On Jan 11, 2013, at 11:51 AM, Thomas Fjellstrom <thomas@xxxxxxxxxxxxx> wrote: > On Fri Jan 11, 2013, you wrote: >> OK fair enough, and as asked earlier, what's the chunk size? > > Ah, sorry, I missed that bit. I didn't tweak the chunk size, so I have the > default 512K. OK now that the subject has been sufficiently detoured… Benchmarking can perhaps help you isolate causes for problems you're having, but you haven't said what problems you're having. You're using benchmarking data to go looking for a problem. This is a GigE network to the NAS? If it's wireless, who cares, all of these array numbers are better than wireless bandwidth and latency. If it's GigE, all of your sequential read write numbers exceed the bandwidth of wired. So what's the problem? You want better random read writes? Rebuild the array with a 32KB or 64KB chunk size, knowing you may take a small hit on the larger sequential read/writes. Chris Murphy-- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
