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From: Dave Jones <davej@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>,
	Linux Kernel <linux-kernel@vger.kernel.org>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Ingo Molnar <mingo@kernel.org>
Subject: Re: trinity finds ftrace/perf bug. Film at 11.
Date: Mon, 16 Sep 2013 12:44:21 -0400	[thread overview]
Message-ID: <20130916164421.GA17568@redhat.com> (raw)
In-Reply-To: <20130916093719.GR21832@twins.programming.kicks-ass.net>

On Mon, Sep 16, 2013 at 11:37:19AM +0200, Peter Zijlstra wrote:
 > On Fri, Sep 13, 2013 at 10:16:38AM -0400, Dave Jones wrote:
 > > without the diff, it'll use all kinds of fds. this diff hardwires it to just use
 > > fd's from perf_event_open.  I'll hack up a command line switch to do this in a better
 > > way at some point.
 > > 
 > > 	Dave
 > > 
 > > 
 > > diff --git a/fds.c b/fds.c
 > > index cc1ca6d..f48c95e 100644
 > > --- a/fds.c
 > > +++ b/fds.c
 > > @@ -119,6 +119,8 @@ static int get_new_random_fd(void)
 > >  retry:
 > >  	i = rand() % 6;
 > >  
 > > +	i = 3;
 > > +
 > >  	if (do_specific_proto == TRUE)
 > >  		i = 1;
 > 
 > I'm just not having much luck it seems, even after actually enabling
 > list debugging (D0H).

may be some other option.. Try http://www.codemonkey.org.uk/junk/haswell-config

 > What kind of hardware are you running this on?

model name	: Intel(R) Core(TM) i5-4670T CPU @ 2.30GHz

	Dave


  parent reply	other threads:[~2013-09-16 16:45 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-09-11 13:54 Dave Jones
2013-09-12 18:19 ` Steven Rostedt
2013-09-12 18:38   ` Dave Jones
2013-10-03 15:44     ` Peter Zijlstra
2013-10-03 16:57       ` Ingo Molnar
2013-09-13 10:56   ` Peter Zijlstra
2013-09-13 14:16     ` Dave Jones
2013-09-16  9:37       ` Peter Zijlstra
2013-09-16 10:25         ` Ingo Molnar
2013-09-16 10:43           ` Peter Zijlstra
2013-09-16 16:45             ` Dave Jones
2013-09-16 16:44         ` Dave Jones [this message]
2013-09-18 11:34           ` Peter Zijlstra
2013-09-18 13:22             ` Dave Jones
2013-09-13 14:32     ` Steven Rostedt
2013-09-13 14:58       ` Peter Zijlstra
2013-09-13 11:14   ` Peter Zijlstra
2013-09-13 14:28     ` Dave Jones
2013-09-13 14:58       ` Peter Zijlstra
2013-11-19 19:18     ` [tip:perf/urgent] perf: Remove fragile swevent hlist optimization tip-bot for Peter Zijlstra

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