Re: [ovirt-users] oVirt hook to manage physical CPU pool, and automatically pin CPUs without overlap on the host

Please look at the NUMA feature to enable you to pin a VM to a CPU group. Yaniv Dary Technical Product Manager Red Hat Israel Ltd. 34 Jerusalem Road Building A, 4th floor Ra'anana, Israel 4350109 Tel : +972 (9) 7692306 8272306 Email: ydary(a)redhat.com IRC : ydary On Mon, Feb 1, 2016 at 9:21 AM, David Jorm <djorm(a)iix.net&gt; wrote: > Hi All > > Thanks for the help that people have recently provided on this list. > I'm running into another edge case that, as far as I can see, does not > have a native solution within oVirt. I have a use case where every VM > must have 4 pinned vCPUs, and these must map 1:1 to physical CPUs so > that there are never two VMs contending for the same physical cores. I > already have code in place that ensures a VM will not be created or > started if n/4 VMs are already running on the target host, where n is > the number of physical cores. What I need now is to ensure that > pinning is managed so that each physical core maps 1:1 to vCPUs. > > Would it be possible to manage the pool of physical cores in a local > DB, and implement a VDSM hook similar to the example on this page? > > http://www.ovirt.org/VDSM-Hooks > > Or would there be a preferable solution? > > Thanks > David > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users >