From: Rusty Russell
Date: Wed, 26 Aug 2009 21:48:58 +0930
> Dave, can you push this to Linus ASAP?
Ok.
> Subject: virtio: net refill on out-of-memory
>
> If we run out of memory, use keventd to fill the buffer. There's a
> report of this happening: "Page allocation failures in guest",
> Messa
On Wed, 26 Aug 2009 02:25:01 pm Pierre Ossman wrote:
> On Wed, 26 Aug 2009 11:47:17 +0930
> Rusty Russell wrote:
>
> > On Fri, 14 Aug 2009 05:55:48 am Pierre Ossman wrote:
> > > On Wed, 12 Aug 2009 15:01:52 +0930
> > > Rusty Russell wrote:
> > > > Subject: virtio: net refill on out-of-memory
> >
On Wed, 26 Aug 2009 11:47:17 +0930
Rusty Russell wrote:
> On Fri, 14 Aug 2009 05:55:48 am Pierre Ossman wrote:
> > On Wed, 12 Aug 2009 15:01:52 +0930
> > Rusty Russell wrote:
> > > Subject: virtio: net refill on out-of-memory
> ...
> > Patch applied. Now we wait. :)
>
> Any results?
>
It's b
On Fri, 14 Aug 2009 05:55:48 am Pierre Ossman wrote:
> On Wed, 12 Aug 2009 15:01:52 +0930
> Rusty Russell wrote:
> > Subject: virtio: net refill on out-of-memory
...
> Patch applied. Now we wait. :)
Any results?
Thanks,
Rusty.
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On Wed, 12 Aug 2009 15:01:52 +0930
Rusty Russell wrote:
> On Wed, 12 Aug 2009 12:49:51 pm Rusty Russell wrote:
> > On Tue, 11 Aug 2009 04:22:53 pm Avi Kivity wrote:
> > > On 08/11/2009 09:32 AM, Pierre Ossman wrote:
> > > > I doesn't get out of it though, or at least the virtio net driver
> > > >
On 08/12/2009 11:22 AM, Pierre Ossman wrote:
Will it still trigger the OOM killer with this patch, or will things
behave slightly more gracefully?
I don't think you mentioned the OOM killer in your original report? Did
it trigger?
I might have things backwards here, but I th
On Wed, 12 Aug 2009 10:43:46 +0300
Avi Kivity wrote:
> On 08/12/2009 09:19 AM, Pierre Ossman wrote:
> > Will it still trigger the OOM killer with this patch, or will things
> > behave slightly more gracefully?
> >
>
> I don't think you mentioned the OOM killer in your original report? Did
On 08/12/2009 09:19 AM, Pierre Ossman wrote:
Will it still trigger the OOM killer with this patch, or will things
behave slightly more gracefully?
I don't think you mentioned the OOM killer in your original report? Did
it trigger?
--
error compiling committee.c: too many arguments to f
On Wed, 12 Aug 2009 03:11:21 pm Avi Kivity wrote:
> > + /* In theory, this can happen: if we don't get any buffers in
> > +* we will*never* try to fill again. Sleeping in keventd if
> > +* bad, but that is worse. */
> > + if (still_empty) {
> > + msleep(100);
> > +
On Wed, 12 Aug 2009 12:49:51 +0930
Rusty Russell wrote:
>
> It's kind of the nature of networking devices :(
>
> I'd say your host now offers GSO features, so the guest allocates big
> packets.
>
> > > I doesn't get out of it though, or at least the virtio net driver
> > > wedges itself.
>
>
On 08/12/2009 08:31 AM, Rusty Russell wrote:
+static void refill_work(struct work_struct *work)
+{
+ struct virtnet_info *vi;
+ bool still_empty;
+
+ vi = container_of(work, struct virtnet_info, refill);
+ napi_disable(&vi->napi);
+ try_fill_recv(vi, GFP_KERNEL);
+
On Wed, 12 Aug 2009 12:49:51 pm Rusty Russell wrote:
> On Tue, 11 Aug 2009 04:22:53 pm Avi Kivity wrote:
> > On 08/11/2009 09:32 AM, Pierre Ossman wrote:
> > > I doesn't get out of it though, or at least the virtio net driver
> > > wedges itself.
>
> There's a fixme to retry when this happens, but
On Tue, 11 Aug 2009 04:22:53 pm Avi Kivity wrote:
> On 08/11/2009 09:32 AM, Pierre Ossman wrote:
> > On Mon, 13 Jul 2009 23:59:52 +0900
> > Minchan Kim wrote:
> > Any ideas here? Is the virtio net driver very GFP_ATOMIC happy so it
> > drains all those pages? And why is this triggered by a kernel
On Mon, 13 Jul 2009 23:59:52 +0900
Minchan Kim wrote:
> On Mon, Jul 13, 2009 at 6:51 PM, Pierre Ossman wrote:
> > Jul 12 23:04:54 loki kernel: Active_anon:14065 active_file:87384
> > inactive_anon:37480
> > Jul 12 23:04:54 loki kernel: inactive_file:95821 unevictable:4 dirty:8
> > writeback:0 u
On 08/11/2009 09:32 AM, Pierre Ossman wrote:
On Mon, 13 Jul 2009 23:59:52 +0900
Minchan Kim wrote:
On Mon, Jul 13, 2009 at 6:51 PM, Pierre Ossman wrote:
Jul 12 23:04:54 loki kernel: Active_anon:14065 active_file:87384
inactive_anon:37480
Jul 12 23:04:54 loki kernel: inactive_file:
On Mon, Jul 13, 2009 at 6:51 PM, Pierre Ossman wrote:
> I upgraded my Fedora 10 host to 2.6.29 a few days ago and since then
> one of the guests keeps getting page allocation failures after a few
> hours. I've upgraded the kernel in the guest from 2.6.27 to 2.6.29
> without any change. There are al
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