On Fri, Jul 17, 2015 at 10:21 AM, Mark Nelson <mnelson@xxxxxxxxxx> wrote: > rados -p <pool> 30 bench write > > just to see how it handles 4MB object writes. Here's that, from the VM host: Total time run: 52.062639 Total writes made: 66 Write size: 4194304 Bandwidth (MB/sec): 5.071 Stddev Bandwidth: 11.6312 Max bandwidth (MB/sec): 80 Min bandwidth (MB/sec): 0 Average Latency: 12.436 Stddev Latency: 13.6272 Max latency: 51.6924 Min latency: 0.073353 Unfortunately I don't know much about how to parse this (other than 5MB/sec writes does match up with our best-case performance in the VM guest). > If rados bench is > also terribly slow, then you might want to start looking for evidence of IO > getting hung up on a specific disk or node. Thusfar, no evidence of that has presented itself. iostat looks good on every drive and the nodes are all equally loaded. Thanks! _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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