I would guess that the higher iops in ceph status are from iops calculated from replication. fio isn't aware of the backend replication iops, only what it's doing to the rbd
On Fri, Mar 2, 2018, 11:53 PM shadow_lin <shadow_...@163.com> wrote: > Hi list, > There is a client io section from the result of ceph -s. I found the value > of it is kinda confusing. > I am using fio to test rbd seq write performance with 4m block.The > throughput is about 2000MB/s and fio shows the iops is 500.But from the > ceph -s client io section the throughput is about 2000MB/s too but the iops > is not constantly,iops of the client io section keeps increasing from > 1000iops to 2000iops.And I found as the iops increased the throughput get > lower(about 10-20% ). > What the reason of the iops from ceph -s client io section to behave like > this? > > > 2018-03-03 > ------------------------------ > lin.yunfan > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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