se/fix issues on a version
> which will be EOL in 3 weeks...
>
>
> --
> Mit freundlichen Gruessen / Best regards
>
> Oliver Dzombic
>
> Am 07.12.2015 um 15:26 schrieb Libin Wu:
>> Btw, my ceph version is 0.80.11
>>
>> 2015-12-07 21:45 GMT+08:00 Libin Wu :
>>&
Btw, my ceph version is 0.80.11
2015-12-07 21:45 GMT+08:00 Libin Wu :
> Hi, cephers
>
> I'm doing the performance test of ceph when recovering. The scene is simple:
> 1. run fio on 6 krbd device
> 2. stop one OSD for 10 seconds
> 3. start that OSD
>
> However, when th
Hi, cephers
I'm doing the performance test of ceph when recovering. The scene is simple:
1. run fio on 6 krbd device
2. stop one OSD for 10 seconds
3. start that OSD
However, when the OSD up and start recovering, the performance of fio
drop down from 9k to 1k for about 20 seconds. At the same tii
Hi, all
As my understand, command "ceph daemon osd.x perf dump objecters" should
output the perf data of osdc(librados). But when i use this command,
why all those values are zero expcept map_epoch and map_inc. Follow is
the result(It has fio test with rbd ioengine on the cluster):
$ sudo ceph d
Hi,
My environment has 32 core CPU, and 256GB memory. The SSD can get
30k write IOPS when use directIO.
Finally, i figure out the problem, after change the scheduler of SSD to
noop, the
performance improve obviously.
Please forgive me, i don't realize IO scheduler could impact performance so
much
