* Jeff Roberson <[EMAIL PROTECTED]> [070125 19:47] wrote: > > On Thu, 25 Jan 2007, Jeff Roberson wrote: > > >jeff 2007-01-25 23:52:00 UTC > > > > FreeBSD src repository > > > > Modified files: > > sys/kern sched_ule.c > > Log: > > - Implement much more intelligent ipi sending. This algorithm tries to > > minimize IPIs and rescheduling when scheduling like tasks while keeping > > latency low for important threads. > Forgot: Will IPI when: > > > 1) An idle thread is running. > > 2) The current thread is worse than realtime and the new thread is > > better than realtime. Realtime to realtime doesn't preempt. > > 3) The new thread's priority is less than the threshold.
Out of curiosity, have you tried a polling mode where the idlethread will check a word each iteration an in effect pull a soft IPI? I'm not sure this would help or hinder, but it is of interest to me. -- - Alfred Perlstein, RED Incorporated Consulting. - coder / sysadmin / FreeBSD Hacker / All that jazz - _______________________________________________ cvs-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/cvs-all To unsubscribe, send any mail to "[EMAIL PROTECTED]"
