Are you using multi_host setup? If not, as Vish suggested, that will alleviate much of the problem.
Best, -jay On 02/19/2013 04:09 AM, gtt116 wrote: > 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. > > 于 2013年02月19日 16:54, Diego Parrilla Santamaría 写道: >> 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/> | * [email protected] >> <mailto:[email protected]>**** | +34 649 94 43 29 >> | skype:diegoparrilla* >> * <http://www.stackops.com/> >> * >> >> **** >> >> * >> >> >> >> On Tue, Feb 19, 2013 at 9:35 AM, gtt116 <[email protected] >> <mailto:[email protected]>> 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 : [email protected] >> <mailto:[email protected]> >> Unsubscribe : https://launchpad.net/~openstack >> <https://launchpad.net/%7Eopenstack> >> More help : https://help.launchpad.net/ListHelp >> >> > > > -- > best regards, > gtt > > > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : [email protected] > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : [email protected] Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
