Re: Swap usage with KVM

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On Sun, Jul 11, 2010 at 8:12 AM, Daniel Bareiro <daniel-listas@xxxxxxx> wrote:
> I have an installation with Debian GNU/Linux 5.0.4 amd64 with qemu-kvm
> 0.12.3 compiled with the source code obtained from the official site of
> KVM and Linux 2.6.32.12 compiled from source code of kernel.org. All
> this is installed on an HP Proliant DL380 G6 with two Xeon E5530
> quadcore processors and 16 GiB of RAM which has two VMs with the
> following configuration of memory:

Are you using virtio drivers in the VMs?

There was an issue with KVM-72 and virtio that leaks memory in the
host until all RAM and swap is used (inside the VMs, no swap is used).
 It was supposed to be fixed in KVM-80-something, though.

Perhaps something similar is happening again?  If you switch the disks
to scsi instead of virtio, does the problem go away?

We are running KVM-72 on Debian 5.0 and have run into this issue.
We'll be upgrading our hosts this month to fix this.

-- 
Freddie Cash
fjwcash@xxxxxxxxx
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