cvs commit: src/sys/kern sched_ule.c (fwd)
Jeff Roberson
jroberson at chesapeake.net
Mon Dec 13 06:15:27 PST 2004
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.
> 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
> _______________________________________________
> freebsd-current at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-current
> To unsubscribe, send any mail to "freebsd-current-unsubscribe at freebsd.org"
>
More information about the freebsd-current
mailing list