> Hi, > > > > The low points are all ~35Mbytes/sec and the high points are all > > > ~60Mbytes/sec. This is very reproducible. > > > > It occurred to me that just stopping the OSD's selectively would allow me to > > see if there was a change when one > > was ejected, but at no time was there a change to the graph... > > did you configure the pool with 3 copies and try to run the benchmark test > with one OSD only ? > Can you reproduce the values for each OSD ? I'll have to do that after hours. I'm not seeing this across all VM's though so I think it's a bit hit and miss (the graph is constant for that one VM though). What I did do was to shut down each OSD selectively, and there was no change to the graph. One thing I hadn't considered is that this VM is running on a physical host which has a different network set up - using LACP across 2 ports. I suspect that the combination of connections and the way LACP works means that sometimes the data goes across one network port (although I don't understand why I'm only getting 30mbytes/second per port in that case). I'm going to recable things at some point soon, so I'll revisit it after that. James _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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