summaryrefslogtreecommitdiffstats
path: root/collectors/idlejitter.plugin
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2022-01-26 18:05:15 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2022-01-26 18:05:42 +0000
commit112b5b91647c3dea45cc1c9bc364df526c8012f1 (patch)
tree450af925135ec664c4310a1eb28b69481094ee2a /collectors/idlejitter.plugin
parentReleasing debian version 1.32.1-2. (diff)
downloadnetdata-112b5b91647c3dea45cc1c9bc364df526c8012f1.tar.xz
netdata-112b5b91647c3dea45cc1c9bc364df526c8012f1.zip
Merging upstream version 1.33.0.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'collectors/idlejitter.plugin')
-rw-r--r--collectors/idlejitter.plugin/README.md18
-rw-r--r--collectors/idlejitter.plugin/plugin_idlejitter.c2
-rw-r--r--collectors/idlejitter.plugin/plugin_idlejitter.h21
3 files changed, 16 insertions, 25 deletions
diff --git a/collectors/idlejitter.plugin/README.md b/collectors/idlejitter.plugin/README.md
index 3703e2ee2..40436d33c 100644
--- a/collectors/idlejitter.plugin/README.md
+++ b/collectors/idlejitter.plugin/README.md
@@ -5,7 +5,9 @@ custom_edit_url: https://github.com/netdata/netdata/edit/master/collectors/idlej
# idlejitter.plugin
-It works like this:
+Idle jitter is a measure of delays in timing for user processes caused by scheduling limitations.
+
+## How Netdata measures idle jitter
A thread is spawned that requests to sleep for 20000 microseconds (20ms).
When the system wakes it up, it measures how many microseconds have passed.
@@ -14,7 +16,17 @@ This is done at most 50 times per second, to ensure we have a good average.
This number is useful:
-1. in real-time environments, when the CPU jitter can affect the quality of the service (like VoIP media gateways).
-2. in cloud infrastructure, at can pause the VM or container for a small duration to perform operations at the host.
+- In multimedia-streaming environments such as VoIP gateways, where the CPU jitter can affect the quality of the service.
+- On time servers and other systems that require very precise timing, where CPU jitter can actively interfere with timing precision.
+- On gaming systems, where CPU jitter can cause frame drops and stuttering.
+- In cloud infrastructure that can pause the VM or container for a small duration to perform operations at the host.
+
+## Charts
+
+idlejitter.plugin generates the idlejitter chart which measures CPU idle jitter in milliseconds lost per second.
+
+## Configuration
+
+This chart is available without any configuration.
[![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%2Fcollectors%2Fidlejitter.plugin%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/collectors/idlejitter.plugin/plugin_idlejitter.c b/collectors/idlejitter.plugin/plugin_idlejitter.c
index c59541ecb..12ab8601a 100644
--- a/collectors/idlejitter.plugin/plugin_idlejitter.c
+++ b/collectors/idlejitter.plugin/plugin_idlejitter.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-3.0-or-later
-#include "plugin_idlejitter.h"
+#include "daemon/common.h"
#define CPU_IDLEJITTER_SLEEP_TIME_MS 20
diff --git a/collectors/idlejitter.plugin/plugin_idlejitter.h b/collectors/idlejitter.plugin/plugin_idlejitter.h
deleted file mode 100644
index 6da78a085..000000000
--- a/collectors/idlejitter.plugin/plugin_idlejitter.h
+++ /dev/null
@@ -1,21 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#ifndef NETDATA_PLUGIN_IDLEJITTER_H
-#define NETDATA_PLUGIN_IDLEJITTER_H 1
-
-#include "daemon/common.h"
-
-#define NETDATA_PLUGIN_HOOK_IDLEJITTER \
- { \
- .name = "PLUGIN[idlejitter]", \
- .config_section = CONFIG_SECTION_PLUGINS, \
- .config_name = "idlejitter", \
- .enabled = 1, \
- .thread = NULL, \
- .init_routine = NULL, \
- .start_routine = cpuidlejitter_main \
- },
-
-extern void *cpuidlejitter_main(void *ptr);
-
-#endif /* NETDATA_PLUGIN_IDLEJITTER_H */