On Tue, Oct 30, 2012 at 8:29 AM, Michael S. Tsirkin wrote:
> On Tue, Sep 11, 2012 at 12:10:18AM +0300, Michael S. Tsirkin wrote:
>> > On the plus side, having an exit taken here on each page turns out to
>> > be relatively cheap, as the vmexit from the page fault should be
>> > faster to process a
On Tue, Sep 11, 2012 at 12:10:18AM +0300, Michael S. Tsirkin wrote:
> > On the plus side, having an exit taken here on each page turns out to
> > be relatively cheap, as the vmexit from the page fault should be
> > faster to process as it is fully handled within the host kernel.
> >
> > Perhaps so
Mike Waychison writes:
> On Mon, Sep 10, 2012 at 3:59 PM, Michael S. Tsirkin wrote:
>> On Mon, Sep 10, 2012 at 01:37:06PM -0400, Mike Waychison wrote:
>>> On Mon, Sep 10, 2012 at 5:05 AM, Michael S. Tsirkin wrote:
>>> > On Tue, Jun 26, 2012 at 01:32:58PM -0700, Frank Swiderski wrote:
>>> >> This
On Mon, Sep 10, 2012 at 04:49:40PM -0400, Mike Waychison wrote:
> On Mon, Sep 10, 2012 at 3:59 PM, Michael S. Tsirkin wrote:
> > On Mon, Sep 10, 2012 at 01:37:06PM -0400, Mike Waychison wrote:
> >> On Mon, Sep 10, 2012 at 5:05 AM, Michael S. Tsirkin
> >> wrote:
> >> > On Tue, Jun 26, 2012 at 01:
On Mon, Sep 10, 2012 at 3:59 PM, Michael S. Tsirkin wrote:
> On Mon, Sep 10, 2012 at 01:37:06PM -0400, Mike Waychison wrote:
>> On Mon, Sep 10, 2012 at 5:05 AM, Michael S. Tsirkin wrote:
>> > On Tue, Jun 26, 2012 at 01:32:58PM -0700, Frank Swiderski wrote:
>> >> This implementation of a virtio ba
On Mon, Sep 10, 2012 at 01:37:06PM -0400, Mike Waychison wrote:
> On Mon, Sep 10, 2012 at 5:05 AM, Michael S. Tsirkin wrote:
> > On Tue, Jun 26, 2012 at 01:32:58PM -0700, Frank Swiderski wrote:
> >> This implementation of a virtio balloon driver uses the page cache to
> >> "store" pages that have
On Mon, Sep 10, 2012 at 2:04 PM, Rik van Riel wrote:
> On 09/10/2012 01:37 PM, Mike Waychison wrote:
>>
>> On Mon, Sep 10, 2012 at 5:05 AM, Michael S. Tsirkin
>> wrote:
>
>
>>> Also can you pls answer Avi's question?
>>> How is overcommit managed?
>>
>>
>> Overcommit in our deployments is managed
On 09/10/2012 01:37 PM, Mike Waychison wrote:
On Mon, Sep 10, 2012 at 5:05 AM, Michael S. Tsirkin wrote:
Also can you pls answer Avi's question?
How is overcommit managed?
Overcommit in our deployments is managed using memory cgroups on the
host. This allows us to have very directed polici
On Mon, Sep 10, 2012 at 5:05 AM, Michael S. Tsirkin wrote:
> On Tue, Jun 26, 2012 at 01:32:58PM -0700, Frank Swiderski wrote:
>> This implementation of a virtio balloon driver uses the page cache to
>> "store" pages that have been released to the host. The communication
>> (outside of target coun
On Tue, Jun 26, 2012 at 01:32:58PM -0700, Frank Swiderski wrote:
> This implementation of a virtio balloon driver uses the page cache to
> "store" pages that have been released to the host. The communication
> (outside of target counts) is one way--the guest notifies the host when
> it adds a page
Paolo Bonzini writes:
> Il 02/07/2012 02:29, Rusty Russell ha scritto:
>> VIRTIO_BALLOON_F_MUST_TELL_HOST
>> implies you should tell the host (eventually). I don't know if any
>> implementations actually care though.
>
> This is indeed broken, because it is a "negative" feature: it tells you
> th
On 06/26/2012 11:32 PM, Frank Swiderski wrote:
> This implementation of a virtio balloon driver uses the page cache to
> "store" pages that have been released to the host. The communication
> (outside of target counts) is one way--the guest notifies the host when
> it adds a page to the page cache
Il 02/07/2012 02:29, Rusty Russell ha scritto:
> VIRTIO_BALLOON_F_MUST_TELL_HOST
> implies you should tell the host (eventually). I don't know if any
> implementations actually care though.
This is indeed broken, because it is a "negative" feature: it tells you
that "implicit deflate" is _not_ su
On Tue, Jun 26, 2012 at 01:32:58PM -0700, Frank Swiderski wrote:
> +static void fill_balloon(struct virtio_balloon *vb, size_t num)
> +{
> + int err;
> +
> + /* We can only do one array worth at a time. */
> + num = min(num, ARRAY_SIZE(vb->pfns));
> +
> + for (vb->num_pfns = 0; vb->
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