From: "Murray J. Root" <murrayr@brain.org>
To: linux-kernel@vger.kernel.org
Subject: Re: 2.6.0-test6 scheduling(?) oddness
Date: Wed, 1 Oct 2003 01:18:27 -0400 [thread overview]
Message-ID: <20031001051827.GE1416@Master> (raw)
In-Reply-To: <3F7A604F.1060905@cyberone.com.au>
On Wed, Oct 01, 2003 at 03:04:15PM +1000, Nick Piggin wrote:
>
>
> Andrew Morton wrote:
>
> >"Murray J. Root" <murrayr@brain.org> wrote:
> >
> >>The render finishes in the same 30 minutes, then oowriter starts.
> >>oowriter takes about 3 seconds to load if no rendering is going on.
> >>
> >
> >OpenOffice uses sched_yield() in strange ways which causes it to
> >get hopelessly starved on 2.6 kernels. I think RH have a fixed version,
> >but I don't know if that has propagated into the upstream yet.
> >
> >
>
> OK. Aside from the OpenOffice issue, you still have povray taking 50%
> longer to complete, which is quite remarkable if its single threaded and
> nothing else is running. Maybe its not the scheduler change? Anyway,
> Con will want to know exactly which version of his scheduler you used in
> test5 to check for possibilities.
>
patch-test5-O20int
Not sure what caused the increase from 2.6.0-test5 to 2.6.0-test6.
One noticeable thing - I get a noticeable speed increase if I turn off
rendering to the screen, so that it only goes to a file. I don't get
that speed improvement in 2.5.65 - only in 2.6.0-test5 and 2.6.0-test6
test5 goes from 20 mins to about 15 mins (the same speed as 2.5.65 with
or without screen rendering)
test6 goes from 30 mins to 24 mins - still worse than test5 by a lot.
--
Murray J. Root
next prev parent reply other threads:[~2003-10-01 5:18 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-01 3:22 2.6.0-test6 scheduling(?) oddness Murray J. Root
2003-10-01 4:08 ` Nick Piggin
2003-10-01 4:09 ` Nick Piggin
2003-10-01 4:35 ` Murray J. Root
2003-10-01 4:55 ` Andrew Morton
2003-10-01 5:04 ` Nick Piggin
2003-10-01 5:18 ` Murray J. Root [this message]
2003-10-01 6:53 ` Andrew Morton
2003-10-01 7:19 ` Murray J. Root
2003-10-01 5:10 ` Murray J. Root
2003-10-01 21:47 ` bill davidsen
2003-10-01 22:30 ` Ed Sweetman
2003-10-06 2:29 ` bill davidsen
2003-10-06 17:02 ` Murray J. Root
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