search for: zone_is_empti

On 11/30/2016 12:43 AM, Liang Li wrote: > +static void send_unused_pages_info(struct virtio_balloon *vb, > + unsigned long req_id) > +{ > + struct scatterlist sg_in; > + unsigned long pos = 0; > + struct virtqueue *vq = vb->req_vq; > + struct virtio_balloon_resp_hdr *hdr = vb->resp_hdr; > + int ret, order; > + > + mutex_lock(&vb->balloon_lock); > +

On 11/30/2016 12:43 AM, Liang Li wrote: > +static void send_unused_pages_info(struct virtio_balloon *vb, > + unsigned long req_id) > +{ > + struct scatterlist sg_in; > + unsigned long pos = 0; > + struct virtqueue *vq = vb->req_vq; > + struct virtio_balloon_resp_hdr *hdr = vb->resp_hdr; > + int ret, order; > + > + mutex_lock(&vb->balloon_lock); > +

On Wed, Jul 27, 2016 at 09:23:35AM +0800, Liang Li wrote: > Save the free page info into a page bitmap, will be used in virtio > balloon device driver. > > Signed-off-by: Liang Li <liang.z.li at intel.com> > Cc: Andrew Morton <akpm at linux-foundation.org> > Cc: Vlastimil Babka <vbabka at suse.cz> > Cc: Mel Gorman <mgorman at techsingularity.net> >

On Wed, Jul 27, 2016 at 09:23:35AM +0800, Liang Li wrote: > Save the free page info into a page bitmap, will be used in virtio > balloon device driver. > > Signed-off-by: Liang Li <liang.z.li at intel.com> > Cc: Andrew Morton <akpm at linux-foundation.org> > Cc: Vlastimil Babka <vbabka at suse.cz> > Cc: Mel Gorman <mgorman at techsingularity.net> >

> > Maybe I am not clear enough. > > > > I mean if we inflate balloon before live migration, for a 8GB guest, it takes > about 5 Seconds for the inflating operation to finish. > > And these 5 seconds are spent where? > The time is spent on allocating the pages and send the allocated pages pfns to QEMU through virtio. > > For the PV solution, there is no need

> > Maybe I am not clear enough. > > > > I mean if we inflate balloon before live migration, for a 8GB guest, it takes > about 5 Seconds for the inflating operation to finish. > > And these 5 seconds are spent where? > The time is spent on allocating the pages and send the allocated pages pfns to QEMU through virtio. > > For the PV solution, there is no need

On Thu, 16 Mar 2017 15:08:46 +0800 Wei Wang <wei.w.wang at intel.com> wrote: > From: Liang Li <liang.z.li at intel.com> > > This patch adds a function to provides a snapshot of the present system > unused pages. An important usage of this function is to provide the > unsused pages to the Live migration thread, which skips the transfer of > thoses unused pages. Newly

On Thu, 16 Mar 2017 15:08:46 +0800 Wei Wang <wei.w.wang at intel.com> wrote: > From: Liang Li <liang.z.li at intel.com> > > This patch adds a function to provides a snapshot of the present system > unused pages. An important usage of this function is to provide the > unsused pages to the Live migration thread, which skips the transfer of > thoses unused pages. Newly

On Fri, Mar 17, 2017 at 02:55:33PM +0800, Wei Wang wrote: > On 03/17/2017 05:28 AM, Andrew Morton wrote: > > On Thu, 16 Mar 2017 15:08:46 +0800 Wei Wang <wei.w.wang at intel.com> wrote: > > > > > From: Liang Li <liang.z.li at intel.com> > > > > > > This patch adds a function to provides a snapshot of the present system > > > unused

On Fri, Mar 17, 2017 at 02:55:33PM +0800, Wei Wang wrote: > On 03/17/2017 05:28 AM, Andrew Morton wrote: > > On Thu, 16 Mar 2017 15:08:46 +0800 Wei Wang <wei.w.wang at intel.com> wrote: > > > > > From: Liang Li <liang.z.li at intel.com> > > > > > > This patch adds a function to provides a snapshot of the present system > > > unused

On 12/04/2016 05:13 AM, Li, Liang Z wrote: >> On 11/30/2016 12:43 AM, Liang Li wrote: >>> +static void send_unused_pages_info(struct virtio_balloon *vb, >>> + unsigned long req_id) >>> +{ >>> + struct scatterlist sg_in; >>> + unsigned long pos = 0; >>> + struct virtqueue *vq = vb->req_vq; >>> + struct

On 12/04/2016 05:13 AM, Li, Liang Z wrote: >> On 11/30/2016 12:43 AM, Liang Li wrote: >>> +static void send_unused_pages_info(struct virtio_balloon *vb, >>> + unsigned long req_id) >>> +{ >>> + struct scatterlist sg_in; >>> + unsigned long pos = 0; >>> + struct virtqueue *vq = vb->req_vq; >>> + struct

On Fri, Mar 04, 2016 at 03:13:03PM +0000, Li, Liang Z wrote: > > > Maybe I am not clear enough. > > > > > > I mean if we inflate balloon before live migration, for a 8GB guest, it takes > > about 5 Seconds for the inflating operation to finish. > > > > And these 5 seconds are spent where? > > > > The time is spent on allocating the pages

Save the free page info into a page bitmap, will be used in virtio balloon device driver. Signed-off-by: Liang Li <liang.z.li at intel.com> Cc: Andrew Morton <akpm at linux-foundation.org> Cc: Vlastimil Babka <vbabka at suse.cz> Cc: Mel Gorman <mgorman at techsingularity.net> Cc: Michael S. Tsirkin <mst at redhat.com> Cc: Paolo Bonzini <pbonzini at redhat.com>

> On 11/30/2016 12:43 AM, Liang Li wrote: > > +static void send_unused_pages_info(struct virtio_balloon *vb, > > + unsigned long req_id) > > +{ > > + struct scatterlist sg_in; > > + unsigned long pos = 0; > > + struct virtqueue *vq = vb->req_vq; > > + struct virtio_balloon_resp_hdr *hdr = vb->resp_hdr; > > + int ret, order; > > +

On 03/30/2017 01:48 AM, Michael S. Tsirkin wrote: > On Fri, Mar 17, 2017 at 02:55:33PM +0800, Wei Wang wrote: >> On 03/17/2017 05:28 AM, Andrew Morton wrote: >>> On Thu, 16 Mar 2017 15:08:46 +0800 Wei Wang <wei.w.wang at intel.com> wrote: >>> >>>> From: Liang Li <liang.z.li at intel.com> >>>> >>>> This patch adds a function

From: Liang Li <liang.z.li at intel.com> This patch adds a function to provides a snapshot of the present system unused pages. An important usage of this function is to provide the unsused pages to the Live migration thread, which skips the transfer of thoses unused pages. Newly used pages can be re-tracked by the dirty page logging mechanisms. Signed-off-by: Liang Li <liang.z.li at

On 03/17/2017 05:28 AM, Andrew Morton wrote: > On Thu, 16 Mar 2017 15:08:46 +0800 Wei Wang <wei.w.wang at intel.com> wrote: > >> From: Liang Li <liang.z.li at intel.com> >> >> This patch adds a function to provides a snapshot of the present system >> unused pages. An important usage of this function is to provide the >> unsused pages to the Live

> On Fri, Mar 04, 2016 at 09:12:12AM +0000, Li, Liang Z wrote: > > > Although I wonder which is cheaper; that would be fairly expensive > > > for the guest wouldn't it? And you'd somehow have to kick the guest > > > before migration to do the ballooning - and how long would you wait for > it to finish? > > > > About 5 seconds for an 8G guest,

> On Fri, Mar 04, 2016 at 09:12:12AM +0000, Li, Liang Z wrote: > > > Although I wonder which is cheaper; that would be fairly expensive > > > for the guest wouldn't it? And you'd somehow have to kick the guest > > > before migration to do the ballooning - and how long would you wait for > it to finish? > > > > About 5 seconds for an 8G guest,