[ceph-users] Re: Mapped rbd is very slow

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?