Table of Contents
List of Tables
List of Examples
This module helps developers to benchmark their module functions. By adding this module's functions via the configuration file or through its API, OpenSIPS can log profiling information for every function.
The duration between calls to start_timer and log_timer is stored and logged via OpenSIPS's logging facility. Please note that all durations are given as microseconds (don't confuse with milliseconds!).
Important note: as this benchmarking is intended to measure the time spent in executing different parts/blocks of the script (and not for measuring the time induced by the SIP signaling), the benchmark module is to be used within the SAME top route (request route, failure route, branch route, onreply rout, etc). It is not design to be used across different types of top routes (like started in request route and ended in failure route)!!
The following modules must be loaded before this module:
No dependencies on other OpenSIPS modules.
Even when the module is loaded, benchmarking is not enabled per default. This variable may have three different values:
-1 - Globally disable benchmarking
0 - Enable per-timer enabling. Single timers are inactive by default and can be activated through the MI interface as soon as that feature is implemented.
1 - Globally enable benchmarking
Default value is “0”.
Logging normally is not done for every reference to the log_timer() function, but only every n'th call. n is defined through this variable. A sensible granularity seems to be 100.
If granularity is set to 0, then nothing will be logged automatically. Instead bm_poll_results MI command can be used to retrieve the results and clean the local values.
Default value is “100”.
Set the log level for the benchmark logs. These levels should be used:
-3 - L_ALERT
-2 - L_CRIT
-1 - L_ERR
1 - L_WARN
2 - L_NOTICE
3 - L_INFO
4 - L_DBG
Default value is “3” (L_INFO).
This will set the logging level to L_DBG.
Start timer “name”. A later call to “bm_log_timer()” logs this timer..
This function logs the timer with the given ID. The following data are logged:
Last msgs is the number of calls in the last logging interval. This equals the granularity variable.
Last sum is the accumulated duration in the current logging interval (i.e. for the last “granularity” calls).
Last min is the minimum duration between start/log_timer calls during the last interval.
Last max - maximum duration.
Last average is the average duration between bm_start_timer() and bm_log_timer() since the last logging.
Global msgs number of calls to log_timer.
Global sum total duration in microseconds.
Global min... You get the point. :)
Global max also obvious.
Global avg possibly the most interesting value.
Exported pseudo-variables are listed in the next sections.
Enables/disables the module. Parameter may be -1, 0 or 1. See discription of "enable" parameter.
Enable or disable a single timer. The following example enables timer "test" (the second parameter must be 0 to disable):
Returns the current and global results for each timer. This command is only available if the "granularity" variable is set to 0. It can be used to get results in stable time intervals instead of every N messages. Each timer will have 2 nodes - the local and the global values. Format of the values is the same as the one normally used in logfile. This way of getting the results allows to interface with external graphing applications like Munin.
If there were no new calls to bm_log_timer since last check, then all current values of a timer will be equal 0. Each call to bm_poll_results will reset current values (but not global ones).
Example 1.7. Getting the results via FIFO interface
... opensipsctl fifo bm_poll_results register_timer 3/40/12/14/13.333333 9/204/12/97/22.666667 security_check_timer 3/21/7/7/7.000000 9/98/7/41/10.888889 ...
The benchmark module provides an internal API to be used by other OpenSIPS modules. The available functions are identical to the user exported functions.
Please note that this module is intended mainly for developers. It should be used with caution in production environments.
This function register a new timer and/or returns the internal ID associated with the timer. mode controls the creation of new timer if not found. id is to be used by start and log timer functions.
This function equals the user-exported function bm_start_timer. The id is passed as an integer, though.
Example 2.1. Using the benchmark module's API from another module
...
#include "../benchmark/benchmark.h"
...
struct bm_binds bmb;
...
...
/* load the benchmarking API */
if (load_bm_api( &bmb )!=0) {
LM_ERR("can't load benchmark API\n");
goto error;
}
...
...
/* Start/log timers during a (usually user-exported) module function */
bmb.bm_register("test", 1, &id)
bmb.bm_start(id);
do_something();
bmb.bm_log(id);
...
Table 3.1. Top contributors by DevScore(1), authored commits(2) and lines added/removed(3)
| Name | DevScore | Commits | Lines ++ | Lines -- | |
|---|---|---|---|---|---|
| 1. | Daniel-Constantin Mierla (@miconda) | 22 | 10 | 1391 | 50 |
| 2. | Bogdan-Andrei Iancu (@bogdan-iancu) | 21 | 19 | 87 | 53 |
| 3. | Razvan Crainea (@razvancrainea) | 7 | 5 | 15 | 15 |
| 4. | Stanislaw Pitucha | 7 | 3 | 170 | 65 |
| 5. | Henning Westerholt (@henningw) | 6 | 4 | 11 | 10 |
| 6. | Liviu Chircu (@liviuchircu) | 6 | 4 | 7 | 38 |
| 7. | David Sanders | 4 | 2 | 8 | 1 |
| 8. | Anca Vamanu | 3 | 1 | 5 | 2 |
| 9. | Konstantin Bokarius | 3 | 1 | 3 | 5 |
| 10. | Edson Gellert Schubert | 3 | 1 | 0 | 92 |
(1) DevScore = author_commits + author_lines_added / (project_lines_added / project_commits) + author_lines_deleted / (project_lines_deleted / project_commits)
(2) including any documentation-related commits, excluding merge commits. Regarding imported patches/code, we do our best to count the work on behalf of the proper owner, as per the "fix_authors" and "mod_renames" arrays in opensips/doc/build-contrib.sh. If you identify any patches/commits which do not get properly attributed to you, please submit a pull request which extends "fix_authors" and/or "mod_renames".
(3) ignoring whitespace edits, renamed files and auto-generated files
Table 3.2. Most recently active contributors(1) to this module
| Name | Commit Activity | |
|---|---|---|
| 1. | Bogdan-Andrei Iancu (@bogdan-iancu) | Jul 2007 - Jun 2018 |
| 2. | Liviu Chircu (@liviuchircu) | Mar 2014 - Jun 2018 |
| 3. | Razvan Crainea (@razvancrainea) | Sep 2011 - Aug 2015 |
| 4. | David Sanders | Aug 2012 - Jan 2013 |
| 5. | Anca Vamanu | Sep 2009 - Sep 2009 |
| 6. | Stanislaw Pitucha | Aug 2009 - Sep 2009 |
| 7. | Daniel-Constantin Mierla (@miconda) | Jul 2007 - Mar 2008 |
| 8. | Konstantin Bokarius | Mar 2008 - Mar 2008 |
| 9. | Edson Gellert Schubert | Feb 2008 - Feb 2008 |
| 10. | Henning Westerholt (@henningw) | Aug 2007 - Dec 2007 |
(1) including any documentation-related commits, excluding merge commits
Last edited by: Bogdan-Andrei Iancu (@bogdan-iancu), Liviu Chircu (@liviuchircu), Stanislaw Pitucha, Daniel-Constantin Mierla (@miconda), Konstantin Bokarius, Edson Gellert Schubert, Henning Westerholt (@henningw).
doc copyrights:
Copyright © 2007 Collax GmbH
Copyright © 2007 Voice Sistem SRL