Messages in this thread | | | Date | Wed, 19 Dec 2012 09:30:39 -0200 | From | Luiz Capitulino <> | Subject | Re: [RFC 3/3] virtio-balloon: add auto-ballooning support |
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On Tue, 18 Dec 2012 14:53:30 -0800 Anton Vorontsov <anton.vorontsov@linaro.org> wrote:
> Hello Luiz, > > On Tue, Dec 18, 2012 at 06:16:55PM -0200, Luiz Capitulino wrote: > > The auto-ballooning feature automatically performs balloon inflate > > or deflate based on host and guest memory pressure. This can help to > > avoid swapping or worse in both, host and guest. > > > > Auto-ballooning has a host and a guest part. The host performs > > automatic inflate by requesting the guest to inflate its balloon > > when the host is facing memory pressure. The guest performs > > automatic deflate when it's facing memory pressure itself. It's > > expected that auto-inflate and auto-deflate will balance each > > other over time. > > > > This commit implements the host side of auto-ballooning. > > > > To be notified of host memory pressure, this commit makes use of this > > kernel API proposal being discussed upstream: > > > > http://marc.info/?l=linux-mm&m=135513372205134&w=2 > > Wow, you're fast! And I'm glad that it works for you, so we have two > full-featured mempressure cgroup users already.
Thanks, although I think we need more testing to be sure this does what we want. I mean, the basic mechanics does work, but my testing has been very light so far.
> Even though it is a qemu patch, I think we should Cc linux-mm folks on it, > just to let them know the great news.
I'll do it next time.
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