From: Peter Rabbitson <rabbit@rabbit.us>
To: linux-raid@vger.kernel.org
Subject: Re: Help with chunksize on raid10 -p o3 array
Date: Wed, 07 Mar 2007 10:28:46 +0100 [thread overview]
Message-ID: <45EE85CE.6010501@rabbit.us> (raw)
In-Reply-To: <45EE07EB.8050604@tmr.com>
Bill Davidsen wrote:
> Peter Rabbitson wrote:
>> Hi,
>> I have been trying to figure out the best chunk size for raid10 before
> By any chance did you remember to increase stripe_cache_size to match
> the chunk size? If not, there you go.
At the end of /usr/src/linux/Documentation/md.txt it specifically says
that stripe_cache_size is raid5 specific, and it made sense to me, as
caching stuff to avoid re-doing parity is beneficial. I will test later
today trying to set the cache higher. Are there any guidelines on how
large should it be in relation to the chunk size/number of drives for
raid10?
next prev parent reply other threads:[~2007-03-07 9:28 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-06 11:26 Help with chunksize on raid10 -p o3 array Peter Rabbitson
2007-03-07 0:31 ` Bill Davidsen
2007-03-07 9:28 ` Peter Rabbitson [this message]
2007-03-12 4:28 ` Neil Brown
2007-03-12 14:46 ` Peter Rabbitson
2007-03-12 18:45 ` Richard Scobie
2007-03-12 21:16 ` Peter Rabbitson
2007-03-19 14:14 ` raid10 far layout outperforms offset at writing? (was: Help with chunksize on raid10 -p o3 array) Peter Rabbitson
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