Hi, since a long time I'm looking for performance improvements for our ceph-cluster. The last expansion got better performance, because we add another node (with 12 OSDs). The storage utilization was after that 60%. Now we reach again 69% (the next nodes are waiting for installation) and the performance drop! OK, we also change the ceph-version from 0.72.x to firefly. But I'm wonder if there an relationship between utilization an performance?! The OSDs are xfs disks, but now i start to use ext4, because of the bad fragmentation on a xfs-filesystem (yes, I use the mountoption allocsize=4M allready). Has anybody the same effect? Udo _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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