Re: poor OSD performance using kernel 3.4

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Hi Mark,

Am 30.05.2012 16:56, schrieb Mark Nelson:
On 05/30/2012 09:53 AM, Stefan Priebe wrote:
Am 30.05.2012 16:49, schrieb Mark Nelson:
You could try setting up a pool with a replication level of 1 and see
how that does. It will be faster in any event, but it would be
interesting to see how much faster.
is there an easier way than modifying the crush map?
>
something like:
ceph osd pool create POOL [pg_num [pgp_num]]
then:
ceph osd pool set POOL size VALUE

With pool size 1 the writes are constant around 112MB/s:
http://pastebin.com/raw.php?i=haDPNTfQ

So has it something todo with the replication?

Stefan
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