Re: Windows Server 2008 VM performance

2009-06-03 Thread Andrew Theurer
Avi Kivity wrote: Andrew Theurer wrote: Is there a virtio_block driver to test? There is, but it isn't available yet. OK. Can I assume a better virtio_net driver is in the works as well? Can we find the root cause of the exits (is there a way to get stack dump or something that can

Re: Windows Server 2008 VM performance

2009-06-03 Thread Marcelo Tosatti
On Wed, Jun 03, 2009 at 09:21:16AM -0500, Andrew Theurer wrote: Avi Kivity wrote: Andrew Theurer wrote: Is there a virtio_block driver to test? There is, but it isn't available yet. OK. Can I assume a better virtio_net driver is in the works as well? Can we find the root cause of the

Windows Server 2008 VM performance

2009-06-02 Thread Andrew Theurer
I've been looking at how KVM handles windows guests, and I am a little concerned with the CPU overhead. My test case is as follows: I am running 4 instances of a J2EE benchmark. Each instance needs one application server and one DB server. 8 VMs in total are used. I have the same App and

Re: Windows Server 2008 VM performance

2009-06-02 Thread Avi Kivity
Andrew Theurer wrote: I've been looking at how KVM handles windows guests, and I am a little concerned with the CPU overhead. My test case is as follows: I am running 4 instances of a J2EE benchmark. Each instance needs one application server and one DB server. 8 VMs in total are used. I

Re: Windows Server 2008 VM performance

2009-06-02 Thread Javier Guerra
On Tue, Jun 2, 2009 at 4:38 PM, Avi Kivity a...@redhat.com wrote: Andrew Theurer wrote: P.S. Here is the qemu cmd line for the windows VMs: /usr/local/bin/qemu-system-x86_64 -name newcastle-xdbt01 -hda /dev/disk/by-id/scsi-3600a0b8f1eb1074f4a02b08a Use: -drive

Re: Windows Server 2008 VM performance

2009-06-02 Thread Avi Kivity
Javier Guerra wrote: On Tue, Jun 2, 2009 at 4:38 PM, Avi Kivity a...@redhat.com wrote: Andrew Theurer wrote: P.S. Here is the qemu cmd line for the windows VMs: /usr/local/bin/qemu-system-x86_64 -name newcastle-xdbt01 -hda /dev/disk/by-id/scsi-3600a0b8f1eb1074f4a02b08a

Re: Windows Server 2008 VM performance

2009-06-02 Thread Ryan Harper
* Avi Kivity a...@redhat.com [2009-06-02 16:49]: Javier Guerra wrote: On Tue, Jun 2, 2009 at 4:38 PM, Avi Kivity a...@redhat.com wrote: Andrew Theurer wrote: P.S. Here is the qemu cmd line for the windows VMs: /usr/local/bin/qemu-system-x86_64 -name newcastle-xdbt01 -hda