Re: [PATCH v8 0/3]: perf: reduce data loss when profiling highly parallel CPU bound workloads

From: Ingo Molnar
Date: Mon Sep 10 2018 - 06:03:10 EST

* Jiri Olsa <jolsa@xxxxxxxxxx> wrote:

> > Per-CPU threading the record session would have so many other advantages as well (scalability,
> > etc.).
> >
> > Jiri did per-CPU recording patches a couple of months ago, not sure how usable they are at the
> > moment?
> it's still usable, I can rebase it and post a branch pointer,
> the problem is I haven't been able to find a case with a real
> performance benefit yet.. ;-)
> perhaps because I haven't tried on server with really big cpu
> numbers

Maybe Alexey could pick up from there? Your concept looked fairly mature to me
and I tried it on a big-CPU box back then and there were real improvements.