From: Rui Santos <rsantos@grupopie.com>
To: koan <koan00@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Slow Soft-RAID 5 performance
Date: Wed, 18 Jul 2007 18:14:24 +0100 [thread overview]
Message-ID: <469E4A70.1000306@grupopie.com> (raw)
In-Reply-To: <64d833020707180707i1bbbbcbao783e33a2487c9e2b@mail.gmail.com>
koan wrote:
> How did you create the ext3 filesystem?
The chunk_size is at 256KB, ext3 block size is 4k. I believe the correct
option that should be passed trough to --stride is 64.
Am I correct ?
I've also tested ( after sending my first report ) with xfs.
I've also increases readahead to 65535 on all HD's
I've also increases the stripe_cache_size to 16384.
I can now get ~100MB/sec...
>
> Did you use the appropriate --stride option as noted here:
> http://tldp.org/HOWTO/Software-RAID-HOWTO-5.html (#5.11)
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next prev parent reply other threads:[~2007-07-18 17:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-18 14:07 Slow Soft-RAID 5 performance koan
2007-07-18 17:14 ` Rui Santos [this message]
2007-07-18 18:07 ` koan
2007-07-19 11:43 ` Rui Santos
-- strict thread matches above, loose matches on Subject: below --
2007-07-18 9:56 Rui Santos
2007-07-18 10:28 ` Justin Piszcz
2007-07-18 14:49 ` J.A. Magallón
2007-07-18 17:17 ` Rui Santos
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