Hi Diego Thanks for you reply. How many hosts do you have? I have 4 hosts. And in this bug, https://bugs.launchpad.net/nova/+bug/1094226, The N is 20. In my environment N is about 16.
I found that nova-network is too busy to deal with so many rpc request at the same time. The Rabbitmq is strong enough in the scenario. ? 2013?02?19? 16:54, Diego Parrilla Santamaría ??: > Hi gtt, > > what does it mean for you 'lots of instance simultaneously'? 100, > 1000, 10000, more? > > We have launched >100 (but less than <1000) simultaneously without any > issue. Rabbit running in a multicore with several gigs of RAM with out > of the box configuration. > > Cheers > Diego > -- > Diego Parrilla > <http://www.stackops.com/>*CEO* > **www.stackops.com* > <http://www.stackops.com/> | * diego.parri...@stackops.com > <mailto:diego.parri...@stackops.com>**** | +34 649 94 43 29 > | skype:diegoparrilla* > * <http://www.stackops.com/> > * > > **** > > * > > > > On Tue, Feb 19, 2013 at 9:35 AM, gtt116 <gtt...@126.com > <mailto:gtt...@126.com>> wrote: > > Hi all, > > When create lots of instance simultaneously, there will be lots of > instance in ERROR state. And most of them are caused by network > rpc request timeout. This result is not so graceful. > > I think it will be better if scheduler keep a queue of creating > request. when he find all the hosts are busy > enough(compute_node.current_workload reach some value), stop cast > the request to host temporarily, until he found some host free > enough. In this way, we can make sure booting lots of instances > simultaneously results in active instances rather than lots of > ERROR instance. but will cause a small weak point, if the top > value of current_workload small enough, create instance processing > will be slow. > > Do you have another quick fix? > > Thanks, > > -- > best regards, > gtt > > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > <https://launchpad.net/%7Eopenstack> > Post to : openstack@lists.launchpad.net > <mailto:openstack@lists.launchpad.net> > Unsubscribe : https://launchpad.net/~openstack > <https://launchpad.net/%7Eopenstack> > More help : https://help.launchpad.net/ListHelp > > -- best regards, gtt
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