From: Roger Larsson <roger.larsson@norran.net>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: oxymoron@waste.org (Oliver Xymoron),
Dieter.Nuetzel@hamburg.de (Dieter Nützel),
stefan@space.twc.de (Stefan Westerfeld),
rml@tech9.net (Robert Love),
linux-kernel@vger.kernel.org (linux-kernel)
Subject: Re: [PATCH] Preemption Latency Measurement Tool
Date: Fri, 21 Sep 2001 03:53:08 +0200 [thread overview]
Message-ID: <200109210157.f8L1vwm15951@mailb.telia.com> (raw)
In-Reply-To: <E15kEjB-0006n9-00@the-village.bc.nu> <200109210143.f8L1hnm08604@mailb.telia.com>
In-Reply-To: <200109210143.f8L1hnm08604@mailb.telia.com>
On Friday 21 September 2001 03.38, Roger Larsson wrote:
> On Friday 21 September 2001 03.03, Alan Cox wrote:
> > > If this analysis is correct:
> > > We really need to run RT processes with RT priorities!
> > >
> > > It is also possible that multimedia applications needs to be rewritten
> > > = to
> >
> > I dont believe this is an application problem. Applications allocating
> > memory can end up doing page outs for other people. Its really important
> > they dont get stuck doing a huge amount of pageout work for someone else.
> > Thats one thing I seem to be seeing with the 10pre11 VM.
> >
> > Sound cards have a lot of buffering, we are talking 64-128Kbytes + on
> > card buffers. Thats 0.25-0.5 seconds at 48Khz 16bit stereo
>
> Hmm..
>
> The yield we do in __alloc_pages is it really correct?
> 1. Suppose it is not we that are the problem.
> 2. Suppose there are lots of other processes that gets to run.
> 3. If kswapd had higher prio, it would start to run without us giving up...
>
> I have to try...
>
They were already gone in -pre12!
But I was running -pre10...
Others?
Dieter is running -pre12...
I will test it anyways...
/RogerL
--
Roger Larsson
Skellefteå
Sweden
next prev parent reply other threads:[~2001-09-21 1:58 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200109202253.RAA21082@waste.org>
2001-09-20 23:15 ` Oliver Xymoron
2001-09-21 0:42 ` Roger Larsson
2001-09-21 1:03 ` Alan Cox
2001-09-21 1:22 ` Andrea Arcangeli
2001-09-21 1:51 ` Rik van Riel
2001-09-21 1:38 ` Roger Larsson
2001-09-21 1:53 ` Roger Larsson [this message]
2001-09-21 2:08 ` Roger Larsson
2001-09-21 2:29 ` Rik van Riel
2001-09-21 16:24 ` Jussi Laako
2001-09-21 16:36 ` Alan Cox
2001-09-21 18:46 ` Thomas Sailer
2001-09-22 10:30 ` Jussi Laako
2001-09-21 16:18 ` Stefan Westerfeld
2001-09-21 20:18 ` Dieter Nützel
2001-09-21 21:47 ` Robert Love
2002-04-09 5:23 [PATCH] preemption latency measurement tool Robert Love
[not found] <200109200758.f8K7wEG13675@zero.tech9.net>
2001-09-19 22:44 ` [PATCH] Preemption Latency Measurement Tool Robert Love
2001-09-20 1:40 ` Ignacio Vazquez-Abrams
2001-09-20 2:23 ` safemode
2001-09-20 1:13 ` David Lang
2001-09-20 2:57 ` Robert Love
2001-09-20 2:38 ` Robert Love
2001-09-20 6:31 ` Dieter Nützel
2001-09-20 6:31 ` Dieter Nützel
[not found] ` <20010920063143.424BD1E41A@Cantor.suse.de>
2001-09-20 6:41 ` Andrea Arcangeli
2001-09-20 7:57 ` Dieter Nützel
2001-09-20 21:09 ` Robert Love
[not found] ` <20010920075751.6CA791E6B2@Cantor.suse.de>
2001-09-20 8:21 ` Andrea Arcangeli
2001-09-20 20:13 ` george anzinger
2001-09-20 20:38 ` Randy.Dunlap
2001-09-20 21:10 ` Robert Love
2001-09-20 21:35 ` Dieter Nützel
2001-09-20 22:03 ` Oliver Xymoron
2001-09-20 22:51 ` Dieter Nützel
2001-09-21 3:17 ` Robert Love
2001-09-21 15:48 ` george anzinger
2001-09-22 21:09 ` Dieter Nützel
2001-09-22 23:40 ` safemode
2001-09-22 23:46 ` Dieter Nützel
2001-09-23 0:15 ` safemode
[not found] ` <200109222340.BAA37547@blipp.internet5.net>
2001-09-23 0:38 ` Roger Larsson
2001-09-23 1:42 ` safemode
2001-09-23 3:02 ` Robert Love
2001-09-23 16:43 ` Roger Larsson
2001-09-23 0:42 ` Dieter Nützel
2001-09-23 2:50 ` Robert Love
2001-09-23 3:14 ` george anzinger
2001-09-23 4:06 ` Dieter Nützel
2001-09-23 2:54 ` Robert Love
2001-09-23 2:58 ` Robert Love
2001-09-23 2:44 ` Robert Love
[not found] ` <200109200757.JAA60995@blipp.internet5.net>
2001-09-20 17:37 ` Roger Larsson
2001-09-20 21:29 ` Robert Love
2001-09-20 21:53 ` Dieter Nützel
2001-09-20 20:01 ` Tobias Diedrich
2001-09-20 20:27 ` Robert Love
2001-09-20 22:01 ` Robert Love
2001-09-22 3:57 ` Andre Pang
2001-09-22 6:10 ` Robert Love
2001-09-22 7:22 ` Andre Pang
2001-09-23 3:18 ` george anzinger
2001-09-23 3:21 ` Robert Love
2001-09-23 7:05 ` Robert Love
2001-09-23 12:03 ` Andre Pang
2001-09-23 18:31 ` Robert Love
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