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xen-devel
Re: [Xen-devel] [PATCH] Make "xm mem-set" be lower bound ondomX-min-mem
On 20 May 2006, at 16:14, Puthiyaparambil, Aravindh wrote:
In lieu of the recent emails about ballooning, do you still want me to
look into making the balloon driver back off when it goes down the OOM
path? Or is it better for that too to be taken care of by some of the
higher level management tools?
The OS itself can tell best whether a given memory target is too
restrictive and will cause major problems. So hooking off the OOM paths
does make sense. The "2% test" is a suitable static check for now -- it
might make sense to keep it even when we do have a more dynamic
detection and backoff method. These in-kernel checks can complement
safety catches in higher-level management tools which might stop a user
from e.g. setting a target that is too low for Linux and prevent that
target from ever being passed to the guest.
-- Keir
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