linux-kernel - Re: [RFC] perf record: missing buildid for callstack modules

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Message-ID: <20160112153723.GK6357@twins.programming.kicks-ass.net>
Date:	Tue, 12 Jan 2016 16:37:23 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Stephane Eranian <eranian@...gle.com>,
	Namhyung Kim <namhyung@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Jiri Olsa <jolsa@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>
Subject: Re: [RFC] perf record: missing buildid for callstack modules

On Tue, Jan 12, 2016 at 11:34:54AM -0300, Arnaldo Carvalho de Melo wrote:
> Have you ever played, when you noticed those overheads, with -N? Or just
> used the -B big hammer and moved on?

I yelled on irc, jolsa told me to use -B, I moved on ;-)

Not sure -N really buys me anything, its still slower and I really don't
need any of this.