Write and read with 2 hosts 4 osd : mkfs.ext4 /dev/rbd/kube/bench mount /dev/rbd/kube/bench /mnt/ dd if=/dev/zero of=test bs=8192k count=1000 oflag=direct 8388608000 bytes (8.4 GB, 7.8 GiB) copied, 117.541 s, 71.4 MB/s fio -ioengine=libaio -name=test -bs=4k -iodepth=32 -rw=randwrite -direct=1 -runtime=60 -filename=/dev/rbd/kube/bench WRITE: bw=45.3MiB/s (47.5MB/s), 45.3MiB/s-45.3MiB/s (47.5MB/s- 47.5MB/s), io=2718MiB (2850MB), run=60003-60003msec fio -ioengine=libaio -name=test -bs=4k -iodepth=32 -rw=randread -direct=1 -runtime=60 -filename=/dev/rbd/kube/bench READ: bw=187MiB/s (197MB/s), 187MiB/s-187MiB/s (197MB/s-197MB/s), io=10.0GiB (10.7GB), run=54636-54636msec pgbench before : 10 transaction per second pgbench after : 355 transaction per second So yes it's better. SSD are INTEL SSDSC2BB48 0370. Le samedi 17 août 2019 à 01:55 +0300, vitalif@xxxxxxxxxx a écrit : > > on a new ceph cluster with the same software and config (ansible) > > on > > the old hardware. 2 replica, 1 host, 4 osd. > > > > => 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 > > In fact I don't really believe in 184 MB/s random reads with Ceph > with 4 > OSDs, it's a very cool result if it's true. > > Does the "new cluster on the old hardware" consist of only 1 host? > Did > you test reads before you actually wrote anything into the image so > it > was empty and reads were fast because of that? > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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