Hi, we are just testing our new ceph cluster and to optimise our spinning disks we created an erasure coded pool and a SSD cache pool. We modified the crush map to make an sad pool as easy server contains 1 ssd drive and 5 spinning drives. Stress testing the cluster in terms of read performance is very nice pushing a little bit over 1.2GB/s however the write speed is pushing 200-300MB/s. All the SSDs are SAMSUNG 500GB EVO 850 PROs and can push 500MB/write speed, as tested with hdparm and dd. What can we tweak that the write speed increases as well over the network? We run everything over 10Ge The cache mode is set to write-back Any help would be greatly appreciated. Thank you and best regards //Florian _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
 |