I've not changed any default configuration of ceph-deploy. I just added public/cluster network to config. rep size is 2.
it's a sata disk.
Yes. 191MB/s is from physical local disk.
As you said running concurrent dd gives 94.1MB/s and 135 MB/s. So is it normal? I'm using ver version 0.67.1.
On Thu, Aug 29, 2013 at 11:14 PM, raj kumar <rajkumar600003@xxxxxxxxx> wrote:
I've setup ceph cluster and using rbd to check the performance. Used ceph-deploy for deployment./dev/sdb - is data disk, /dev/sda4 - is journal. I've 2 servers running 2 osds and I 've 3 monitors running from vmware virtual machine. which has sufficient RAM/CPU.servers are dual core and i've 2 networks of 1Gbps(for osd dedicated 1gb network).There is a huge different when running "
dd if=/dev/zero of=a1.temp bs=1k count=1023000". Gives only 22.5MB/s. where as vmware guest gives 92MB/s and physical gives 191 MB/s.
I'm planning to use ceph for cloud and also for storing large image files. please let me know how to tune ceph to get an optimal performance.
-Raj
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