cvs commit: src/sys/kern sched_ule.c

[Andre Oppermann]

Jeff Roberson wrote:
> 
> On Thu, 12 Aug 2004, Jeff Roberson wrote:
> 
> > jeff        2004-08-12 07:56:33 UTC
> >
> >   FreeBSD src repository
> >
> >   Modified files:
> >     sys/kern             sched_ule.c
> >   Log:
> >    - Introduce a new flag KEF_HOLD that prevents sched_add() from doing a
> >      migration.  Use this in sched_prio() and sched_switch() to stop us from
> >      migrating threads that are in short term sleeps or are runnable.  These
> >      extra migrations were added in the patches to support KSE.
> 
> This patch brings my 'super-smack' performance in ULE above that of 4BSD.
> worldstone seems unaffected.  I would be interested in hearing about what
> other performance changes there are as a result of this patch.  I would
> also be interested in hearing about cases where ULE is slower than 4BSD.

See -current list of yesterday.  Martin Blapp was reporting problems with
some 500 sendmail/milter etc. processes where it get slower and slower
compared to 4BSD.

-- 
Andre