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| author | Dan Gudmundsson <[email protected]> | 2012-01-25 15:44:16 +0100 |
|---|---|---|
| committer | Dan Gudmundsson <[email protected]> | 2012-02-06 15:00:34 +0100 |
| commit | 6992261d258f2fc0b25ddf99ebcbf66ae02f5df8 (patch) | |
| tree | 47aa7dc8a740c037bc505e822480ec0883375a6b /erts/doc | |
| parent | d39e5702b224592bc79cc3ca122dcb0b59162d7f (diff) | |
| download | otp-6992261d258f2fc0b25ddf99ebcbf66ae02f5df8.tar.gz otp-6992261d258f2fc0b25ddf99ebcbf66ae02f5df8.tar.bz2 otp-6992261d258f2fc0b25ddf99ebcbf66ae02f5df8.zip | |
emulator: Document and test scheduler_wall_time
Diffstat (limited to 'erts/doc')
| -rw-r--r-- | erts/doc/src/erlang.xml | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml index a603d5c2b8..f2b95678b9 100644 --- a/erts/doc/src/erlang.xml +++ b/erts/doc/src/erlang.xml @@ -4,7 +4,7 @@ <erlref> <header> <copyright> - <year>1996</year><year>2011</year> + <year>1996</year><year>2012</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -4933,6 +4933,21 @@ true</pre> threads in the Erlang run-time system and may therefore be greater than the wall-clock time.</p> </item> + <tag><marker id="statistics_scheduler_wall_time"><c>scheduler_wall_time</c></marker></tag> + <item> + <p>Returns + <c>[{Scheduler_Id, Scheduler_Worked_Time, Scheduler_Total_Time}]</c>, time lapses are since the + the system flag <seealso marker="#system_flag_scheduler_wall_time">scheduler_wall_time</seealso> + was set to true. + Returns <c>undefined</c> if the system flag <seealso marker="#system_flag_scheduler_wall_time"> + scheduler_wall_time</seealso> is set to false. + </p> + <p>The list of scheduler information is unsorted and may come in different order + between calls. The time unit is undefined and may be changed and should only be used + to calculate relative utilization. + </p> + </item> + <tag><c>wall_clock</c></tag> <item> <p>Returns @@ -5305,6 +5320,14 @@ true</pre> flags. </p> </item> + <tag><marker id="system_flag_scheduler_wall_time"><c>erlang:system_flag(scheduler_wall_time, Boolean)</c></marker></tag> + <item> + <p>Turns on/off scheduler wall time measurements. </p> + <p>For more information see, + <seealso marker="#statistics_scheduler_wall_time">erlang:statistics(scheduler_wall_time)</seealso>. + </p> + </item> + <tag><marker id="system_flag_schedulers_online"><c>erlang:system_flag(schedulers_online, SchedulersOnline)</c></marker></tag> <item> <p>Sets the amount of schedulers online. Valid range is @@ -5316,6 +5339,7 @@ true</pre> <seealso marker="#system_info_schedulers_online">erlang:system_info(schedulers_online)</seealso>. </p> </item> + <tag><c>erlang:system_flag(trace_control_word, TCW)</c></tag> <item> <p>Sets the value of the node's trace control word to |