What's the benchmark?
-Greg
On Wednesday, May 22, 2013, Khanh. Nguyen Dang Quoc wrote:
> Dear all,****
>
> ** **
>
> now i faced one issue in ceph block device: performance degradation****
>
> ** **
>
> ceph version 0.61.2 (fea782543a844bb277ae94d3391788b76c5bee60)****
>
> ceph status ****
>
> ** **
>
> health HEALTH_OK****
>
> monmap e1: 2 mons at {a=49.213.67.204:6789/0,b=49.213.67.203:6789/0},
> election epoch 20, quorum 0,1 a,b****
>
> osdmap e53: 2 osds: 2 up, 2 in****
>
> pgmap v535: 576 pgs: 576 active+clean; 11086 MB data, 22350 MB used, 4437
> GB / 4459 GB avail****
>
> mdsmap e29: 1/1/1 up {0=a=up:active}, 1 up:standby****
>
> ** **
>
> I do benchmark with one osd, I receive the io speed is about 190MB/s****
>
> ** **
>
> But When i add more osd, replicate size =2 , the write performance
> degradated is about 90MB/s****
>
> ** **
>
> Follow the pratice, the write performance must be increated as adding more
> osd but I can't receive that. :(****
>
> anyone can you help me check what's wrong in config file or anything else?
> ****
>
> ** **
>
> Regards,****
>
> Khanh Nguyen****
>
--
Software Engineer #42 @ http://inktank.com | http://ceph.com
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