[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [PATCH 1/8] netback: don't bind kthread to cpu

On Mon, 2013-03-04 at 20:51 +0000, Konrad Rzeszutek Wilk wrote:
> On Fri, Feb 15, 2013 at 04:00:02PM +0000, Wei Liu wrote:
> > The initialization process makes an assumption that the online cpus are
> > numbered from 0 to xen_netbk_group_nr-1,  which is not always true.
> And xen_netbk_group_nr is num_online_cpus()?


> So under what conditions does this change? Is this when the CPU hotplug
> is involved and the CPUs go offline? In which case should there be a

Yes, the hotplug path.

> CPU hotplug notifier to re-bind the workers are appropiate?
> > 
> > As we only need a pool of worker threads, simply don't bind them to specific
> > cpus.
> OK. Is there another method of doing this? Are there patches to make the 
> thread
> try to be vCPU->guest affinite?

No, not at the moment.


Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.