[Lustre-discuss] Performance drop (1.6.5 vs 1.6.4.3, OFED 1.2)?

[Andrei Maslennikov]

Some fresh numbers:

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
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