Re: FW: cgroup blkio.weight working, but not for KVM guests

2012-10-25 Thread Avi Kivity
On 10/24/2012 08:10 AM, Stefan Hajnoczi wrote: > 1. For aio=native QEMU uses the Linux AIO API. I think this results in >kernel threads that process I/O on behalf of the userspace process. No, the request is submitted directly from io_submit(), and completion sets the eventfd from irq contex

Re: FW: cgroup blkio.weight working, but not for KVM guests

2012-10-23 Thread Stefan Hajnoczi
On Tue, Oct 23, 2012 at 04:48:13PM -0600, Ben Clay wrote: > Since this is not an issue, I guess another source of problems could be that > all the virtio threads attached to this domain are not being placed within > the cgroup. I will look through libvirt to see if they're setting the > guest's pr

RE: FW: cgroup blkio.weight working, but not for KVM guests

2012-10-23 Thread Ben Clay
Re: FW: cgroup blkio.weight working, but not for KVM guests On Mon, Oct 22, 2012 at 07:36:34AM -0600, Ben Clay wrote: > Forwarding this to the KVM general list.  I doubt you folks can help > me with libvirt, but I was wondering if there’s some way to verify if > the cache=none paramete

Re: FW: cgroup blkio.weight working, but not for KVM guests

2012-10-23 Thread Stefan Hajnoczi
On Mon, Oct 22, 2012 at 07:36:34AM -0600, Ben Clay wrote: > Forwarding this to the KVM general list.  I doubt you folks can help me with > libvirt, but I was wondering if there’s some way to verify if the cache=none > parameter is being respected for my KVM guest’s disk image, or if there are > any

FW: cgroup blkio.weight working, but not for KVM guests

2012-10-22 Thread Ben Clay
Forwarding this to the KVM general list.  I doubt you folks can help me with libvirt, but I was wondering if there’s some way to verify if the cache=none parameter is being respected for my KVM guest’s disk image, or if there are any other configuration/debug steps appropriate for KVM + virtio + cg