From: Andrew Morton <akpm@digeo.com>
To: Maciej Soltysiak <solt@dns.toxicfilms.tv>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.5.65 interactivity
Date: Sat, 22 Mar 2003 13:25:51 -0800 [thread overview]
Message-ID: <20030322132551.75ff8ab8.akpm@digeo.com> (raw)
In-Reply-To: <Pine.LNX.4.51.0303221929350.28558@dns.toxicfilms.tv>
Maciej Soltysiak <solt@dns.toxicfilms.tv> wrote:
>
> Hello,
>
> I am experiencing dramatic interactivity degradation when
> apt-get upgrade is setting up the packages under X, with X running with
> nice 0 (it previously had -10)
>
> x-terminal-emualtor windows stop getting refreshed, xmms stops playing,
> and after a few seconds everything stops responding and gets going after
> another few seconds.
>
First thing we need to work out is whether it is a CPU scheduler thing
or if it is a VM/MM/block/fs latency problem.
- How much memory do you have?
- Are your disks runnning in DMA mode? (run hdparm /dev/hda)
- Send `vmstat 1' traces from when the problem is happening.
- If you nice up the X server, does that help?
- Try setting /proc/sys/vm/swappiness to zero
- Try decreasing /proc/sys/vm/dirty_ratio to 15
next prev parent reply other threads:[~2003-03-22 21:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-22 18:43 Maciej Soltysiak
2003-03-22 21:25 ` Andrew Morton [this message]
2003-03-24 18:36 ` Maciej Soltysiak
2003-03-24 18:59 ` Andrew Morton
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