diff options
Diffstat (limited to 'collectors/proc.plugin')
| -rw-r--r-- | collectors/proc.plugin/Makefile.in | 466 | ||||
| -rw-r--r-- | collectors/proc.plugin/README.md | 106 | ||||
| -rw-r--r-- | collectors/proc.plugin/ipc.c | 335 | ||||
| -rw-r--r-- | collectors/proc.plugin/proc_diskstats.c | 2 | ||||
| -rw-r--r-- | collectors/proc.plugin/proc_stat.c | 2 | ||||
| -rw-r--r-- | collectors/proc.plugin/sys_fs_btrfs.c | 6 |
6 files changed, 836 insertions, 81 deletions
diff --git a/collectors/proc.plugin/Makefile.in b/collectors/proc.plugin/Makefile.in new file mode 100644 index 000000000..31d15d54f --- /dev/null +++ b/collectors/proc.plugin/Makefile.in @@ -0,0 +1,466 @@ +# Makefile.in generated by automake 1.14.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2013 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +# SPDX-License-Identifier: GPL-3.0-or-later + +VPATH = @srcdir@ +am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)' +am__make_running_with_option = \ + case $${target_option-} in \ + ?) ;; 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For traditional disks that execute commands one after another, one of them is being run by the disk and the rest are just waiting in a queue. -- Backlog size (time in ms) +- **Backlog size (time in ms)** The expected duration of the currently queued I/O operations. -- Utilization (time percentage) +- **Utilization (time percentage)** The percentage of time the disk was busy with something. This is a very interesting metric, since for most disks, that execute commands sequentially, **this is the key indication of congestion**. A sequential disk that is 100% of the available time busy, has no time to do anything more, so even if the bandwidth or the number of operations executed by the disk is low, its capacity has been reached. Of course, for newer disk technologies (like fusion cards) that are capable to execute multiple commands in parallel, this metric is just meaningless. -- Average I/O operation time (ms) +- **Average I/O operation time (ms)** The average time for I/O requests issued to the device to be served. This includes the time spent by the requests in queue and the time spent servicing them. -- Average I/O operation size (kb) +- **Average I/O operation size (kb)** The average amount of data of the completed I/O operations. -- Average Service Time (ms) +- **Average Service Time (ms)** The average service time for completed I/O operations. This metric is calculated using the total busy time of the disk and the number of completed operations. If the disk is able to execute multiple parallel operations the reporting average service time will be misleading. -- Merged I/O operations/s +- **Merged I/O operations/s** The Linux kernel is capable of merging I/O operations. So, if two requests to read data from the disk are adjacent, the Linux kernel may merge them to one before giving them to disk. This metric measures the number of operations that have been merged by the Linux kernel. -- Total I/O time +- **Total I/O time** The sum of the duration of all completed I/O operations. This number can exceed the interval if the disk is able to execute multiple I/O operations in parallel. -- Space usage +- **Space usage** For mounted disks, netdata will provide a chart for their space, with 3 dimensions: 1. free 2. used 3. reserved for root -- inode usage +- **inode usage** For mounted disks, netdata will provide a chart for their inodes (number of file and directories), with 3 dimensions: 1. free 2. used @@ -249,6 +250,73 @@ each state. `schedstat filename to monitor`, `cpuidle name filename to monitor`, and `cpuidle time filename to monitor` in the `[plugin:proc:/proc/stat]` configuration section +## Monitoring Network Interfaces + +### Monitored network interface metrics + +- **Physical Network Interfaces Aggregated Bandwidth (kilobits/s)** + The amount of data received and sent through all physical interfaces in the system. This is the source of data for the Net Inbound and Net Outbound dials in the System Overview section. + +- **Bandwidth (kilobits/s)** + The amount of data received and sent through the interface. +- **Packets (packets/s)** + The number of packets received, packets sent, and multicast packets transmitted through the interface. + +- **Interface Errors (errors/s)** + The number of errors for the inbound and outbound traffic on the interface. +- **Interface Drops (drops/s)** + The number of packets dropped for the inbound and outbound traffic on the interface. +- **Interface FIFO Buffer Errors (errors/s)** + The number of FIFO buffer errors encountered while receiving and transmitting data through the interface. +- **Compressed Packets (packets/s)** + The number of compressed packets transmitted or received by the device driver. +- **Network Interface Events (events/s)** + The number of packet framing errors, collisions detected on the interface, and carrier losses detected by the device driver. + +By default netdata will enable monitoring metrics only when they are not zero. If they are constantly zero they are ignored. Metrics that will start having values, after netdata is started, will be detected and charts will be automatically added to the dashboard (a refresh of the dashboard is needed for them to appear though). + +#### alarms + +There are several alarms defined in `health.d/net.conf`. + +The tricky ones are `inbound packets dropped` and `inbound packets dropped ratio`. They have quite a strict policy so that they warn users about possible issues. These alarms can be annoying for some network configurations. It is especially true for some bonding configurations if an interface is a slave or a bonding interface itself. If it is expected to have a certain number of drops on an interface for a certain network configuration, a separate alarm with different triggering thresholds can be created or the existing one can be disabled for this specific interface. It can be done with the help of the [families](../../health/#alarm-line-families) line in the alarm configuration. For example, if you want to disable the `inbound packets dropped` alarm for `eth0`, set `families: !eth0 *` in the alarm definition for `template: inbound_packets_dropped`. + +#### configuration + +Module configuration: + +``` +[plugin:proc:/proc/net/dev] + # filename to monitor = /proc/net/dev + # path to get virtual interfaces = /sys/devices/virtual/net/%s + # path to get net device speed = /sys/class/net/%s/speed + # enable new interfaces detected at runtime = auto + # bandwidth for all interfaces = auto + # packets for all interfaces = auto + # errors for all interfaces = auto + # drops for all interfaces = auto + # fifo for all interfaces = auto + # compressed packets for all interfaces = auto + # frames, collisions, carrier counters for all interfaces = auto + # disable by default interfaces matching = lo fireqos* *-ifb + # refresh interface speed every seconds = 10 +``` + +Per interface configuration: + +``` +[plugin:proc:/proc/net/dev:enp0s3] + # enabled = yes + # virtual = no + # bandwidth = auto + # packets = auto + # errors = auto + # drops = auto + # fifo = auto + # compressed = auto + # events = auto +``` + ## Linux Anti-DDoS  @@ -343,4 +411,18 @@ corresponding `min` or `empty` attribute, then Netdata will still provide the corresponding `min` or `empty`, which will then always read as zero. This way, alerts which match on these will still work. +## IPC + +This module monitors the number of semaphores, semaphore arrays, number of messages in message queues, and amount of memory used by message queues. As far as the message queue charts are dynamic, sane limits are applied for the number of dimensions per chart (the limit is configurable). + +#### configuration + +``` +[plugin:proc:ipc] + # semaphore totals = yes + # message queues = yes + # msg filename to monitor = /proc/sysvipc/msg + # max dimensions in memory allowed = 50 +``` + []() diff --git a/collectors/proc.plugin/ipc.c b/collectors/proc.plugin/ipc.c index 6c6bee519..b16e8b7c8 100644 --- a/collectors/proc.plugin/ipc.c +++ b/collectors/proc.plugin/ipc.c @@ -53,6 +53,18 @@ union semun { }; #endif +struct message_queue { + unsigned long long id; + int found; + + RRDDIM *rd_messages; + RRDDIM *rd_bytes; + unsigned long long messages; + unsigned long long bytes; + + struct message_queue * next; +}; + static inline int ipc_sem_get_limits(struct ipc_limits *lim) { static procfile *ff = NULL; static int error_shown = 0; @@ -162,102 +174,291 @@ static inline int ipc_sem_get_status(struct ipc_status *st) { return 0; } +int ipc_msq_get_info(char *msg_filename, struct message_queue **message_queue_root) { + static procfile *ff; + struct message_queue *msq; + + if(unlikely(!ff)) { + ff = procfile_open(config_get("plugin:proc:ipc", "msg filename to monitor", msg_filename), " \t:", PROCFILE_FLAG_DEFAULT); + if(unlikely(!ff)) return 1; + } + + ff = procfile_readall(ff); + if(unlikely(!ff)) return 1; + + size_t lines = procfile_lines(ff); + size_t words = 0; + + if(unlikely(lines < 2)) { + error("Cannot read %s. Expected 2 or more lines, read %zu.", ff->filename, lines); + return 1; + } + + // loop through all lines except the first and the last ones + size_t l; + for(l = 1; l < lines - 1; l++) { + words = procfile_linewords(ff, l); + if(unlikely(words < 2)) continue; + if(unlikely(words < 14)) { + error("Cannot read %s line. Expected 14 params, read %zu.", ff->filename, words); + continue; + } + + // find the id in the linked list or create a new stucture + int found = 0; + + unsigned long long id = str2ull(procfile_lineword(ff, l, 1)); + for(msq = *message_queue_root; msq ; msq = msq->next) { + if(unlikely(id == msq->id)) { + found = 1; + break; + } + } + + if(unlikely(!found)) { + msq = callocz(1, sizeof(struct message_queue)); + msq->next = *message_queue_root; + *message_queue_root = msq; + msq->id = id; + } + + msq->messages = str2ull(procfile_lineword(ff, l, 4)); + msq->bytes = str2ull(procfile_lineword(ff, l, 3)); + msq->found = 1; + } + + return 0; +} + int do_ipc(int update_every, usec_t dt) { (void)dt; - static int initialized = 0, read_limits_next = -1; + static int do_sem = -1, do_msg = -1; + static int read_limits_next = -1; static struct ipc_limits limits; static struct ipc_status status; static RRDVAR *arrays_max = NULL, *semaphores_max = NULL; static RRDSET *st_semaphores = NULL, *st_arrays = NULL; static RRDDIM *rd_semaphores = NULL, *rd_arrays = NULL; + static char *msg_filename = NULL; + static struct message_queue *message_queue_root = NULL; + static long long dimensions_limit; + + if(unlikely(do_sem == -1)) { + do_sem = config_get_boolean("plugin:proc:ipc", "semaphore totals", CONFIG_BOOLEAN_YES); + do_msg = config_get_boolean("plugin:proc:ipc", "message queues", CONFIG_BOOLEAN_YES); + + char filename[FILENAME_MAX + 1]; + snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/sysvipc/msg"); + msg_filename = config_get("plugin:proc:ipc", "msg filename to monitor", filename); + + dimensions_limit = config_get_number("plugin:proc:ipc", "max dimensions in memory allowed", 50); - if(unlikely(!initialized)) { - initialized = 1; - // make sure it works if(ipc_sem_get_limits(&limits) == -1) { error("unable to fetch semaphore limits"); - return 1; + do_sem = CONFIG_BOOLEAN_NO; } - - // make sure it works - if(ipc_sem_get_status(&status) == -1) { + else if(ipc_sem_get_status(&status) == -1) { error("unable to fetch semaphore statistics"); - return 1; + do_sem = CONFIG_BOOLEAN_NO; } + else { + // create the charts + if(unlikely(!st_semaphores)) { + st_semaphores = rrdset_create_localhost( + "system" + , "ipc_semaphores" + , NULL + , "ipc semaphores" + , NULL + , "IPC Semaphores" + , "semaphores" + , PLUGIN_PROC_NAME + , "ipc" + , NETDATA_CHART_PRIO_SYSTEM_IPC_SEMAPHORES + , localhost->rrd_update_every + , RRDSET_TYPE_AREA + ); + rd_semaphores = rrddim_add(st_semaphores, "semaphores", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + } + + if(unlikely(!st_arrays)) { + st_arrays = rrdset_create_localhost( + "system" + , "ipc_semaphore_arrays" + , NULL + , "ipc semaphores" + , NULL + , "IPC Semaphore Arrays" + , "arrays" + , PLUGIN_PROC_NAME + , "ipc" + , NETDATA_CHART_PRIO_SYSTEM_IPC_SEM_ARRAYS + , localhost->rrd_update_every + , RRDSET_TYPE_AREA + ); + rd_arrays = rrddim_add(st_arrays, "arrays", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + } - // create the charts - if(unlikely(!st_semaphores)) { - st_semaphores = rrdset_create_localhost( - "system" - , "ipc_semaphores" - , NULL - , "ipc semaphores" - , NULL - , "IPC Semaphores" - , "semaphores" - , PLUGIN_PROC_NAME - , "ipc" - , NETDATA_CHART_PRIO_SYSTEM_IPC_SEMAPHORES - , localhost->rrd_update_every - , RRDSET_TYPE_AREA - ); - rd_semaphores = rrddim_add(st_semaphores, "semaphores", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + // variables + semaphores_max = rrdvar_custom_host_variable_create(localhost, "ipc_semaphores_max"); + arrays_max = rrdvar_custom_host_variable_create(localhost, "ipc_semaphores_arrays_max"); } - if(unlikely(!st_arrays)) { - st_arrays = rrdset_create_localhost( - "system" - , "ipc_semaphore_arrays" - , NULL - , "ipc semaphores" - , NULL - , "IPC Semaphore Arrays" - , "arrays" - , PLUGIN_PROC_NAME - , "ipc" - , NETDATA_CHART_PRIO_SYSTEM_IPC_SEM_ARRAYS - , localhost->rrd_update_every - , RRDSET_TYPE_AREA - ); - rd_arrays = rrddim_add(st_arrays, "arrays", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + struct stat stbuf; + if (stat(msg_filename, &stbuf)) { + do_msg = CONFIG_BOOLEAN_NO; } - // variables - semaphores_max = rrdvar_custom_host_variable_create(localhost, "ipc_semaphores_max"); - arrays_max = rrdvar_custom_host_variable_create(localhost, "ipc_semaphores_arrays_max"); + if(unlikely(do_sem == CONFIG_BOOLEAN_NO && do_msg == CONFIG_BOOLEAN_NO)) { + error("ipc module disabled"); + return 1; + } } - if(unlikely(read_limits_next < 0)) { - if(unlikely(ipc_sem_get_limits(&limits) == -1)) { - error("Unable to fetch semaphore limits."); - } - else { - if(semaphores_max) rrdvar_custom_host_variable_set(localhost, semaphores_max, limits.semmns); - if(arrays_max) rrdvar_custom_host_variable_set(localhost, arrays_max, limits.semmni); + if(likely(do_sem != CONFIG_BOOLEAN_NO)) { + if(unlikely(read_limits_next < 0)) { + if(unlikely(ipc_sem_get_limits(&limits) == -1)) { + error("Unable to fetch semaphore limits."); + } + else { + if(semaphores_max) rrdvar_custom_host_variable_set(localhost, semaphores_max, limits.semmns); + if(arrays_max) rrdvar_custom_host_variable_set(localhost, arrays_max, limits.semmni); - st_arrays->red = limits.semmni; - st_semaphores->red = limits.semmns; + st_arrays->red = limits.semmni; + st_semaphores->red = limits.semmns; - read_limits_next = 60 / update_every; + read_limits_next = 60 / update_every; + } } - } - else - read_limits_next--; + else + read_limits_next--; - if(unlikely(ipc_sem_get_status(&status) == -1)) { - error("Unable to get semaphore statistics"); - return 0; + if(unlikely(ipc_sem_get_status(&status) == -1)) { + error("Unable to get semaphore statistics"); + return 0; + } + + if(st_semaphores->counter_done) rrdset_next(st_semaphores); + rrddim_set_by_pointer(st_semaphores, rd_semaphores, status.semaem); + rrdset_done(st_semaphores); + + if(st_arrays->counter_done) rrdset_next(st_arrays); + rrddim_set_by_pointer(st_arrays, rd_arrays, status.semusz); + rrdset_done(st_arrays); } - if(st_semaphores->counter_done) rrdset_next(st_semaphores); - rrddim_set_by_pointer(st_semaphores, rd_semaphores, status.semaem); - rrdset_done(st_semaphores); + // -------------------------------------------------------------------- + + if(likely(do_msg != CONFIG_BOOLEAN_NO)) { + static RRDSET *st_msq_messages = NULL, *st_msq_bytes = NULL; + + int ret = ipc_msq_get_info(msg_filename, &message_queue_root); + + if(!ret && message_queue_root) { + if(unlikely(!st_msq_messages)) + st_msq_messages = rrdset_create_localhost( + "system" + , "message_queue_messages" + , NULL + , "ipc message queues" + , NULL + , "IPC Message Queue Number of Messages" + , "messages" + , PLUGIN_PROC_NAME + , "ipc" + , NETDATA_CHART_PRIO_SYSTEM_IPC_MSQ_MESSAGES + , update_every + , RRDSET_TYPE_STACKED + ); + else + rrdset_next(st_msq_messages); + + if(unlikely(!st_msq_bytes)) + st_msq_bytes = rrdset_create_localhost( + "system" + , "message_queue_bytes" + , NULL + , "ipc message queues" + , NULL + , "IPC Message Queue Used Bytes" + , "bytes" + , PLUGIN_PROC_NAME + , "ipc" + , NETDATA_CHART_PRIO_SYSTEM_IPC_MSQ_SIZE + , update_every + , RRDSET_TYPE_STACKED + ); + else + rrdset_next(st_msq_bytes); + + struct message_queue *msq = message_queue_root, *msq_prev = NULL; + while(likely(msq)){ + if(likely(msq->found)) { + if(unlikely(!msq->rd_messages || !msq->rd_bytes)) { + char id[RRD_ID_LENGTH_MAX + 1]; + snprintfz(id, RRD_ID_LENGTH_MAX, "%llu", msq->id); + if(likely(!msq->rd_messages)) msq->rd_messages = rrddim_add(st_msq_messages, id, NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + if(likely(!msq->rd_bytes)) msq->rd_bytes = rrddim_add(st_msq_bytes, id, NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + } + + rrddim_set_by_pointer(st_msq_messages, msq->rd_messages, msq->messages); + rrddim_set_by_pointer(st_msq_bytes, msq->rd_bytes, msq->bytes); + + msq->found = 0; + } + else { + rrddim_is_obsolete(st_msq_messages, msq->rd_messages); + rrddim_is_obsolete(st_msq_bytes, msq->rd_bytes); + + // remove message queue from the linked list + if(!msq_prev) + message_queue_root = msq->next; + else + msq_prev->next = msq->next; + freez(msq); + msq = NULL; + } + if(likely(msq)) { + msq_prev = msq; + msq = msq->next; + } + else if(!msq_prev) + msq = message_queue_root; + else + msq = msq_prev->next; + } - if(st_arrays->counter_done) rrdset_next(st_arrays); - rrddim_set_by_pointer(st_arrays, rd_arrays, status.semusz); - rrdset_done(st_arrays); + rrdset_done(st_msq_messages); + rrdset_done(st_msq_bytes); + + long long dimensions_num = 0; + RRDDIM *rd; + rrdset_rdlock(st_msq_messages); + rrddim_foreach_read(rd, st_msq_messages) dimensions_num++; + rrdset_unlock(st_msq_messages); + + if(unlikely(dimensions_num > dimensions_limit)) { + info("Message queue statistics has been disabled"); + info("There are %lld dimensions in memory but limit was set to %lld", dimensions_num, dimensions_limit); + rrdset_is_obsolete(st_msq_messages); + rrdset_is_obsolete(st_msq_bytes); + st_msq_messages = NULL; + st_msq_bytes = NULL; + do_msg = CONFIG_BOOLEAN_NO; + } + else if(unlikely(!message_queue_root)) { + info("Making chart %s (%s) obsolete since it does not have any dimensions", st_msq_messages->name, st_msq_messages->id); + rrdset_is_obsolete(st_msq_messages); + st_msq_messages = NULL; + + info("Making chart %s (%s) obsolete since it does not have any dimensions", st_msq_bytes->name, st_msq_bytes->id); + rrdset_is_obsolete(st_msq_bytes); + st_msq_bytes = NULL; + } + } + } return 0; } diff --git a/collectors/proc.plugin/proc_diskstats.c b/collectors/proc.plugin/proc_diskstats.c index 51fe7f461..7e8bee1e7 100644 --- a/collectors/proc.plugin/proc_diskstats.c +++ b/collectors/proc.plugin/proc_diskstats.c @@ -180,6 +180,8 @@ static unsigned long long int bcache_read_number_with_units(const char *filename return (unsigned long long int)(value * 1024.0 * 1024.0); else if(*end == 'G') return (unsigned long long int)(value * 1024.0 * 1024.0 * 1024.0); + else if(*end == 'T') + return (unsigned long long int)(value * 1024.0 * 1024.0 * 1024.0 * 1024.0); else if(unknown_units_error > 0) { error("bcache file '%s' provides value '%s' with unknown units '%s'", filename, buffer, end); unknown_units_error--; diff --git a/collectors/proc.plugin/proc_stat.c b/collectors/proc.plugin/proc_stat.c index f345a39d6..ad893456b 100644 --- a/collectors/proc.plugin/proc_stat.c +++ b/collectors/proc.plugin/proc_stat.c @@ -427,7 +427,7 @@ static int read_cpuidle_states(char *cpuidle_name_filename , char *cpuidle_time_ } name_buf[r - 1] = '\0'; // erase extra character - cc->cpuidle_state[state].name = strdupz(name_buf); + cc->cpuidle_state[state].name = strdupz(trim(name_buf)); close(fd); snprintfz(filename, FILENAME_MAX, cpuidle_time_filename, core, state); diff --git a/collectors/proc.plugin/sys_fs_btrfs.c b/collectors/proc.plugin/sys_fs_btrfs.c index 5aab24c1a..cb25ad440 100644 --- a/collectors/proc.plugin/sys_fs_btrfs.c +++ b/collectors/proc.plugin/sys_fs_btrfs.c @@ -308,7 +308,11 @@ static inline int find_all_btrfs_pools(const char *path) { char label[FILENAME_MAX + 1] = ""; snprintfz(filename, FILENAME_MAX, "%s/%s/label", path, de->d_name); - read_file(filename, label, FILENAME_MAX); + if(read_file(filename, label, FILENAME_MAX) != 0) { + error("BTRFS: failed to read '%s'", filename); + btrfs_free_node(node); + continue; + } char *s = label; if (s[0]) |