From: Andrew Morton <akpm@zip.com.au>
To: "Gross, Mark" <mark.gross@intel.com>
Cc: "'Dave Hansen'" <haveblue@us.ibm.com>,
"'Russell Leighton'" <russ@elegant-software.com>,
mgross@unix-os.sc.intel.com,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
lse-tech@lists.sourceforge.net, "Griffiths,
Richard A" <richard.a.griffiths@intel.com>
Subject: Re: [Lse-tech] Re: ext3 performance bottleneck as the number of spindles gets large
Date: Thu, 20 Jun 2002 14:11:56 -0700 [thread overview]
Message-ID: <3D12451C.820D3285@zip.com.au> (raw)
In-Reply-To: 59885C5E3098D511AD690002A5072D3C057B49A4@orsmsx111.jf.intel.com
"Gross, Mark" wrote:
>
> ...
> The workload is http://www.coker.com.au/bonnie++/ (one of the newer versions
> ;)
>
Please tell me exactly how you're using it: how many filesystems, how
many controllers, disk topology, physical memory, size of filesystems,
etc. Sufficient for me to be able to reproduce it and find out what
is happening.
Also: what is your best-case aggregate bandwidth? Platter-speed of disks
multiplied by number of disks, please?
Thanks to the BKL you've effectively got 1.3 to 1.5 CPUs, but we should be
able to saturate six or eight disks on a uniprocessor kernel. It's
possible that we're looking at the wrong thing.
-
next prev parent reply other threads:[~2002-06-20 21:13 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-20 16:24 [Lse-tech] Re: ext3 performance bottleneck as the number of s pindles gets large Gross, Mark
2002-06-20 21:11 ` Andrew Morton [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-06-23 4:33 ext3 performance bottleneck as the number of spindles " Andreas Dilger
2002-06-23 6:00 ` Christopher E. Brown
2002-06-23 6:35 ` [Lse-tech] " William Lee Irwin III
2002-06-23 7:29 ` Dave Hansen
2002-06-23 7:36 ` William Lee Irwin III
2002-06-23 7:45 ` Dave Hansen
2002-06-23 7:55 ` Christopher E. Brown
2002-06-23 8:11 ` David Lang
2002-06-23 8:31 ` Dave Hansen
2002-06-23 16:21 ` Martin J. Bligh
2002-06-23 17:06 ` Eric W. Biederman
2002-06-21 22:03 Duc Vianney
2002-06-21 23:11 ` Andrew Morton
2002-06-22 0:19 ` kwijibo
2002-06-22 8:10 ` kwijibo
[not found] <59885C5E3098D511AD690002A5072D3C057B499E@orsmsx111.jf.intel.com>
2002-06-20 16:10 ` Dave Hansen
2002-06-20 20:47 ` John Hawkes
2002-06-19 21:29 mgross
2002-06-20 0:54 ` Andrew Morton
2002-06-20 4:09 ` [Lse-tech] " Dave Hansen
2002-06-20 6:03 ` Andreas Dilger
2002-06-20 6:53 ` Andrew Morton
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