|Subject:||Re: [Qemu-discuss] [Qemu-devel] iolimits for virtio-9p|
|Date:||Thu, 28 Apr 2016 11:45:41 +0200|
On Wed, 27 Apr 2016 16:39:58 +0200
Pradeep Kiruvale <address@hidden> wrote:
> On 27 April 2016 at 10:38, Alberto Garcia <address@hidden> wrote:
> > On Wed, Apr 27, 2016 at 09:29:02AM +0200, Pradeep Kiruvale wrote:
> > > Thanks for the reply. I am still in the early phase, I will let you
> > > know if any changes are needed for the APIs.
> > >
> > > We might also have to implement throttle-group.c for 9p devices, if
> > > we want to apply throttle for group of devices.
> > Fair enough, but again please note that:
> > - throttle-group.c is not meant to be generic, but it's tied to
> > BlockDriverState / BlockBackend.
> > - it is currently being rewritten:
> > https://lists.gnu.org/archive/html/qemu-block/2016-04/msg00645.html
> > If you can explain your use case with a bit more detail we can try to
> > see what can be done about it.
> We want to use virtio-9p for block io instead of virtio-blk-pci. But in
> case of
9p is mostly aimed at sharing files... why would you want to use it for
block io instead of a true block device ? And how would you do that ?
> virtio-9p we can just use fsdev devices, so we want to apply throttling
> on these devices and as of now the io throttling only possible with the
> -drive option.
> As a work around we are doing the throttling using cgroup. It has its own
Can you elaborate ?
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