How to interpret IOZone results?

Posted by homer5439 on Server Fault See other posts from Server Fault or by homer5439
Published on 2011-02-04T13:59:34Z Indexed on 2011/02/04 15:27 UTC
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Filed under:

linux

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Performance

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nas

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lvm

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disk

Here are the resuts of running IOZone on an ext3 filesystem on an LVM volume residing on a SAN LUN (it was ran with 5 parallel processes).

"Throughput report Y-axis is type of test X-axis is number of processes" "Record size = 4 Kbytes " "Output is in Kbytes/sec"

" Initial write " 81628.55

" Rewrite " 83354.72

" Read " 115595.02

" Re-read " 119306.09

" Reverse Read " 47684.20

" Stride read " 10011.09

" Random read " 16751.27

" Mixed workload " 5659.77

" Random write " 1661.85

" Pwrite " 36030.83

Now this is all nice and dandy, but my question is: how do I know whether the values are as good as they could be or there is something to tweak (and if so, what?)

The actual usage I will have for that Logical Volume is to act as virtual disk for a VM.

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