linux-kernel - Re: [PATCH 2/7] perf data: Switch to multiple cpu stream files

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Date:	Mon, 20 Apr 2015 17:41:29 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Jiri Olsa <jolsa@...nel.org>, David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	He Kuang <hekuang@...wei.com>, Ingo Molnar <mingo@...nel.org>,
	Jeremie Galarneau <jgalar@...icios.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Tom Zanussi <tzanussi@...il.com>,
	Wang Nan <wangnan0@...wei.com>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/7] perf data: Switch to multiple cpu stream files

Em Mon, Apr 20, 2015 at 10:19:44PM +0200, Jiri Olsa escreveu:
> On Mon, Apr 20, 2015 at 04:58:54PM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Sat, Apr 18, 2015 at 05:50:15PM +0200, Jiri Olsa escreveu:
> > > From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
> > > 
> > > Currently we store the data into single data strea/file. The cpu
> > > if data is stored within the event sample. The lttng puts the CPU
> > > number that belongs to the event into the packet context instead
> > > into the event.
> > > 
> > > This patch makes sure that the trace produce by perf does look the
> > > same way. We now use one stream per-CPU. Having it all in one stream
> > > increased the total size of the resulting file. The test went from
> > > 416KiB (with perf_cpu event member) to 24MiB due to the required
> > > (and pointless) flush. With the per-cpu streams the total size went
> > > up to 588KiB.
> > > 
> > > Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
> > > Link: http://lkml.kernel.org/n/tip-fco07vxi6yx4m9et2aimm4u0@git.kernel.org
> > > Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> > 
> > With latest babeltrace.git:
> > 
> > [acme@zoo babeltrace]$ git log --oneline | head -1
> > 48d711a204f6 Fix: Missing stdint.h in stream-class.h
> 
> hum, this is rather old one (Mar 10th), current is:
> 
> [jolsa@...va babeltrace]$ git show --oneline | head -1
> d8f190b24d52 Add tests for bt_ctf_field_string_append_len()

I did a git remove update...

Lemme double check:

[acme@zoo babeltrace]$ git remote update
Fetching origin
[acme@zoo babeltrace]$ git remote -v
origin	git://git.efficios.com/babeltrace.git (fetch)
origin	git://git.efficios.com/babeltrace.git (push)
[acme@zoo babeltrace]$ git log --oneline | head -1
48d711a204f6 Fix: Missing stdint.h in stream-class.h
[acme@zoo babeltrace]$

What is wrong here? Is it in a different branch?

/me checks again that... Yeah, I probably created my local branch from
some other branch, now that I did:

[acme@zoo babeltrace]$ git checkout -b master origin/master
Branch master set up to track remote branch master from origin.
Switched to a new branch 'master'
[acme@zoo babeltrace]$ git log --oneline | head -1
d8f190b24d52 Add tests for bt_ctf_field_string_append_len()
[acme@zoo babeltrace]$ 

will try again those patches...

- ARnaldo
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