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
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