Tuesday, October 28, 2008

XBench: iSCSI

iSCSI on OpenFiler, on a u320 controller/drive, over GigE:
Results 13.04
System Info
Xbench Version 1.3
System Version 10.5.5 (9F33)
Physical RAM 3072 MB
Model MacBookPro4,1
Disk Test 13.04
Sequential 7.57
Uncached Write 51.02 31.33 MB/sec [4K blocks]
Uncached Write 47.33 26.78 MB/sec [256K blocks]
Uncached Read 2.20 0.64 MB/sec [4K blocks]
Uncached Read 30.68 15.42 MB/sec [256K blocks]
Random 47.08
Uncached Write 18.08 1.91 MB/sec [4K blocks]
Uncached Write 87.45 28.00 MB/sec [256K blocks]
Uncached Read 130.51 0.92 MB/sec [4K blocks]
Uncached Read 94.66 17.56 MB/sec [256K blocks]

That's with an MTU of 1500. I can't seem to turn on jumbo frames on the OpenFiler box. I would speculate that jumbo frames would help out with sequential reads/writes significantly. I think perhaps there's a BIOS setting to enable/disable jumbo support but it's too late to fuck around with it much more.

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