From: Robert Love <rml@tech9.net>
To: Dieter N?tzel <Dieter.Nuetzel@hamburg.de>
Cc: vda <vda@port.imtp.ilyichevsk.odessa.ua>,
Helge Hafting <helgehaf@idb.hist.no>, jlm <jsado@mediaone.net>,
Andre Hedrick <andre@linuxdiskcert.org>,
Linux Kernel List <linux-kernel@vger.kernel.org>
Subject: Re: Poor performance during disk writes
Date: 20 Dec 2001 14:02:20 -0500 [thread overview]
Message-ID: <1008874944.2779.26.camel@phantasy> (raw)
In-Reply-To: <200112201436.fBKEa2m26640@zero.tech9.net>
In-Reply-To: <20011220132729Z286241-18285+3296@vger.kernel.org> <0112201629230E.01835@manta> <200112201436.fBKEa2m26640@zero.tech9.net>
On Thu, 2001-12-20 at 09:35, Dieter N?tzel wrote:
> > Robert maintains latency measurement patch, do you use it?
>
> Yes, I did the ReiserFS lock-break tests for him.
>
> > Does it show where are the problems?
>
> NO, we have no clue, yet :-(
Want to see if its the VM? Rik van Riel has updated his 2.4-ac VM for
new kernels and added reverse page mapping (a neat feature).
It is available at:
http://www.surriel.com/patches/2.4/2.4.16-rmap-6
Give it a whirl, you might me impressed. If not, maybe we can scratch
the VM as the problem and stare meanly at VFS ;-)
(Note my lock-break patch will fail on the new VM. Ignore it. The rest
is still fine. Perhaps I'll do a lock-break for this VM later).
Robert Love
next prev parent reply other threads:[~2001-12-20 19:03 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-20 13:27 Poor performance during disk writes Dieter Nützel
2001-12-20 14:51 ` safemode
2001-12-20 17:40 ` William Lee Irwin III
2001-12-20 18:19 ` Andrew Morton
2001-12-20 18:29 ` Dave Jones
2001-12-21 16:50 ` Jens Axboe
2001-12-21 16:50 ` Jens Axboe
[not found] ` <0112201629230E.01835@manta>
[not found] ` <200112201436.fBKEa2m26640@zero.tech9.net>
2001-12-20 19:02 ` Robert Love [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-12-18 0:53 jlm
2001-12-18 1:09 ` Reid Hekman
2001-12-18 1:36 ` jlm
2001-12-18 2:01 ` Reid Hekman
2001-12-18 18:46 ` Andre Hedrick
2001-12-18 17:42 ` Gérard Roudier
2001-12-18 20:34 ` Andre Hedrick
2001-12-18 19:09 ` Gérard Roudier
2001-12-19 23:26 ` jlm
2001-12-20 10:49 ` Helge Hafting
2001-12-21 16:29 ` Troy Benjegerdes
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