On Mon, 30 Jul 2007, Dan Williams wrote:
[trimmed all but linux-raid from the cc]
On 7/30/07, Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx> wrote:
CONFIG:
Software RAID 5 (400GB x 6): Default mkfs parameters for all filesystems.
Kernel was 2.6.21 or 2.6.22, did these awhile ago.
Can you give 2.6.22.1-iop1 a try to see what affect it has on
sequential write performance?
Download:
http://downloads.sourceforge.net/xscaleiop/patches-2.6.22.1-iop1-x86fix.tar.gz
Unpack into your 2.6.22.1 source tree. Install the x86 series file
"cp patches/series.x86 patches/series". Apply the series with quilt
"quilt push -a".
I recommend trying the default chunk size and default
stripe_cache_size as my tests have shown improvement without needing
to perform any tuning.
Thanks,
Dan
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Will keep in mind for next test, but like I said these were from a while
ago.
Justin.
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