When a process is being killed it might be in an uninterruptible sleep
which leads to an unpredictable delay in its memory reclaim. In low memory
situations, when it's important to free up memory quickly, such delay is
problematic. Kernel solves this problem with oom-reaper thread which
performs me
On Fri, Nov 13, 2020 at 03:55:39PM -0800, Andrew Morton wrote:
> On Fri, 13 Nov 2020 09:34:48 -0800 Suren Baghdasaryan
> wrote:
>
> > When a process is being killed it might be in an uninterruptible sleep
> > which leads to an unpredictable delay in its memory reclaim. In low memory
> > situatio
On Fri 13-11-20 18:16:32, Andrew Morton wrote:
[...]
> It's all sounding a bit painful (but not *too* painful). But to
> reiterate, I do think that adding the ability for a process to shoot
> down a large amount of another process's memory is a lot more generally
> useful than tying it to SIGKILL,
On Wed, Nov 18, 2020 at 11:10 AM Michal Hocko wrote:
>
> On Fri 13-11-20 18:16:32, Andrew Morton wrote:
> [...]
> > It's all sounding a bit painful (but not *too* painful). But to
> > reiterate, I do think that adding the ability for a process to shoot
> > down a large amount of another process's
On Wed 18-11-20 11:22:21, Suren Baghdasaryan wrote:
> On Wed, Nov 18, 2020 at 11:10 AM Michal Hocko wrote:
> >
> > On Fri 13-11-20 18:16:32, Andrew Morton wrote:
> > [...]
> > > It's all sounding a bit painful (but not *too* painful). But to
> > > reiterate, I do think that adding the ability for
On Wed, Nov 18, 2020 at 11:32 AM Michal Hocko wrote:
>
> On Wed 18-11-20 11:22:21, Suren Baghdasaryan wrote:
> > On Wed, Nov 18, 2020 at 11:10 AM Michal Hocko wrote:
> > >
> > > On Fri 13-11-20 18:16:32, Andrew Morton wrote:
> > > [...]
> > > > It's all sounding a bit painful (but not *too* painf
On Wed, Nov 18, 2020 at 11:51 AM Suren Baghdasaryan wrote:
>
> On Wed, Nov 18, 2020 at 11:32 AM Michal Hocko wrote:
> >
> > On Wed 18-11-20 11:22:21, Suren Baghdasaryan wrote:
> > > On Wed, Nov 18, 2020 at 11:10 AM Michal Hocko wrote:
> > > >
> > > > On Fri 13-11-20 18:16:32, Andrew Morton wrote
On Wed, Nov 18, 2020 at 11:55 AM Suren Baghdasaryan wrote:
>
> On Wed, Nov 18, 2020 at 11:51 AM Suren Baghdasaryan wrote:
> >
> > On Wed, Nov 18, 2020 at 11:32 AM Michal Hocko wrote:
> > >
> > > On Wed 18-11-20 11:22:21, Suren Baghdasaryan wrote:
> > > > On Wed, Nov 18, 2020 at 11:10 AM Michal H
On Wed, Nov 18, 2020 at 4:13 PM Suren Baghdasaryan wrote:
>
> On Wed, Nov 18, 2020 at 11:55 AM Suren Baghdasaryan wrote:
> >
> > On Wed, Nov 18, 2020 at 11:51 AM Suren Baghdasaryan
> > wrote:
> > >
> > > On Wed, Nov 18, 2020 at 11:32 AM Michal Hocko wrote:
> > > >
> > > > On Wed 18-11-20 11:22
On Fri, 13 Nov 2020 09:34:48 -0800 Suren Baghdasaryan wrote:
> When a process is being killed it might be in an uninterruptible sleep
> which leads to an unpredictable delay in its memory reclaim. In low memory
> situations, when it's important to free up memory quickly, such delay is
> problemat
On Fri, Nov 13, 2020 at 3:55 PM Andrew Morton wrote:
>
> On Fri, 13 Nov 2020 09:34:48 -0800 Suren Baghdasaryan
> wrote:
>
> > When a process is being killed it might be in an uninterruptible sleep
> > which leads to an unpredictable delay in its memory reclaim. In low memory
> > situations, when
On Fri, 13 Nov 2020 16:06:25 -0800 Suren Baghdasaryan wrote:
> On Fri, Nov 13, 2020 at 3:55 PM Andrew Morton
> wrote:
> >
> > On Fri, 13 Nov 2020 09:34:48 -0800 Suren Baghdasaryan
> > wrote:
> >
> > > When a process is being killed it might be in an uninterruptible sleep
> > > which leads to
On Fri, Nov 13, 2020 at 5:00 PM Andrew Morton wrote:
>
> On Fri, 13 Nov 2020 16:06:25 -0800 Suren Baghdasaryan
> wrote:
>
> > On Fri, Nov 13, 2020 at 3:55 PM Andrew Morton
> > wrote:
> > >
> > > On Fri, 13 Nov 2020 09:34:48 -0800 Suren Baghdasaryan
> > > wrote:
> > >
> > > > When a process i
On Fri, 13 Nov 2020 17:09:37 -0800 Suren Baghdasaryan wrote:
> > > > Seems to me that the ability to reap another process's memory is a
> > > > generally useful one, and that it should not be tied to delivering a
> > > > signal in this fashion.
> > > >
> > > > And we do have the new process_madvi
On Fri, Nov 13, 2020 at 5:18 PM Andrew Morton wrote:
>
> On Fri, 13 Nov 2020 17:09:37 -0800 Suren Baghdasaryan
> wrote:
>
> > > > > Seems to me that the ability to reap another process's memory is a
> > > > > generally useful one, and that it should not be tied to delivering a
> > > > > signal i
On Fri, 13 Nov 2020 17:57:02 -0800 Suren Baghdasaryan wrote:
> On Fri, Nov 13, 2020 at 5:18 PM Andrew Morton
> wrote:
> >
> > On Fri, 13 Nov 2020 17:09:37 -0800 Suren Baghdasaryan
> > wrote:
> >
> > > > > > Seems to me that the ability to reap another process's memory is a
> > > > > > general
On Fri, Nov 13, 2020 at 6:16 PM Andrew Morton wrote:
>
> On Fri, 13 Nov 2020 17:57:02 -0800 Suren Baghdasaryan
> wrote:
>
> > On Fri, Nov 13, 2020 at 5:18 PM Andrew Morton
> > wrote:
> > >
> > > On Fri, 13 Nov 2020 17:09:37 -0800 Suren Baghdasaryan
> > > wrote:
> > >
> > > > > > > Seems to m
On Fri, Nov 13, 2020 at 06:16:32PM -0800, Andrew Morton wrote:
> On Fri, 13 Nov 2020 17:57:02 -0800 Suren Baghdasaryan
> wrote:
>
> > On Fri, Nov 13, 2020 at 5:18 PM Andrew Morton
> > wrote:
> > >
> > > On Fri, 13 Nov 2020 17:09:37 -0800 Suren Baghdasaryan
> > > wrote:
> > >
> > > > > > > Se
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