Thanks guys for your insightful replies. I'm studying them. If I've got anything, I'll get back to you as soon as possible.
Have a nice day! Cheers, Howard On Wed, Oct 10, 2012 at 7:25 PM, Sandy Walsh <sandy.wa...@rackspace.com>wrote: > Hey Howard, > > Queues are generally in memory, but you may turn on persistent (disk) > queues in your environment. So that's your limitation. Having rabbitmq on a > different server is a good idea. > > Also, Queues are only used for control, not user data, so they shouldn't > be that big of a burden. Having a queue-based architecture adds some > complexity for synchronization, but their benefit of giving us > burst-handling capabilities far outweigh that (imho). > > If your queues are filling up, you may: > 1. need beefier machines processing the offending queues (or rabbit server) > 2. need to add more worker nodes (more network, more scheduler, though > more compute isn't appropriate) > 3. think about clustering rabbit > > Notifications are perhaps the chattiest queues in the system, so make sure > you have suitable workers there (if you have notifications turned on) > > This might help you understand the flow through the queues a little more? > > http://www.sandywalsh.com/2012/04/openstack-nova-internals-pt1-overview.html > > http://www.sandywalsh.com/2012/09/openstack-nova-internals-pt2-services.html > > Cheers, > Sandy > > > From: > openstack-bounces+sandy.walsh=rackspace....@lists.launchpad.net[openstack-bounces+sandy.walsh= > rackspace....@lists.launchpad.net] on behalf of Hao Wang [ > hao.1.w...@gmail.com] > Sent: Tuesday, October 09, 2012 11:49 PM > To: openstack@lists.launchpad.net > Subject: [Openstack] Bottleneck of message queue > > > Hi guys, > > I am trying to figure out how the internal interaction processes within > different modules of OpenStack. Frankly speaking, while I'm reading the > source codes I lost myself and have to jump out again to look at OpenStack > from out of the box. I don't know if anybody has the similiar feeling with > me. Is there any picture I can follow to see the message flows? > > OpenStack is based on message queue to ensure the expansion easy. Here > come my questions. Does anybody know the capacity of message queue? Would > the capacity be a bottleneck of the platform? > > Thanks, > Howard > > > >
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