cvs commit: src/sys/kern sched_ule.c
joao.barros at gmail.com
Wed Jul 18 11:58:06 UTC 2007
On 7/17/07, Jeff Roberson <jeff at freebsd.org> wrote:
> jeff 2007-07-17 22:53:24 UTC
> FreeBSD src repository
> Modified files:
> sys/kern sched_ule.c
> ULE 3.0: Fine grain scheduler locking and affinity improvements. This has
> been in development for over 6 months as SCHED_SMP.
> - Implement one spin lock per thread-queue. Threads assigned to a
> run-queue point to this lock via td_lock.
> - Improve the facility for assigning threads to CPUs now that sched_lock
> contention no longer dominates scheduling decisions on larger SMP
> - Re-write idle time stealing in an attempt to make it less damaging to
> general performance. This is still disabled by default. See
> - Call the long-term load balancer from a callout rather than sched_clock()
> so there are no locks held. This is disabled by default. See
> - Parameterize many scheduling decisions via sysctls. Try to document
> these via sysctl descriptions.
> - General structural and naming cleanups.
> - Document each function with comments.
> Tested by: current@ amd64, x86, UP, SMP.
> Approved by: re
> Revision Changes Path
> 1.200 +917 -549 src/sys/kern/sched_ule.c
I've been following your blog on this, *great* job!
Beer is on me if you're ever in Portugal :D
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