From: Namhyung Kim <namhyung@kernel.org>
To: David Miller <davem@davemloft.net>
Cc: jolsa@redhat.com, acme@kernel.org, linux-kernel@vger.kernel.org,
jolsa@kernel.org, kernel-team@lge.com
Subject: Re: [PATCH RFC] hist lookups
Date: Mon, 19 Nov 2018 15:28:37 +0900 [thread overview]
Message-ID: <20181119062837.GB20153@sejong> (raw)
In-Reply-To: <20181118.205243.227550158553460819.davem@davemloft.net>
Hello David,
On Sun, Nov 18, 2018 at 08:52:43PM -0800, David Miller wrote:
> From: Jiri Olsa <jolsa@redhat.com>
> Date: Tue, 13 Nov 2018 11:40:54 +0100
>
> > I pushed/rebased what I have to perf/fixes branch again
> >
> > please note I had to change our compile changes, because
> > they wouldn't compile on x86, but I can't verify on sparc,
> > so you might see some compile fails again
>
> I just checked your current perf/fixes branch.
>
> It builds on Sparc ;-)
>
> And it behaves better too. I do get tons of drops and lost events,
> but it seems to keep going even during the hardest load.
>
> Eventually I end up with a lot of unresolvable histogram entries,
> so that is something to look into.
Did you record callchains as well? I'd like to know whether it's
related to the children (cumulative) mode or not.
Thanks,
Namhyung
>
> I looked at your drop logic and it seems perfect, we avoid dropping
> all non-SAMPLE events which is what we want. So that can't be the
> cause of the issues I am seeing.
>
next prev parent reply other threads:[~2018-11-19 6:28 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-31 5:03 [PATCH RFC] hist lookups David Miller
2018-10-31 12:43 ` Arnaldo Carvalho de Melo
2018-10-31 15:39 ` Jiri Olsa
2018-10-31 16:08 ` David Miller
2018-11-03 6:30 ` David Miller
2018-11-04 20:18 ` Jiri Olsa
2018-11-05 0:50 ` David Miller
2018-11-05 20:34 ` Jiri Olsa
2018-11-05 22:52 ` David Miller
2018-11-06 3:45 ` David Miller
2018-11-06 4:03 ` David Miller
2018-11-06 4:53 ` David Miller
2018-11-06 11:54 ` Jiri Olsa
2018-11-19 5:26 ` Namhyung Kim
2018-11-19 9:12 ` Jiri Olsa
2018-11-20 1:13 ` Namhyung Kim
2018-11-06 20:42 ` Jiri Olsa
2018-11-07 6:13 ` David Miller
2018-11-07 8:32 ` Jiri Olsa
2018-11-07 19:43 ` Jiri Olsa
2018-11-07 20:01 ` David Miller
2018-11-07 20:28 ` Arnaldo Carvalho de Melo
2018-11-08 6:04 ` David Miller
2018-11-08 7:13 ` Jiri Olsa
2018-11-09 1:07 ` David Miller
2018-11-11 19:41 ` Jiri Olsa
2018-11-11 19:41 ` Jiri Olsa
2018-11-11 22:32 ` David Miller
2018-11-11 22:43 ` Jiri Olsa
2018-11-11 22:58 ` David Miller
2018-11-11 23:08 ` David Miller
2018-11-11 23:26 ` Jiri Olsa
2018-11-11 23:32 ` David Miller
2018-11-13 10:40 ` Jiri Olsa
2018-11-19 4:52 ` David Miller
2018-11-19 6:28 ` Namhyung Kim [this message]
2018-11-19 6:33 ` David Miller
2018-11-19 7:16 ` Namhyung Kim
2018-11-19 9:14 ` Jiri Olsa
2018-11-06 11:51 ` Jiri Olsa
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