Hi!
How much replication are you using? Also, what kind of disk is this?
Was the 191MB/s number to one of the drives on one of the servers? You
may also find that running concurrent dd's improve your numbers.
Thanks,
Mark
On 08/29/2013 12:44 PM, raj kumar 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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