On 2019-07-16T19:27:32, " Drobyshevskiy, Vladimir " <vlad@xxxxxxxxxx> wrote: > This is a replicated pool with size = 3. > Is it possible to check this anyhow? ping shows average latency ~0.147 ms > which is pretty high for IB but might be reasonable (IPoIB). This means that, barring any other overhead, you're limited to a maximum of ~2200 IOPS per single thread. (Data needs to go to the primary, then to each of the two replica, and back; that is about 3 hops at least. This assumes 0 time needed to transmit the data, CPU/storage device processing, etc.) And with so few devices, you're going to eventually and quickly get serialized by the few primary OSDs. -- SUSE Linux GmbH, GF: Felix Imendörffer, Mary Higgins, Sri Rasiah, HRB 21284 (AG Nürnberg) "Architects should open possibilities and not determine everything." (Ueli Zbinden) _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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