Hi! Sorry, I've found the reason of this strange results - rbd cache was enabled in local ceph.conf on client node, I used for testing. I remove it from config and get more sane results. On all tests direct=1 iodepth=32 ioengine=aio fio=seqwr bs=4k sync=0 cache=wb -> iops=31700,bw=126Mb/s, 75% lat < 10msec cache=no -> iops=1695, bw=7Mb/s, 95% lat < 28msec So, I've got 20x improvement on seq writes. Thank you, Alexander! Megov Igor CIO Yuterra _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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