grouping_flush = api_v1_data_groups[i].flush;
+ found = 1;
+ }
+ }
+ if(!found) {
+ errno = 0;
+ #ifdef NETDATA_INTERNAL_CHECKS
+ error("INTERNAL ERROR: grouping method %u not found for chart '%s'. Using 'average'", (unsigned int)group_method, r->st->name);
+ #endif
+ r->internal.grouping_create= grouping_create_average;
+ r->internal.grouping_reset = grouping_reset_average;
+ r->internal.grouping_free = grouping_free_average;
+ r->internal.grouping_add = grouping_add_average;
+ r->internal.grouping_flush = grouping_flush_average;
+ }
+ }
+
+ // allocate any memory required by the grouping method
+ r->internal.grouping_data = r->internal.grouping_create(r);
+
+
+ // -------------------------------------------------------------------------
+ // disable the not-wanted dimensions
+
+ rrdset_check_rdlock(st);
+
+ if(dimensions)
+ rrdr_disable_not_selected_dimensions(r, options, dimensions);
+
+
+ // -------------------------------------------------------------------------
+ // do the work for each dimension
+
+ time_t max_after = 0, min_before = 0;
+ long max_rows = 0;
+
+ RRDDIM *rd;
+ long c, dimensions_used = 0, dimensions_nonzero = 0;
+ for(rd = st->dimensions, c = 0 ; rd && c < dimensions_count ; rd = rd->next, c++) {
+
+ // if we need a percentage, we need to calculate all dimensions
+ if(unlikely(!(options & RRDR_OPTION_PERCENTAGE) && (r->od[c] & RRDR_DIMENSION_HIDDEN))) {
+ if(unlikely(r->od[c] & RRDR_DIMENSION_SELECTED)) r->od[c] &= ~RRDR_DIMENSION_SELECTED;
+ continue;
+ }
+ r->od[c] |= RRDR_DIMENSION_SELECTED;
+
+ // reset the grouping for the new dimension
+ r->internal.grouping_reset(r);
+
+ do_dimension_variablestep(
+ r
+ , points_wanted
+ , rd
+ , c
+ , after_wanted
+ , before_wanted
+ );
+
+ if(r->od[c] & RRDR_DIMENSION_NONZERO)
+ dimensions_nonzero++;
+
+ // verify all dimensions are aligned
+ if(unlikely(!dimensions_used)) {
+ min_before = r->before;
+ max_after = r->after;
+ max_rows = r->rows;
+ }
+ else {
+ if(r->after != max_after) {
+ #ifdef NETDATA_INTERNAL_CHECKS
+ error("INTERNAL ERROR: 'after' mismatch between dimensions for chart '%s': max is %zu, dimension '%s' has %zu",
+ st->name, (size_t)max_after, rd->name, (size_t)r->after);
+ #endif
+ r->after = (r->after > max_after) ? r->after : max_after;
+ }
+
+ if(r->before != min_before) {
+ #ifdef NETDATA_INTERNAL_CHECKS
+ error("INTERNAL ERROR: 'before' mismatch between dimensions for chart '%s': max is %zu, dimension '%s' has %zu",
+ st->name, (size_t)min_before, rd->name, (size_t)r->before);
+ #endif
+ r->before = (r->before < min_before) ? r->before : min_before;
+ }
+
+ if(r->rows != max_rows) {
+ #ifdef NETDATA_INTERNAL_CHECKS
+ error("INTERNAL ERROR: 'rows' mismatch between dimensions for chart '%s': max is %zu, dimension '%s' has %zu",
+ st->name, (size_t)max_rows, rd->name, (size_t)r->rows);
+ #endif
+ r->rows = (r->rows > max_rows) ? r->rows : max_rows;
+ }
+ }
+
+ dimensions_used++;
+ }
+
+ #ifdef NETDATA_INTERNAL_CHECKS
+
+ if (dimensions_used) {
+ if(r->internal.log)
+ rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ r->internal.log);
+
+ if(r->rows != points_wanted)
+ rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "got 'points' is not wanted 'points'");
+
+ if(aligned && (r->before % group) != 0)
+ rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "'before' is not aligned but alignment is required");
+
+ // 'after' should not be aligned, since we start inside the first group
+ //if(aligned && (r->after % group) != 0)
+ // rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, after_slot, before_slot, "'after' is not aligned but alignment is required");
+
+ if(r->before != before_requested)
+ rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "chart is not aligned to requested 'before'");
+
+ if(r->before != before_wanted)
+ rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "got 'before' is not wanted 'before'");
+
+ // reported 'after' varies, depending on group
+ if(r->after != after_wanted)
+ rrd2rrdr_log_request_response_metdata(r, group_method, aligned, group, resampling_time_requested, resampling_group, after_wanted, after_requested, before_wanted, before_requested, points_requested, points_wanted, /*after_slot, before_slot,*/ "got 'after' is not wanted 'after'");
+ }
#endif
// free all resources used by the grouping method
@@ -1001,5 +1565,57 @@ RRDR *rrd2rrdr(
}
rrdr_query_completed(r->internal.db_points_read, r->internal.result_points_generated);
+ freez(region_info_array);
return r;
}
+#endif //#ifdef ENABLE_DBENGINE
+
+RRDR *rrd2rrdr(
+ RRDSET *st
+ , long points_requested
+ , long long after_requested
+ , long long before_requested
+ , RRDR_GROUPING group_method
+ , long resampling_time_requested
+ , RRDR_OPTIONS options
+ , const char *dimensions
+) {
+ int rrd_update_every;
+ int absolute_period_requested;
+ time_t first_entry_t = rrdset_first_entry_t(st);
+ time_t last_entry_t = rrdset_last_entry_t(st);
+
+ absolute_period_requested = rrdr_convert_before_after_to_absolute(&after_requested, &before_requested,
+ first_entry_t, last_entry_t);
+
+#ifdef ENABLE_DBENGINE
+ if ((st->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE)) {
+ struct rrdeng_region_info *region_info_array;
+ unsigned regions, max_interval;
+
+ /* This call takes the chart read-lock */
+ regions = rrdeng_variable_step_boundaries(st, after_requested, before_requested,
+ &region_info_array, &max_interval);
+ if (1 == regions) {
+ if (region_info_array)
+ rrd_update_every = region_info_array[0].update_every;
+ else
+ rrd_update_every = st->update_every;
+ if (region_info_array)
+ freez(region_info_array);
+ return rrd2rrdr_fixedstep(st, points_requested, after_requested, before_requested, group_method,
+ resampling_time_requested, options, dimensions, rrd_update_every,
+ first_entry_t, last_entry_t, absolute_period_requested);
+ } else {
+ rrd_update_every = (uint16_t)max_interval;
+ return rrd2rrdr_variablestep(st, points_requested, after_requested, before_requested, group_method,
+ resampling_time_requested, options, dimensions, rrd_update_every,
+ first_entry_t, last_entry_t, absolute_period_requested, region_info_array);
+ }
+ }
+#endif
+ rrd_update_every = st->update_every;
+ return rrd2rrdr_fixedstep(st, points_requested, after_requested, before_requested, group_method,
+ resampling_time_requested, options, dimensions,
+ rrd_update_every, first_entry_t, last_entry_t, absolute_period_requested);
+} \ No newline at end of file
diff --git a/web/api/queries/rrdr.h b/web/api/queries/rrdr.h
index 4f635038..6a031adf 100644
--- a/web/api/queries/rrdr.h
+++ b/web/api/queries/rrdr.h
@@ -6,7 +6,7 @@
#include "libnetdata/libnetdata.h"
typedef enum rrdr_options {
- RRDR_OPTION_NONZERO = 0x00000001, // don't output dimensions will just zero values
+ RRDR_OPTION_NONZERO = 0x00000001, // don't output dimensions with just zero values
RRDR_OPTION_REVERSED = 0x00000002, // output the rows in reverse order (oldest to newest)
RRDR_OPTION_ABSOLUTE = 0x00000004, // values positive, for DATASOURCE_SSV before summing
RRDR_OPTION_MIN2MAX = 0x00000008, // when adding dimensions, use max - min, instead of sum
@@ -18,10 +18,11 @@ typedef enum rrdr_options {
RRDR_OPTION_JSON_WRAP = 0x00000200, // wrap the response in a JSON header with info about the result
RRDR_OPTION_LABEL_QUOTES = 0x00000400, // in CSV output, wrap header labels in double quotes
RRDR_OPTION_PERCENTAGE = 0x00000800, // give values as percentage of total
- RRDR_OPTION_NOT_ALIGNED = 0x00001000, // do not align charts for persistant timeframes
+ RRDR_OPTION_NOT_ALIGNED = 0x00001000, // do not align charts for persistent timeframes
RRDR_OPTION_DISPLAY_ABS = 0x00002000, // for badges, display the absolute value, but calculate colors with sign
RRDR_OPTION_MATCH_IDS = 0x00004000, // when filtering dimensions, match only IDs
RRDR_OPTION_MATCH_NAMES = 0x00008000, // when filtering dimensions, match only names
+ RRDR_OPTION_CUSTOM_VARS = 0x00010000, // when wraping response in a JSON, return custom variables in response
} RRDR_OPTIONS;
typedef enum rrdr_value_flag {
@@ -39,8 +40,11 @@ typedef enum rrdr_dimension_flag {
// RRDR result options
typedef enum rrdr_result_flags {
- RRDR_RESULT_OPTION_ABSOLUTE = 0x00000001, // the query uses absolute time-frames (can be cached by browsers and proxies)
- RRDR_RESULT_OPTION_RELATIVE = 0x00000002, // the query uses relative time-frames (should not to be cached by browsers and proxies)
+ RRDR_RESULT_OPTION_ABSOLUTE = 0x00000001, // the query uses absolute time-frames
+ // (can be cached by browsers and proxies)
+ RRDR_RESULT_OPTION_RELATIVE = 0x00000002, // the query uses relative time-frames
+ // (should not to be cached by browsers and proxies)
+ RRDR_RESULT_OPTION_VARIABLE_STEP = 0x00000004, // the query uses variable-step time-frames
} RRDR_RESULT_FLAGS;
typedef struct rrdresult {
diff --git a/web/api/queries/ses/Makefile.in b/web/api/queries/ses/Makefile.in
new file mode 100644
index 00000000..7d425cdc
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diff --git a/web/api/queries/ses/README.md b/web/api/queries/ses/README.md
index 16b153a4..5f21c849 100644
--- a/web/api/queries/ses/README.md
+++ b/web/api/queries/ses/README.md
@@ -43,14 +43,14 @@ It can also be used in APIs and badges as `&group=ses` in the URL.
Examining last 1 minute `successful` web server responses:
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average&value_color=yellow)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=ses&after=-60&label=single+exponential+smoothing&value_color=orange)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average&value_color=yellow)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=ses&after=-60&label=single+exponential+smoothing&value_color=orange)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
## References
-- [https://en.wikipedia.org/wiki/Moving_average#exponential-moving-average](https://en.wikipedia.org/wiki/Moving_average#exponential-moving-average)
-- [https://en.wikipedia.org/wiki/Exponential_smoothing](https://en.wikipedia.org/wiki/Exponential_smoothing).
+- <https://en.wikipedia.org/wiki/Moving_average#exponential-moving-average>
+- <https://en.wikipedia.org/wiki/Exponential_smoothing>.
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fses%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fses%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
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diff --git a/web/api/queries/stddev/README.md b/web/api/queries/stddev/README.md
index 2ef5a2e3..00604154 100644
--- a/web/api/queries/stddev/README.md
+++ b/web/api/queries/stddev/README.md
@@ -1,4 +1,3 @@
-
# standard deviation (`stddev`)
The standard deviation is a measure that is used to quantify the amount of variation or dispersion
@@ -28,14 +27,14 @@ It can also be used in APIs and badges as `&group=stddev` in the URL.
Examining last 1 minute `successful` web server responses:
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=min&after=-60&label=min)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=average&after=-60&label=average&value_color=yellow)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=stddev&after=-60&label=standard+deviation&value_color=orange)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=max&after=-60&label=max)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=average&after=-60&label=average&value_color=yellow)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=stddev&after=-60&label=standard+deviation&value_color=orange)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=max&after=-60&label=max)
## References
-Check [https://en.wikipedia.org/wiki/Standard_deviation](https://en.wikipedia.org/wiki/Standard_deviation).
+Check <https://en.wikipedia.org/wiki/Standard_deviation>.
---
@@ -77,13 +76,13 @@ It can also be used in APIs and badges as `&group=cv` in the URL.
Examining last 1 minute `successful` web server responses:
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=min&after=-60&label=min)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=average&after=-60&label=average&value_color=yellow)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=cv&after=-60&label=coefficient+of+variation&value_color=orange&units=pcent)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=max&after=-60&label=max)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=average&after=-60&label=average&value_color=yellow)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=cv&after=-60&label=coefficient+of+variation&value_color=orange&units=pcent)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&dimensions=success&group=max&after=-60&label=max)
## References
-Check [https://en.wikipedia.org/wiki/Coefficient_of_variation](https://en.wikipedia.org/wiki/Coefficient_of_variation).
+Check <https://en.wikipedia.org/wiki/Coefficient_of_variation>.
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fstddev%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fstddev%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/web/api/queries/sum/Makefile.in b/web/api/queries/sum/Makefile.in
new file mode 100644
index 00000000..afe260a5
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diff --git a/web/api/queries/sum/README.md b/web/api/queries/sum/README.md
index a74ffff6..a7028ca6 100644
--- a/web/api/queries/sum/README.md
+++ b/web/api/queries/sum/README.md
@@ -24,13 +24,13 @@ It can also be used in APIs and badges as `&group=sum` in the URL.
Examining last 1 minute `successful` web server responses:
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
-- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=sum&after=-60&label=1m+sum&value_color=orange&units=requests)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=min&after=-60&label=min)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=average&after=-60&label=average)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=max&after=-60&label=max)
+- ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.response_statuses&options=unaligned&dimensions=success&group=sum&after=-60&label=1m+sum&value_color=orange&units=requests)
## References
-- [https://en.wikipedia.org/wiki/Summation](https://en.wikipedia.org/wiki/Summation).
+- <https://en.wikipedia.org/wiki/Summation>.
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fsum%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fweb%2Fapi%2Fqueries%2Fsum%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)