|
If it is because of replication then the iops in ceph status should be
always relatively stable and be the times of the replication size of the
fio's iops.
From what I have saw the iops in ceph status keeps increasing overtime
until it is relatively stable.
发件人：David Turner <drakonstein@xxxxxxxxx>
发送时间：2018-03-03 22:35
主题：Re: [ceph-users] how is iops from ceph -s client io
section caculated?
收件人："shadow_lin"<shadow_lin@xxxxxxx>
抄送："ceph-users"<ceph-users@xxxxxxxxxxxxxx>
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
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?
_______________________________________________
ceph-users
mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
|
_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
