Hi,
I am now occasionally seeing a ceph statuses like this:
health HEALTH_WARN 2 requests are blocked > 32 sec
They aren't always present even though the cluster is still slow, but
they may be a clue....
Jeff
On Sat, Aug 17, 2013 at 02:32:47PM -0700, Sage Weil wrote:
> 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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