Thread (1 message) 1 message, 1 author, 2018-08-02

Re: [PATCH v2 2/2] virtio_balloon: replace oom notifier with shrinker

From: Michal Hocko <mhocko@kernel.org>
Date: 2018-08-02 11:29:01

Possibly related (same subject, not in this thread)

On Thu 02-08-18 19:27:40, Wei Wang wrote:
On 08/02/2018 07:00 PM, Tetsuo Handa wrote:
quoted
On 2018/08/02 19:32, Wei Wang wrote:
quoted
On 08/01/2018 07:34 PM, Michal Hocko wrote:
quoted
Do you have any numbers for how does this work in practice?
It works in this way: for example, we can set the parameter, balloon_pages_to_shrink,
to shrink 1GB memory once shrink scan is called. Now, we have a 8GB guest, and we balloon
out 7GB. When shrink scan is called, the balloon driver will get back 1GB memory and give
them back to mm, then the ballooned memory becomes 6GB.
Since shrinker might be called concurrently (am I correct?),
Not sure about it being concurrently, but I think it would be called
repeatedly as should_continue_reclaim() returns true.
Multiple direct reclaimers might indeed invoke it concurrently.
-- 
Michal Hocko
SUSE Labs
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help