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xen-devel
RE: [Xen-devel] [PATCH] linux/balloon: don't allow ballooningdowna domai
> It doesn't measure memory or total virtual commitment.
Hmm... in my experiments, it seems to do exactly that.
I wrote a simple "eatmem" program that uses a random
amount of memory (writing to the first byte in each page)
for a random amount of time (printing out the random values),
and watched Committed_AS in /proc/meminfo and it seems
to track well.
> -----Original Message-----
> From: Alan Cox [mailto:alan@xxxxxxxxxxxxxxxxxxx]
> Sent: Thursday, May 01, 2008 10:37 AM
> To: Keir Fraser
> Cc: dan.magenheimer@xxxxxxxxxx; Jan Beulich; Ky Srinivasan;
> xen-devel@xxxxxxxxxxxxxxxxxxx; KurtGarloff
> Subject: Re: [Xen-devel] [PATCH] linux/balloon: don't allow
> ballooningdowna domain below a reasonable limit
>
>
> > Can't vm_committed_space grow *bigger* than available
> memory when using
> > swap? It may indicate the 'static' demand for memory
>
> vm_committed_space measures address space commitment for anonymous
> objects. It doesn't measure memory or total virtual commitment.
>
> Alan
>
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