[Qemu-devel] Balloon Driver : Observation

2013-06-24 Thread Saptarshi Sen
Hi, I am observing a strange phenomenon with balloon using KVM as hypervisor. I set balloon value to an arbitratrilylow value so that the guest system is out of memory. The VM freezes therafter. But if Iquery the balloon status through qmp-shell, the qmp interface interacts with the balloon

Re: [Qemu-devel] Balloon Driver : Observation

2013-06-24 Thread Anthony Liguori
On Mon, Jun 24, 2013 at 8:31 PM, Saptarshi Sen saptarshi@gmail.com wrote: Hi, I am observing a strange phenomenon with balloon using KVM as hypervisor. I set balloon value to an arbitratrilylow value so that the guest system is out of memory. The VM freezes therafter. But if Iquery the

Re: [Qemu-devel] balloon driver on winxp guest start failed

2011-10-27 Thread hkran
On 10/17/2011 08:55 PM, Vadim Rozenfeld wrote: On Fri, 2011-10-14 at 17:49 +0800, hkran wrote: On 10/14/2011 04:55 AM, Vadim Rozenfeld wrote: On Thu, 2011-10-13 at 15:47 +0100, Stefan Hajnoczi wrote: On Thu, Oct 13, 2011 at 5:00 AM, hkranhk...@vnet.linux.ibm.com wrote: On 10/12/2011 07:09

Re: [Qemu-devel] balloon driver on winxp guest start failed

2011-10-20 Thread hkran
On 10/17/2011 08:55 PM, Vadim Rozenfeld wrote: On Fri, 2011-10-14 at 17:49 +0800, hkran wrote: On 10/14/2011 04:55 AM, Vadim Rozenfeld wrote: On Thu, 2011-10-13 at 15:47 +0100, Stefan Hajnoczi wrote: On Thu, Oct 13, 2011 at 5:00 AM, hkranhk...@vnet.linux.ibm.com wrote: On 10/12/2011 07:09

Re: [Qemu-devel] balloon driver on winxp guest start failed

2011-10-17 Thread Vadim Rozenfeld
On Fri, 2011-10-14 at 17:49 +0800, hkran wrote: On 10/14/2011 04:55 AM, Vadim Rozenfeld wrote: On Thu, 2011-10-13 at 15:47 +0100, Stefan Hajnoczi wrote: On Thu, Oct 13, 2011 at 5:00 AM, hkranhk...@vnet.linux.ibm.com wrote: On 10/12/2011 07:09 PM, hkran wrote: I used balloon driver for

Re: [Qemu-devel] balloon driver on winxp guest start failed

2011-10-14 Thread hkran
On 10/14/2011 04:55 AM, Vadim Rozenfeld wrote: On Thu, 2011-10-13 at 15:47 +0100, Stefan Hajnoczi wrote: On Thu, Oct 13, 2011 at 5:00 AM, hkranhk...@vnet.linux.ibm.com wrote: On 10/12/2011 07:09 PM, hkran wrote: I used balloon driver for windows virtio-win-0.1-15.iso (from

Re: [Qemu-devel] balloon driver on winxp guest start failed

2011-10-13 Thread Stefan Hajnoczi
On Thu, Oct 13, 2011 at 5:00 AM, hkran hk...@vnet.linux.ibm.com wrote: On 10/12/2011 07:09 PM, hkran wrote: I used balloon driver for windows  virtio-win-0.1-15.iso (from http://alt.fedoraproject.org/pub/alt/virtio-win/latest/images/bin/) following the install guard , I installed the balloon

Re: [Qemu-devel] balloon driver on winxp guest start failed

2011-10-13 Thread Vadim Rozenfeld
On Thu, 2011-10-13 at 15:47 +0100, Stefan Hajnoczi wrote: On Thu, Oct 13, 2011 at 5:00 AM, hkran hk...@vnet.linux.ibm.com wrote: On 10/12/2011 07:09 PM, hkran wrote: I used balloon driver for windows virtio-win-0.1-15.iso (from

[Qemu-devel] balloon driver on winxp guest start failed

2011-10-12 Thread hkran
Hi, I used balloon driver for windows virtio-win-0.1-15.iso (from http://alt.fedoraproject.org/pub/alt/virtio-win/latest/images/bin/) following the install guard , I installed the balloon driver like this: devcon.exe install d:\wxp\x86\balloon.inf PCI\VEN_1AF4DEV_1002SUBSYS_00051AF4REV_00

Re: [Qemu-devel] balloon driver on winxp guest start failed

2011-10-12 Thread hkran
On 10/12/2011 07:09 PM, hkran wrote: Hi, I used balloon driver for windows virtio-win-0.1-15.iso (from http://alt.fedoraproject.org/pub/alt/virtio-win/latest/images/bin/) following the install guard , I installed the balloon driver like this: devcon.exe install d:\wxp\x86\balloon.inf

Re: [Qemu-devel] balloon driver

2006-07-09 Thread Mark Williamson
Worse, the guest might decide to swap out a page that's already swapped in by the host, forcing it to be read in again only to be immediately written out to disk by the guest :-( ...unless the guest's disk I/O is with simulated DMA or recognisable block-copy instruction sequences, and

Re: [Qemu-devel] balloon driver

2006-07-08 Thread Eric L
On 7/5/06, Paul Brook [EMAIL PROTECTED] wrote: 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

Re: [Qemu-devel] balloon driver

2006-07-08 Thread Mark Williamson
It seems the point of the balloon driver is to avoid forcing the host to swap. For example, suppose I start a new guest OS. I check the memory usage on the host and everything looks pretty good, maybe 30MB used. Then suppose I run a recursive grep command in a Linux source tree on the

Re: [Qemu-devel] balloon driver

2006-07-08 Thread Jamie Lokier
Mark Williamson wrote: Even if the guest has to swap, the reasoning is that the guest is in a much better position to figure out what to swap than if the host were forced to. Worse, the guest might decide to swap out a page that's already swapped in by the host, forcing it to be read in

Re: [Qemu-devel] balloon driver

2006-07-05 Thread Paul Brook
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.