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 03:38:59 +0200 [thread overview]
Message-ID: <200109210143.f8L1hnm08604@mailb.telia.com> (raw)
In-Reply-To: <E15kEjB-0006n9-00@the-village.bc.nu>
In-Reply-To: <E15kEjB-0006n9-00@the-village.bc.nu>
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...
/RogerL
--
Roger Larsson
Skellefteå
Sweden
next prev parent reply other threads:[~2001-09-21 1:43 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 [this message]
2001-09-21 1:53 ` Roger Larsson
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
[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
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
[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 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 21:09 ` Robert Love
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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