Re: [PATCH linux-next] delayacct: track delays from memory compact

[yong w]

Sorry, the patch has something wrong.
I'll resend the patch later.

Thanks!

Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> 于2021年12月4日周六 05:02写道：
>
> On Fri,  3 Dec 2021 06:37:52 -0800 yongw.pur@xxxxxxxxx wrote:
>
> > From: wangyong <wang.yong12@xxxxxxxxxx>
> >
> > Delay accounting does not track the delay of memory compact.
> > When there is not enough free memory, tasks can spend
> > a amount of their time waiting for memory compact.
> >
> > To get the impact of tasks in direct memory compact, measure
> > the delay when allocating memory through memory compact.
> >
> > ...
> >
> > --- a/include/linux/delayacct.h
> > +++ b/include/linux/delayacct.h
> > @@ -42,8 +42,13 @@ struct task_delay_info {
> >       u64 thrashing_start;
> >       u64 thrashing_delay;    /* wait for thrashing page */
> >
> > +     u64 compact_start;
> > +     u64 compact_delay;      /* wait for memory compact */
> > +
> > +     u64 freepages_start;
>
> task_delay_info already has a freepages_start, so it fails to compile.
>
> Did you send the correct version?
>