Re: [PATCH RFC] hist lookups

David Miller
2018-11-05T22:52:32Z

From: Jiri Olsa <jolsa@redhat.com>
Date: Mon, 5 Nov 2018 21:34:47 +0100

> I put something together.. still testing, but it's already
> showing 0 lost events when for 'overwrite = 0' case even
> for high load.. the old code shows ~1500 for same workload
>
> I'm printing lost event counts in stdio output header:
>
> # perf top -d 1 --stdio
> PerfTop: 5734 irqs/sec kernel:57.3% exact: 100.0% lost: 0 [4000Hz cycles:ppp], (all, 8 CPUs)
>
> will probably add it to tui as well, seems useful
>
> I pushed it in perf/fixes branch in:
> git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
>
> it's stil work in prograss.. not too manye complete changelogs ;-)

Looks interesting!

I'll play with this on sparc64 later, thanks!