> All of which means that Mysql performance (looking at you binlog) may > still suffer due to lots of small block size sync writes.
Which begs the question: Anyone running a reasonable busy Mysql server on Ceph backed storage? We tried and it did not perform good enough. We have a small ceph cluster: 3 machines with 2 SSD journals and 10 spinning disks each. Using ceph trough kvm rbd we were seeing performance equal to about 1-2 spinning disks. Reading this thread it now looks a bit if there are inherent architecture + latency issues that would prevent it from performing great as a Mysql database store. I'd be interested in example setups where people are running busy databases on Ceph backed volumes. Cheers, Robert _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
