> Having your journals on the same disk causes all data to be written twice, i.e. > once to the journal and once to the > osd store. Notice that your tested throughput is slightly more than half your > expected maximum... But AFAIK OSD bench already considers journal writes. The disk can write about 100MB/s, so 55MB/s is already half speed! So that does not explain the behavior for me. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com