Hi, I just installed jewel on a small cluster of 3 machines with 4 SSDs each. I created 8 RBD images, and use a single client, with 8 threads, to do random writes (using FIO with RBD engine) on the images ( 1 thread per image). The cluster has 3X replication and 10G cluster and client networks. FIO prints the aggregate IOPS every second for the cluster. Before Jewel, I get roughtly 10K IOPS. It was up and down, but still kept going. Now I see IOPS that go to 13-15K, but then it drops, and eventually drops to ZERO for several seconds, and then starts back up again.
What am I missing? Thanks Pankaj
_______________________________________________ ceph-users mailing list [email protected] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
