On 03/21/2014 03:04 PM, Dmitry Ukov wrote: > Core and Disk filters should be enabled (they are disabled by default) > in order to avoid compute node oveloading > - cpu_allocation_ratio=1.0 - was customer requirement. I think 16.0 is > way to big over commit ratio (potentially 16 vms on 1 core). I would say > 2.0 or 3.0 will be reasonable here. > - disk_allocation_ratio=1.0 - it is unsafe to over commit disk > - ram_allocation_ratio=1.0 - this was customer requirement. Actually we > can use default value here. (AFAIR default is 1.5 ) > - ram_weight_multiplier=0.0 and scheduler_host_subset_size=30 will help > us to get random VMs distribution if compute nodes significantly differ > from each other in terms of total RAM amount
Thank you, that makes sense. I vote for enable these ones (leaving the ram_allocation_ratio defaults) for Fuel nova manifests for Puppet. That do you think? > > > > On Thu, Mar 20, 2014 at 2:58 PM, Bogdan Dobrelya <[email protected] > <mailto:[email protected]>> wrote: > > On 03/20/2014 08:47 AM, Mike Scherbakov wrote: > > Hi Dmitry, > > I was running through bp created by > > you: > https://blueprints.launchpad.net/fuel/+spec/scheduler-config-improvements. > > > > Interesting, why CPU overcommitment defaults ( > > https://github.com/openstack/nova/blob/master/etc/nova/nova.conf.sample#L1759 > ) are so 'bad' to being changed so drastically 16->1? > > > I'm wondering whether this config will work fine for every > installation > > we do with Fuel.. what are the possible limitations / corner cases? > > > > Thanks, > > -- > > Mike Scherbakov > > #mihgen > > > > > > > -- > Best regards, > Bogdan Dobrelya, > Skype #bogdando_at_yahoo.com <http://bogdando_at_yahoo.com> > Irc #bogdando > > > > > -- > Kind regards > Dmitry Ukov > IT Engineer > Mirantis, Inc. > -- Best regards, Bogdan Dobrelya, Skype #bogdando_at_yahoo.com Irc #bogdando -- Mailing list: https://launchpad.net/~fuel-dev Post to : [email protected] Unsubscribe : https://launchpad.net/~fuel-dev More help : https://help.launchpad.net/ListHelp
