Re: [Xen-devel] freemem-slack and large memory environments

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Wed, 2015-02-25 at 11:39 +0000, Stefano Stabellini wrote:
> On Tue, 24 Feb 2015, Ian Campbell wrote:
> > On Tue, 2015-02-24 at 16:06 +0000, Stefano Stabellini wrote:
> > > > Now that we autodetect the use of dom0_mem and set autoballooning
> > > > correctly perhaps we should just revert a39b5bc64?
> > > 
> > > We could do that and theoretically it makes perfect sense, but it would
> > > result in an even bigger waste of memory.
> > 
> > Would it, even though we now detect dom0_mem usage and do the right
> > thing? I thought a39b5bc64 was a workaround for autoballooning=1
> > in /etc/xen/xl.conf when dom0 was used.
> > 
> > 
> > > I think we should either introduce an hard upper limit for
> > > freemem-slack as Mike suggested, or remove freemem-slack altogether and
> > > properly fix any issues caused by lack of memory in the system (properly
> > > account memory usage).
> > > After all we are just at the beginning of the release cycle, it is the
> > > right time to do this.
> > 
> > I'm all in favour of someone doing this, similarly to
> > http://bugs.xenproject.org/xen/bug/23
> > 
> > Who is going to do that (either one)?
> 
> I am OK with sending the patch for both

Super, thanks.



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