Re: Sched_Ule

On Thu, 9 Oct 2003, Evan Dower wrote:

> I ran with SCHED_ULE for a couple days recently and had trouble beyond just
> sluggishness. When doing really intensive tasks such as buildworld or
> installworld, the computer would actually stall. The first time was
> immediately after booting single user after building the world and kernel. I
> started and installworld, and it hung there until I did a hard reset.
> Horrible timing for it, but such is life. Later (after I fixed the damage
> from the partial install) it hung when doing my buildworld, so I booted up
> on a different (SCHED_4BSD) kernel to do the buildworld (subsequently
> switching back to SCHED_4BSD). If you want any particulars about my system
> just let me know.

Do you have P4's with hyper threading?


> --
> Evan Dower
> Undergraduate, Computer Science
> University of Washington
> Public key: http://students.washington.edu/evantd/pgp-pub-key.txt
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>
>
>
> >From: Scott Sipe <css3_at_duke.edu>
> >To: current_at_freebsd.org
> >Subject: Sched_Ule
> >Date: Thu, 9 Oct 2003 00:28:59 -0400 (EDT)
> >
> >
> >Hi,
> >
> >I see some posts from late Sept about people having issues with SCHED_ULE.
> >I just wanted to add in that I am having the exact same problems.  In
> >short:
> >
> >Anything that seems disk intensive: bzip2 (unbzip2ing one big file makes
> >this happen), making world, building ports, etc makes my X environment
> >practically unusable.  Mouse stutters, reaction times is very slow, feels
> >10x more sluggish than normal.  (I'm running KDE if anyone is curious).
> >
> >I rebuilt my kernel today (running yesterday's world) with SCHED_4BSD
> >instead, and things are much better.  System is much much more responsive.
> >
> >If there's any tests I can run, or anyone I should talk to, I'd love to be
> >of assistance,
> >
> >thanks much,
> >Scott
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