Robert, I don't have the exactly numbers, but during the real testing of real deployments I saw the impact of polling resource, this is one of the reason why we have to add quite big sleep() during polling in Rally to reduce amount of GET requests and avoid DDoS of OpenStack..
In any case it doesn't seem like hard task to collect the numbers. Best regards, Boris Pavlovic On Thu, Nov 5, 2015 at 3:56 AM, Robert Collins <robe...@robertcollins.net> wrote: > On 5 November 2015 at 04:42, Sean Dague <s...@dague.net> wrote: > > On 11/04/2015 10:13 AM, John Garbutt wrote: > > > I think longer term we probably need a dedicated event service in > > OpenStack. A few of us actually had an informal conversation about this > > during the Nova notifications session to figure out if there was a way > > to optimize the Searchlight path. Nearly everyone wants websockets, > > which is good. The problem is, that means you've got to anticipate > > 10,000+ open websockets as soon as we expose this. Which means the stack > > to deliver that sanely isn't just a bit of python code, it's also the > > highly optimized server underneath. > > So any decent epoll implementation should let us hit that without a > super optimised server - eventlet being in that category. I totally > get that we're going to expect thundering herds, but websockets isn't > new and the stacks we have - apache, eventlet - have been around long > enough to adjust to the rather different scaling pattern. > > So - lets not panic, get a proof of concept up somewhere and then run > an actual baseline test. If thats shockingly bad *then* lets panic. > > -Rob > > > -- > Robert Collins <rbtcoll...@hp.com> > Distinguished Technologist > HP Converged Cloud > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev >
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