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Re: [Xen-devel] [PATCH] RFC: initial libxl support for xenpaging

On Mon, 2012-02-20 at 10:44 +0000, George Dunlap wrote:
> On Fri, Feb 17, 2012 at 4:43 PM, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
> > My point is that the memory knobs should be exposed to the user of xl as
> > semantically meaningful options without the need to refer to "the paging
> > target" or "the balloon target" which is why there should not IMHO be
> > "xl commands to adjust just ballooning and/or paging".
> I disagree with this.  I agree completely that the default interface
> should just be, "How much memory is my VM using", and balloon drivers
> or paging shouldn't have to be of concern to them.  But there are
> times when admins will need to dig in deeper and play with specific
> values.  We should make the common case simple, and the complicated
> case possible.

yes, that seems reasonable. My main concern was that we appeared to be
about to expose the complicated case as the primary interface that we
would recommend people use in the common case / by default. I guess
that's what I was really trying to say when I said these advanced
options should be debug only (i.e. for debug read "advanced" too).


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