on a new ceph cluster with the same software and config (ansible) on the old hardware. 2 replica, 1 host, 4 osd. RBD fio -ioengine=rbd -name=test -bs=4k -iodepth=32 -rw=randread -runtime=60 -pool=kube -rbdname=bench READ: bw=120MiB/s (126MB/s), 120MiB/s-120MiB/s (126MB/s-126MB/s), io=7189MiB (7538MB), run=60001-60001msec fio -ioengine=rbd -name=test -bs=4k -iodepth=32 -rw=randwrite -runtime=60 -pool=kube -rbdname=bench WRITE: bw=42.0MiB/s (44.1MB/s), 42.0MiB/s-42.0MiB/s (44.1MB/s-44.1MB/s), io=2522MiB (2645MB), run=60004-60004msec MAPPED RBD fio -ioengine=libaio -name=test -bs=4k -iodepth=32 -rw=randread -direct=1 -runtime=60 -filename=/dev/rbd/kube/bench READ: bw=184MiB/s (193MB/s), 184MiB/s-184MiB/s (193MB/s-193MB/s), io=10.0GiB (10.7GB), run=55613-55613msec fio -ioengine=libaio -name=test -bs=4k -iodepth=32 -rw=randwrite -direct=1 -runtime=60 -filename=/dev/rbd/kube/bench WRITE: bw=46.9MiB/s (49.2MB/s), 46.9MiB/s-46.9MiB/s (49.2MB/s-49.2MB/s), io=2814MiB (2950MB), run=60002-60002msec looks much better old the old one on the cluster with the new hardware. 2 replica 3 host 6 osd. fio -ioengine=libaio -name=test -bs=4k -iodepth=32 -rw=randread -direct=1 -runtime=60 -filename=/dev/rbd/kube/bench READ: bw=31.1MiB/s (32.6MB/s), 31.1MiB/s-31.1MiB/s (32.6MB/s-32.6MB/s), io=1866MiB (1957MB), run=60010-60010msec fio -ioengine=libaio -name=test -bs=4k -iodepth=32 -rw=randwrite -direct=1 -runtime=60 -filename=/dev/rbd/kube/bench WRITE: bw=10.5MiB/s (11.0MB/s), 10.5MiB/s-10.5MiB/s (11.0MB/s-11.0MB/s), io=631MiB (662MB), run=60021-60021msec => New hardware : 32.6MB/s READ / 10.5MiB WRITE => Old hardware : 184MiB/s READ / 46.9MiB WRITE No discussion ? I suppose I will keep the old hardware. What do you think ? :D Le vendredi 16 août 2019 à 21:17 +0200, Olivier AUDRY a écrit :
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