I agree. It would be awesome if someone could actually make it work. We had a totally broken version using the eventlet db pool 6 months ago.
Vish On Mar 1, 2012, at 4:20 PM, Joshua Harlow wrote: > Sad, especially since so much is using the database :-( > > On 3/1/12 2:43 PM, "Adam Young" <ayo...@redhat.com> wrote: > > On 03/01/2012 02:48 PM, Vishvananda Ishaya wrote: > > On Mar 1, 2012, at 9:39 AM, Adam Young wrote: > > > >> What would the drawbacks be? Probably the first thing people would look to > >> from Eventlet is performance. I don't have the hard numbers to compare > >> Eventlet to Apache HTTPD, but I do know that Apache is used in enough high > >> volume sites that I would not be overly concerned. The traffic in an > >> Openstack deployment to a Keystone server is going to be about two orders > >> of magnitude less than any other traffic, and is highly unlikely to be the > >> bottleneck. > > How did you arrive at this number? Every user has to hit keystone before > > making a request to any other service (unless they already have a token) > > and each service needs to authenticate that token. Any request that hits > > multiple services will hit keystone multiple times. Without caching, > > keystone is by far the busiest service in an openstack install. Caching > > should fix some of this, but I don't know that I would expect it to be two > > orders of magnitude less. > > > > Vish > > > Seeing as the SQL Alchemy code is blocking on each request, I suspect > that performance is now soundly *not* a reason to want to stick with > eventlet. My statement that Eventlet is performant is based on the > assumption that the benefits of using Greenthreads are realized. It > looks like that is not the case. > > _______________________________________________ > 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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