Hi Ma,
On 4/16/2018 11:23 AM, Sitsofe Wheeler wrote:
(CC'ing Igor)
On 16 April 2018 at 07:56, 马少楠 <shaonan.ma@xxxxxxxxx> wrote:
Hi List,
I am a beginner, and now I am testing performance of rados of ceph. I
use the ioengine of rados but when I used the example in Github, the
ceph pool is empty as following:
data:
pools: 1 pools, 100 pgs
objects: 0 objects, 0 bytes
usage: 72611 MB used, 349 TB / 349 TB avail
pgs: 100 active+clean
$ ceph df
GLOBAL:
SIZE AVAIL RAW USED %RAW USED
349T 349T 72611M 0.02
POOLS:
NAME ID USED %USED MAX AVAIL OBJECTS
ecpool 1 0 0 221T 0
And my configure file rados.job is as following:
[global]
ioengine=rados
clientname=admin
pool=ecpool
busy_poll=0
rw=write
bs=4M
[job1]
size=100G
io_size=100G
iodepth=2048
I want to know whether the result that fio got could be considered
effective without any ojbect been written in the pool.
RADOS plugin performs a cleanup on completion and removes all the
written objects.
You can check more detailed Ceph reports to see amount of data written
to cluster, please try
ceph df detail
or
rados df
And I want to ask what I need to do if I want to test parallel reading
and write of rados. Should I create N pools in ceph and create N jobs
in fio configure file?
You can probably create multiple jobs operating on a single pool as well.
Or even try R/W mode within a single job (rw = rw or rw = randrw).
Thanks.
Regards,
Shaonan Ma
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