From: Christoph Rohland <cr@sap.com>
To: Andrea Arcangeli <andrea@suse.de>
Cc: Wilhelm Nuesser <wilhelm.nuesser@sap.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
linux-kernel@vger.kernel.org,
Rik van Riel <riel@conectiva.com.br>
Subject: Re: clarification about redhat and vm
Date: Sat, 19 Jan 2002 11:50:59 +0100 [thread overview]
Message-ID: <m3wuye397w.fsf@linux.local> (raw)
In-Reply-To: <E16RFE9-00042W-00@the-village.bc.nu> <3C485169.7070005@sap.com> <20020118200700.A21279@athlon.random>
In-Reply-To: <20020118200700.A21279@athlon.random> (Andrea Arcangeli's message of "Fri, 18 Jan 2002 20:07:01 +0100")
Hi Andrea,
On Fri, 18 Jan 2002, Andrea Arcangeli wrote:
> and I assume you were using either ext2 or reiserfs anyways, so the
> fsync problem never affected you since the first place (also with
> older kernels) I believe.
It was done on ext2 _and_ against raw devices. Same dendency on both
setups.
Further on I doubt the test is very depended on fsync. It should be
swap io limited since it runs with a way too small memory
configuration.
If you have enough memory the test is not very IO intensive either
despite the fact that a big database is running. To bring the database
really into IO you have to add application servers. (Fujitsu Siemens
took 160 4way Linux servers to saturate a database server running
Solaris on 64way FSC Primepower.)
BTW since we are just bashing VMs: I always hear that 2.2 is so much
better: The first 2.2 kernel which could really survive this test was
2.2.19!
Greetings
Christoph
next prev parent reply other threads:[~2002-01-19 13:39 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.33L.0201162235480.32617-100000@imladris.surriel .com>
2002-01-16 19:04 ` Rik spreading bullshit about VM Andrea Arcangeli
2002-01-16 20:11 ` Jose Luis Domingo Lopez
2002-01-16 20:58 ` Richard Gooch
2002-01-16 21:10 ` Dave Jones
2002-01-16 21:17 ` Rik van Riel
2002-01-17 13:42 ` [lkml] " Ian Soboroff
2002-01-18 3:21 ` ...Re: " Dan Mann
2002-01-17 0:20 ` Luigi Genoni
2002-01-16 21:17 ` Craig Knox
2002-01-16 20:58 ` Bongani Hlope
2002-01-16 20:55 ` John Levon
2002-01-16 21:21 ` Bongani Hlope
2002-01-16 21:29 ` Adam Kropelin
2002-01-17 14:17 ` async buffer flushing reported slowdown (could be a driver issue?) Andrea Arcangeli
2002-01-18 0:28 ` Adam Kropelin
2002-01-16 21:58 ` Rik spreading bullshit about VM Diego Calleja
2002-01-16 22:02 ` Rik van Riel
2002-01-17 14:35 ` bugfix backed out Andrea Arcangeli
2002-01-17 15:04 ` Rik van Riel
2002-01-17 15:52 ` Andrea Arcangeli
2002-01-17 14:25 ` oom failures with mem=4m Andrea Arcangeli
2002-01-16 21:59 ` Rik spreading bullshit about VM Diego Calleja
2002-01-16 22:44 ` Chris Chabot
2002-01-17 8:18 ` Christoph Rohland
2002-01-17 14:13 ` blkdev speedup Andrea Arcangeli
2002-01-17 0:07 ` Rik spreading bullshit about VM Erik Mouw
2002-01-17 0:25 ` J Sloan
2002-01-17 1:15 ` Erik Mouw
2002-01-17 17:40 ` bill davidsen
2002-01-17 14:14 ` Alan Cox
2002-01-18 4:30 ` Bosko Radivojevic
2002-01-18 4:36 ` vm philosophising Rik van Riel
2002-01-18 4:58 ` Matthew Johnson
2002-01-18 5:12 ` Rik van Riel
2002-01-18 5:18 ` Ryan Cumming
2002-01-18 5:43 ` Matthew Johnson
2002-01-21 17:55 ` Bill Davidsen
2002-01-18 6:05 ` Matthew Johnson
2002-01-18 14:42 ` Tommy Faasen
2002-01-18 15:52 ` listmail
2002-01-21 15:50 ` The Doctor What
2002-01-21 16:16 ` Mike Harrold
2002-01-18 15:55 ` Mr. Shannon Aldinger
2002-01-18 18:39 ` Oliver Xymoron
2002-01-18 19:23 ` Alan Cox
2002-01-18 20:17 ` David Schwartz
2002-01-18 21:39 ` Alan Cox
2002-01-19 4:42 ` David Luyer
2002-01-19 18:00 ` Rob Landley
2002-01-20 5:42 ` Stevie O
2002-01-17 0:38 ` Rik spreading bullshit about VM Rik van Riel
2002-01-17 1:50 ` Nicolas Pitre
2002-01-17 11:45 ` Rik van Riel
2002-01-17 12:02 ` Stephan von Krawczynski
2002-01-17 2:14 ` Andrea Scrimieri
2002-01-17 12:07 ` Rik van Riel
2002-01-17 13:11 ` Andrea Scrimieri
2002-01-17 13:15 ` Rik van Riel
2002-01-17 14:02 ` Alan Cox
2002-01-17 21:41 ` Trever L. Adams
2002-01-18 1:46 ` brian
2002-01-17 1:52 ` Stephen Satchell
2002-01-17 13:26 ` Alan Cox
2002-01-17 15:10 ` clarification about redhat and vm Andrea Arcangeli
2002-01-17 15:21 ` Rik van Riel
2002-01-17 16:17 ` Alan Cox
2002-01-17 16:31 ` Andrea Arcangeli
2002-01-18 16:46 ` Wilhelm Nuesser
2002-01-18 19:07 ` Andrea Arcangeli
2002-01-19 10:50 ` Christoph Rohland [this message]
2002-01-19 13:54 ` Alan Cox
2002-01-19 17:38 ` Andrea Arcangeli
2002-01-18 16:53 ` Willi Nüßer
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