Re: [Openstack] [nova-scheduler] Question
hi,see my blog post: https://www.ibm.com/developerworks/mydeveloperworks/blogs/e93514d3-c4f0-4aa0-8844-497f370090f5/entry/openstack_nova_scheduler_and_its_algorithm27?lang=enyou will have a good understand of the nova scheduler.enjoy it.-openstack-bounces+gongysh=cn.ibm@lists.launchpad.net wrote: -To: openstack@lists.launchpad.netFrom: Leander Bessa Sent by: openstack-bounces+gongysh=cn.ibm@lists.launchpad.netDate: 05/04/2012 09:01PMSubject: [Openstack] [nova-scheduler] QuestionHello,I have a question about nova-scheduler. I believe that, in order to have viable values supplied to the scheduler filters, it gathers the most recent state from each of the compute host. However, i've read through the documentation and haven't found any explicit statement which confirm my suspicious. Long story short, is this the behavior of nova-scheduler?Regards,Leander ___Mailing list: https://launchpad.net/~openstackPost to : openstack@lists.launchpad.netUnsubscribe : https://launchpad.net/~openstackMore help : https://help.launchpad.net/ListHelp ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] [nova-scheduler] Question
Yes. By default, once in two minutes host's capabilities are refreshed in nova-scheduler. These capabilities are then used along with data from DB to form current host capabilities. After that, resources used by each instance on the host are subtracted from it. The result containing the actual amounts for free resources is then passed to filters and cost functions. Kind regards, Yuriy. On Fri, May 4, 2012 at 5:01 PM, Leander Bessa wrote: > Hello, > > I have a question about nova-scheduler. I believe that, in order to have > viable values supplied to the scheduler filters, it gathers the most recent > state from each of the compute host. However, i've read through the > documentation and haven't found any explicit statement which confirm my > suspicious. > > Long story short, is this the behavior of nova-scheduler? > > Regards, > > Leander > > ___ > Mailing list: https://launchpad.net/~openstack > Post to : openstack@lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
