Too slow data copying in ceph cluster

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Hi
I am trying to evaluate ceph cluster by using our actual workload.
I need almost 500G of data to be copied to ceph cluster in order
for doing workload test. But, 500G copying is taking a lot of time
(Coping started at 8.30AM PST time Thursday, 8th March). Its 
more than 12hrs and copying didn't completed. Can you please help
me to understand this delay ?

I have 2 MDS (one active, one standby), 3 monitors and 3 OSD's 
running. All 8 hosts are same OS/patch level running centos 5.6
with kernel 3.0.9 version.



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