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From: Adrian Chadd <adrian@freebsd.org>
To: Andrey Chernov <ache@freebsd.org>, Ivan Klymenko <fidaj@ukr.net>,
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Subject: Re: SCHED_ULE should not be the default
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On 13 December 2011 01:00, Andrey Chernov <ache@freebsd.org> wrote:

>> If the algorithm ULE does not contain problems - it means the problem
>> has Core2Duo, or in a piece of code that uses the ULE scheduler.
>
> I observe ULE interactivity slowness even on single core machine (Pentium
> 4) in very visible places, like 'ps ax' output stucks in the middle by ~1
> second. When I switch back to SHED_4BSD, all slowness is gone.

Are you able to provide KTR traces of the scheduler results? Something
that can be fed to schedgraph?


Adrian