Was the db on a separate server or loopback? On 03/23/2012 05:26 PM, Mark Washenberger wrote: > > > "Johannes Erdfelt" <johan...@erdfelt.com> said: > >> >> MySQL isn't exactly slow and Nova doesn't have particularly large >> tables. It looks like the slowness is coming from the network and how >> many queries are being made. >> >> Avoiding joins would mean even more queries, which looks like it would >> slow it down even further. >> > > This is exactly what I saw in my profiling. More complex queries did > still seem to take longer than less complex ones, but it was a second > order effect compared to the overall volume of queries. > > I'm not sure that network was the culprit though, since my ping > roundtrip time was small relative to the wall time I measured for each > nova.db.api call. > > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack@lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp
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