Re: [PATCH 00/10] OOM Debug print selection and additional information

Qian Cai
2019-08-28T21:34:55Z

On Wed, 2019-08-28 at 14:17 -0700, Edward Chron wrote:
> On Wed, Aug 28, 2019 at 1:18 PM Qian Cai <cai@lca.pw> wrote:
> >
> > On Wed, 2019-08-28 at 12:46 -0700, Edward Chron wrote:
> > > But with the caveat that running a eBPF script that it isn't standard
> > > Linux
> > > operating procedure, at this point in time any way will not be well
> > > received in the data center.
> >
> > Can't you get your eBPF scripts into the BCC project? As far I can tell, the
> > BCC
> > has been included in several distros already, and then it will become a part
> > of
> > standard linux toolkits.
> >
> > >
> > > Our belief is if you really think eBPF is the preferred mechanism
> > > then move OOM reporting to an eBPF.
> > > I mentioned this before but I will reiterate this here.
> >
> > On the other hand, it seems many people are happy with the simple kernel OOM
> > report we have here. Not saying the current situation is perfect. On the top
> > of
> > that, some people are using kdump, and some people have resource monitoring
> > to
> > warn about potential memory overcommits before OOM kicks in etc.
>
> Assuming you can implement your existing report in eBPF then those who like
> the
> current output would still get the current output. Same with the patches we
> sent
> upstream, nothing in the report changes by default. So no problems for those
> who
> are happy, they'll still be happy.

I don't think it makes any sense to rewrite the existing code to depends on eBPF
though.