Dear ceph users, I just set up a small cluster with two osds and 3 mon. (0.56.4-1~bpo70+1) OSDs are xfs (defaults mkfs options, mounted defaults,noatime) over lvm over hwraid. dd if=/dev/zero of=... bs=1M count=10000 conv=fdatasync on each ceph-* osd mounted partitions show 120MB/s on one server and 50MB/s on the second one. iperf between servers gives 580Mb/s I created a rbd, mapped it and did the same dd on it (direct to /dev/rbd/...). I get only 15MB/s :( (network interfaces shows ~ 120-150Mb/s, each server show ~30% IO wait) Any hint to increase the performance so it's not so far from non-ceph one? _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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