Searched hist:177372 (Results 1 - 1 of 1) sorted by relevance
| /freebsd-10.1-release/sys/kern/ | ||
| H A D | subr_sleepqueue.c | diff 177372 Wed Mar 19 05:22:07 MDT 2008 jeff - Add a facility similar to LOCK_PROFILING under SLEEPQUEUE_PROFILING. Keep a simple (wmesg, count) tuple in a hash to keep track of how many times we sleep at each wait message. We hash on message and not channel. No line number information is given as typically wait messages are not used in more than one place. Identical strings defined at different addresses will show up with seperate counters. - Use debug.sleepq.enable to enable, .reset to reset, and .stats dumps stats. - Do an unsynchronized check in sleepq_switch() prior to switching before calling sleepq_profile() which uses a global lock to synchronize the hash. Only sleeps which actually cause a context switch are counted. |
Completed in 72 milliseconds