On Mon, Sep 3, 2012 at 7:57 AM, Alex Glikson <glik...@il.ibm.com> wrote:
> Dear all, > > I wonder whether there is an easy way to configure how many cores > nova-compute is supposed to use (or alternatively refrain from using) for > provisioning of instances on a certain host, out of the total number of > cores on that host? E.g., if I know that there are other things running on > the host, and I want to dedicate some of the CPU capacity to them (such as > OpenStack services themselves). I am thinking of KVM right now, but the > general approach is probably platform-independent. Would appreciate your > insights. > > Thanks, > Alex > > P.S. trivial solution is to dedicate entire host(s) to those other > "things", and assume that nova-compute is running on hosts used *only* to > run VMs (and that nova-compute itself does not need much CPU cycles). but I > am looking for a more fine-grained approach. > > > ==================================================================================================== > Alex Glikson > Manager, Cloud Operating System Technologies, IBM Haifa Research Lab > http://w3.haifa.ibm.com/dept/stt/cloud_sys.html | > https://www.research.ibm.com/haifa/dept/stt/cloud_sys.shtml > Email: glik...@il.ibm.com | Phone: +972-4-8281085 | Mobile: > +972-54-6466667 | Fax: +972-4-8296112 > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack@lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > > Hi Alex, You might have a look at the max_cores setting in your nova.conf file. I think this will do what you have in mind. You can find some documentation on it here: http://docs.openstack.org/essex/openstack-compute/admin/content/compute-options-reference.html<http://docs.openstack.org/trunk/openstack-compute/admin/content/compute-options-reference.html> John
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