Re: Re: tuning for large files in xfs

From: fitzboy
Date: Mon May 22 2006 - 21:04:44 EST

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Subject: Re: tuning for large files in xfs
Date: 22 May 2006 17:59:27 -0700
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the sweet size for me would be a 32k block size on both the RAID and
the XFS partition for me (that is the best number for my application).
However, on the lower level RAID there is a very nominal performance
difference between 32k and 64k stripe size (like 4%), so I just stick
with the defauly 64k. And for the XFS partition, since I am on an intel
machine with 2.6.8, I can only go up to a 2k blocksize...

But to answer your question, the RAID is on a 64k stripe size, and I
just changed my test app to do 2k reads, and still I get the same
performance (with only marginal improvement), so alignment can't be the

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