In addition to the rate limiting changes, you can also run multiple copies of nova-api on different ports and put a load balancer (like ha-proxy) in front. You may have to set up your proxy to add an X-Forwarded-For header and specify the --use_forwarded_for flag to get things like metadata to work.
Vish On Dec 21, 2011, at 4:38 PM, Huang Zhiteng wrote: > I have a relevant question about API throughput. I'm using Diablo release > version and I found out that there's only one process of nova-api to handle > all API requests from even different users. That results very low (<10) API > throughput (definition: API requests handled per second). Similar symptom > was observed back in Cactus release. > > Is there anyway to configure API service to run in multi-threaded mode so > that it can utilize multi-core hardware? I'd really appreciate if anyone can > also shed some light on why Nova API was designed to work in this way. Thank > you in advance. > > On Tue, Dec 20, 2011 at 3:28 AM, Day, Phil <[email protected]> wrote: > Hi Folks, > > > > Is there a file that can be used to configure the API rate limits for the OS > API on a per user basis ? > > > > I can see where the default values are set in the code, but it looks as if > there should be a less brutal configuration mechanism to go along with this ? > > > > Thanks > > Phil > > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : [email protected] > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > > > > > -- > Regards > Huang Zhiteng > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : [email protected] > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp
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