On Jul 02, 2008 10:18 +0200, Andrei Maslennikov wrote:
> One single thread writing over Infiniband (with RHEL4-supplied OFED 1.2++).
>
> lmdd of=/lustre/testX bs=1M time=20 fsync=1
>
> Lustre 1.6.4.3 - AMD 2210 (4 cores) - 396 MB/sec (official kernel)
> Lustre 1.6.5 - AMD 2210 (4 cores) - 169 MB/sec (official kernel)
> Lustre 1.6.5 - AMD 2210 (4 cores) - 165 MB/sec (patchless client)
>
> Lustre 1.6.4.3 - AMD 2354 (8 cores) - 725 MB/sec
> Lustre 1.6.5 - AMD 2354 (8 cores) - 246 MB/sec
Can you try disabling checksumming on the client:
lctl set_param osc.*.checksums=0
Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.
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