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Re: [Qemu-devel] balloon driver
From: |
Paul Brook |
Subject: |
Re: [Qemu-devel] balloon driver |
Date: |
Wed, 5 Jul 2006 15:52:11 +0100 |
User-agent: |
KMail/1.9.1 |
On Wednesday 05 July 2006 03:58, Eric L wrote:
> I've been playing around with QEMU the past few days and have been
> quite impressed. One thing I wondered about: it seems that most of
> the other virtualization schemes have some sort of balloon driver to
> reclaim unused (cached) guest memory. (VMWare, Xen and I think user
> mode linux has something too). It seems like a pretty good idea to
> me, but from my searching, it would appear that QEMU does not have
> anything similar. Is this correct? If so, is there a reason why?
Partly because qemu is just a normal user application. It can be swapped out
by the host OS just like any other process. Adding a few Gb of extra swap and
letting the host OS figure it out should get you 90% of the benefit.
Paul