Re: performance questions

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On Sat, 17 Aug 2013, Jeff Moskow wrote:
> Hi,
> 
> 	When we rebuilt our ceph cluster, we opted to make our rbd storage 
> replication level 3 rather than the previously configured replication 
> level 2.
> 
> 	Things are MUCH slower (5 nodes, 13 osd's) than before even though 
> most of our I/O is read.  Is this to be expected? What are the 
> recommended ways of seeing who/what is consuming the largest amount of 
> disk/network bandwidth?

It really doesn't sound like the replica count is the source of the 
performance difference.  What else has changed?

sage
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