Displaying 4 results from an estimated 4 matches for "node_page_st".
2020 Feb 10
2
[PATCH RFC] virtio_balloon: conservative balloon page shrinking
On Saturday, February 8, 2020 8:33 PM, Tetsuo Handa wrote:
>
> Is this NUMA aware? Can "node-A's NR_FILE_PAGES is already 0 and
> node-B's NR_FILE_PAGES is not 0, but allocation request which triggered this
> shrinker wants to allocate from only node-B" happen?
No, it's a global counter.
>Can some thread keep
> this shrinker defunctional by keep
2020 Feb 10
2
[PATCH RFC] virtio_balloon: conservative balloon page shrinking
On Saturday, February 8, 2020 8:33 PM, Tetsuo Handa wrote:
>
> Is this NUMA aware? Can "node-A's NR_FILE_PAGES is already 0 and
> node-B's NR_FILE_PAGES is not 0, but allocation request which triggered this
> shrinker wants to allocate from only node-B" happen?
No, it's a global counter.
>Can some thread keep
> this shrinker defunctional by keep
2020 Feb 10
2
[PATCH RFC] virtio_balloon: conservative balloon page shrinking
...e not yet depleted.
The existing balloon isn't numa aware. "but the balloon cannot shrink " - even we
let balloon to shrink, it could shrink pages from the uninterested node.
When we have a numa aware balloon, we could further update the shrinker
to check with the per node counter , node_page_state(NR_FILE_PAGES).
>
> >
> Well, my comment is rather: "Do not try to reserve guest's memory. In other
> words, do not try to maintain balloons on the guest side. Since host would
> be able to cache file data on the host's cache, guests would be able to
> quickly...
2020 Feb 10
2
[PATCH RFC] virtio_balloon: conservative balloon page shrinking
...e not yet depleted.
The existing balloon isn't numa aware. "but the balloon cannot shrink " - even we
let balloon to shrink, it could shrink pages from the uninterested node.
When we have a numa aware balloon, we could further update the shrinker
to check with the per node counter , node_page_state(NR_FILE_PAGES).
>
> >
> Well, my comment is rather: "Do not try to reserve guest's memory. In other
> words, do not try to maintain balloons on the guest side. Since host would
> be able to cache file data on the host's cache, guests would be able to
> quickly...