From: tridge@samba.org
To: Andrew Morton <akpm@osdl.org>
Cc: reiser@namesys.com, linux-kernel@vger.kernel.org
Subject: Re: performance of filesystem xattrs with Samba4
Date: Sun, 21 Nov 2004 13:12:20 +1100 [thread overview]
Message-ID: <16799.63876.623759.664933@samba.org> (raw)
In-Reply-To: <20041119162651.2d62a6a8.akpm@osdl.org>
Andrew,
> Is it reproducible with your tricked-up dbench?
>
> If so, please send me a machine description and the relevant command line
> and I'll do a bsearch.
I should explain a little more ....
The current dbench is showing way too much variance on this test to be
really useful. Here are the numbers for 5 runs of dbench 10 on
2.6.10-rc2 and 2.6.10-rc2-mm2:
2.6.10-rc2 325
320
364
360
347
-mm2 347
371
411
322
384
I've solved this variance problem in NBENCH by making the runs fixed
time rather than fixed number of operations, and adding a warmup
phase. I need to do the same to dbench in order to get sane numbers
out that would be at all useful for a binary patch search.
The current dbench worked OK when computers were slower, but now it is
completing its runs so fast that the noise is just silly.
Cheers, Tridge
next prev parent reply other threads:[~2004-11-21 2:13 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <16759.16648.459393.752417@samba.org>
2004-10-21 18:32 ` [PATCH] Re: idr in Samba4 Jim Houston
2004-10-22 6:17 ` tridge
2004-11-19 7:38 ` performance of filesystem xattrs with Samba4 tridge
2004-11-19 8:08 ` James Morris
2004-11-19 10:16 ` Andreas Dilger
2004-11-19 11:43 ` tridge
2004-11-19 22:28 ` Andreas Dilger
2004-11-22 13:02 ` tridge
2004-11-22 21:40 ` Andreas Dilger
2004-11-19 12:03 ` Anton Altaparmakov
2004-11-19 12:43 ` tridge
2004-11-19 14:11 ` Anton Altaparmakov
2004-11-20 10:44 ` tridge
2004-11-20 16:20 ` Hans Reiser
2004-11-20 23:29 ` tridge
2004-11-19 15:34 ` Hans Reiser
2004-11-19 15:58 ` Jan Engelhardt
2004-11-19 22:03 ` tridge
2004-11-20 4:51 ` Hans Reiser
2004-11-19 23:01 ` tridge
2004-11-20 0:26 ` Andrew Morton
2004-11-21 1:14 ` tridge
2004-11-21 2:12 ` tridge [this message]
2004-11-21 23:53 ` tridge
2004-11-23 9:37 ` tridge
2004-11-23 17:55 ` Andreas Dilger
2004-11-24 7:53 ` tridge
2004-11-20 4:40 ` Hans Reiser
2004-11-20 6:47 ` tridge
2004-11-20 16:13 ` Hans Reiser
2004-11-20 23:16 ` tridge
2004-11-21 2:36 ` Hans Reiser
2004-11-21 0:21 ` tridge
2004-11-21 2:41 ` Hans Reiser
2004-11-21 1:53 ` tridge
2004-11-21 2:48 ` Hans Reiser
2004-11-21 3:19 ` tridge
2004-11-21 6:11 ` Hans Reiser
2004-11-21 22:21 ` Nathan Scott
2004-11-21 23:43 ` tridge
2004-12-03 17:49 Steve French
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