From: Andrew Morton <akpm@digeo.com>
To: alan@cotse.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: [BENCHMARK] 2.5.46-mm1 with contest
Date: Thu, 07 Nov 2002 16:48:03 -0800 [thread overview]
Message-ID: <3DCB09C3.1EDB05EC@digeo.com> (raw)
In-Reply-To: YWxhbg==.5c396bf3e8e65dc7442a4adb6f35702e@1036715544.cotse.net
Alan Willis wrote:
>
> > Why? We are preempting during the generic file write/read routines, I
> > bet, which can otherwise be long periods of latency. CPU is up and I
> > bet the throughput is down, but his test is getting the attention it
> > wants.
>
> I'm curious, would running contest after a fresh boot and with profile=2
> provide a profile that tells exactly where time is being spent? Since
> about 2.5.45 I've had some strange slow periods, and starting aterm
> would take a while, redrawing windows in X would slow down, it 'feels'
> like my workstation becomes a laptop that is just waking up. Sometimes
> this is after only a few minutes of inactivity, or after switching
> virtual desktops in kde, or when I have alot of aterm instances running.
- Run `vmstat 1', and see if the slowdowns coincide with any unusual
IO activity.
- Could be the scheduler. Try
renice -19 $(pidof X) $(pidof aterm) $(pidof other stuff)
next prev parent reply other threads:[~2002-11-08 0:41 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-08 0:32 [BENCHMARK] 2.5.46-mm1 with contest Alan Willis
2002-11-08 0:48 ` Andrew Morton [this message]
2002-11-08 21:08 ` Alan Willis
2002-11-08 21:21 ` Andrew Morton
[not found] ` <YWxhbg==.a11f3fbc6d68c50c7f190513c1d3bacf@1037045821.cotse.net>
2002-11-11 21:03 ` Andrew Morton
2002-11-11 21:11 ` Alan Willis
2002-11-11 21:32 ` Andrew Morton
2002-11-13 0:14 ` Denis Vlasenko
2002-11-12 20:07 ` Alan Willis
-- strict thread matches above, loose matches on Subject: below --
2002-11-07 22:53 Con Kolivas
2002-11-07 23:48 ` Robert Love
2002-11-07 23:58 ` Andrew Morton
2002-11-08 0:04 ` Robert Love
2002-11-08 6:04 ` Con Kolivas
2002-11-08 0:10 ` Benjamin LaHaise
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