From: Rodney Gordon II <meff@pobox.com>
To: Wu Fengguang <wfg@mail.ustc.edu.cn>,
Con Kolivas <kernel@kolivas.org>,
linux list <linux-kernel@vger.kernel.org>,
ck list <ck@vds.kolivas.org>
Subject: Re: [ck] 2.6.16-ck1
Date: Thu, 23 Mar 2006 07:21:41 -0600 [thread overview]
Message-ID: <20060323132141.GA12508@spherenet.spherevision.org> (raw)
In-Reply-To: <20060323131439.GA4700@mail.ustc.edu.cn>
On Thu, Mar 23, 2006 at 09:14:39PM +0800, Wu Fengguang wrote:
> Hi Rodney,
>
> Thanks for your testing :)
>
> On Thu, Mar 23, 2006 at 05:31:18AM -0600, Rodney Gordon II wrote:
> > Adaptive readahead: I had probs with this before, and I still do.. On
> > a desktop if you have odd problems (nothing responding for SECONDS,
> > very slow disk I/O during heavy I/O, etc..) disable it.
>
> Your problem on I/O latency with ara can be tracked down with the help
> of Ingo's latency tracing patch. It goes like this:
>
> 1) download
> http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.16.tar.bz2
> http://www.vanheusden.com/ara/adaptive-readahead-11-2.6.16-rc6.patch.gz
> http://people.redhat.com/mingo/latency-tracing-patches/latency-tracing-v2.6.16.patch
>
> 2)
> tar jxf linux-2.6.16.tar.bz2
> gunzip adaptive-readahead-11-2.6.16-rc6.patch.gz
> cd linux-2.6.16
> patch -p1 < ../adaptive-readahead-11-2.6.16-rc6.patch
> patch -p1 < ../latency-tracing-v2.6.16.patch
>
> 3) compile kernel with Adaptive readahead support
> 4) boot with the new kernel, and run
> echo 0 > /proc/sys/kernel/preempt_max_latency
> 5) feel some latency problems
> 6) report the content of /proc/latency_trace
>
> Thanks,
> Wu
Will try this as soon as I can get some net drivers working under
2.6.16 ...
-r
--
Rodney "meff" Gordon II -*- meff@pobox.com
Systems Administrator / Coder Geek -*- Open yourself to OpenSource
next prev parent reply other threads:[~2006-03-23 13:21 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-20 10:45 2.6.16-ck1 Con Kolivas
[not found] ` <3aa654a40603200300r28034d9di86ed58107d245f08@mail.gmail.com>
2006-03-20 11:39 ` [ck] 2.6.16-ck1 Hugo Vanwoerkom
2006-03-23 11:31 ` Rodney Gordon II
2006-03-23 11:40 ` Con Kolivas
2006-03-23 12:00 ` Rodney Gordon II
2006-03-23 12:37 ` Matt Heler
2006-03-23 13:14 ` Wu Fengguang
2006-03-23 13:21 ` Rodney Gordon II [this message]
[not found] ` <dvv0ob$nql$1@sea.gmane.org>
2006-03-23 22:31 ` Stephen Hassard
2006-03-24 6:58 ` 2.6.16-ck1 Edouard Gomez
2006-03-25 18:03 ` [ck] 2.6.16-ck1 Rodney Gordon II
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