ioDrive - Disappointment

Can't seem to break 65,000 iops for 4k random reads.

That's only the equivalent of 260 15,000rpm SCSI drives...

Heh.

4 threads (or aysnchronous I/O with a queue depth of 4) is enough to push the card pretty much flat out, which is great, because that means it's actually possible to get those benchmark results in real-world applications (if you don't simply end up CPU bound).

Too many threads, or too small or large a block size, tend to make it choke a bit, and it performs better on pure reads or writes than on a mixture, but the worst-case results still deliver in excess of 5000 iops.

It might not quite deliver on the marketing gloss on all points, at least not without more tweaking than I've had time to do so far.  I have been able to hit 700MB/sec on random reads (with a 16k block size), which is phenomenal.

Once I've collated the benchmark data, I'll produce some pretty graphs and a more detailed (and structured) review.  But right now, if you have a moderately large database and need better disk performance, the ioDrive is the way to go.

Posted by: Pixy Misa at 05:18 PM | No Comments | Add Comment | Trackbacks (Suck)
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