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On 10/06/2012 02:26 PM, Seth Vidal
wrote:
When running a ftbfs run on both euca and openstack I started to see some pretty big differences in performance. CPU and mem were all the same or close enough so I decided to look at disk performance. A few thoughts - and bear in mind that i don't have an entirely optimal understanding of everything here ;) so I have no idea how much of this may apply... - AIUI gluster can be less than optimal for lots of small writes - esp. when doing replication - I don't know if you have looked at all of the translators, there are a few performance/write translators that can help improve this. - If this stuff is on a LAN that is slow/bogged down/not operating at Full Pipe Speedz then that could cause suckage (depending on ... things?? just recalling vague things in my brain... could be worth a shot.) Anyway, I'm forwarding on to the gluster folks (john mark, eco, jeff, kaleb) in the hopes they might be able to help fine-tune things; I know that john mark has been curious about how things are going anyhow. -Robyn
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