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2009 Apr 09
8
ZIL SSD performance testing... -IOzone works great, others not so great
...one, the SSD standalone, and the fireball with the SSD as a log device. My test command is: time iozone -i 0 -a -y 64 -q 1024 -g 32M Then I check the time it takes to complete this operation in each scenario: Fireball alone - 2m15s (told you it was crappy) SSD alone - 0m3s Fireball + SSD zil - 0m28s This looks great! Watching ''zpool iostat-v'' during this test further proves that the ZIL device is doing the brunt of the heavy lifting during this test. If I can get these kind of write results in my prod environment, I would be one happy camper. However, ANY other test I...