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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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