cvs commit: src/sys/kern sched_ule.c (fwd)
Jeff Roberson
jroberson at chesapeake.net
Mon Dec 13 08:49:12 PST 2004
On Mon, 13 Dec 2004, Jeff Roberson wrote:
> On Mon, 13 Dec 2004, Jeff Roberson wrote:
>
> > ULE works again with preemption and kse and so on. As far as I know, the
> > only two problems with ULE currently are these:
> ^three
> >
> > 1) nice +20 processes steal too much time from workloads that have some
> > amount of idle time and lots of context switches (buildworld).
> > 2) a nice +20 process can not be killed until there is some idle time in
> > the system.
I just fixed this one too.
> > 3) Performance is not what it could be, especially on HTT.
> >
> > If you encounter any other problems with ULE, please email me directly,
> > without a current cc, as this will ensure the least amount of lag in
> > reply.
> >
> > Thanks,
> > Jeff
> >
> > ---------- Forwarded message ----------
> > Date: Mon, 13 Dec 2004 13:09:33 +0000 (UTC)
> > From: Jeff Roberson <jeff at FreeBSD.org>
> > To: src-committers at FreeBSD.org, cvs-src at FreeBSD.org, cvs-all at FreeBSD.org
> > Subject: cvs commit: src/sys/kern sched_ule.c
> >
> > jeff 2004-12-13 13:09:33 UTC
> >
> > FreeBSD src repository
> >
> > Modified files:
> > sys/kern sched_ule.c
> > Log:
> > - Take up a 'slot' while we're on the assigned queue, waiting to be
> > posted to another processor. Otherwise, kern_switch() gets confused
> > and tries to sched_add(NULL).
> >
> > Revision Changes Path
> > 1.138 +16 -16 src/sys/kern/sched_ule.c
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