I think it's also important to note _how_ one measure performance (which is black magic at the best of times).
I personally like to see averages since doing #iostat -xnz 10 doesn't tell me anything really. Since zfs likes to "bundle and flush" I want my (very expensive ;) Sun storage to give me all it's got. I'm not too concerned if a 5 second flush gives the disk subsystem a good workout, but when I/O utilization is around 100% with services times of 30+ ms over a period of a hour... then I might want to wheel the drawing board into the architects office. My 2c :)
> The only issue is when using iostat commands the bursts make it a little harder to gauge performance. Is it safe to assume that if those bursts were to reach the upper performance limit that it would spread the writes out a bit more?
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