From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Vince Weaver <vweaver1@eecs.utk.edu>
Cc: linux-kernel@vger.kernel.org, fbuihuu@gmail.com, mingo@elte.hu,
paulus@samba.org, acme@redhat.com
Subject: Re: perf: regression with PERF_EVENT_IOC_REFRESH
Date: Tue, 24 May 2011 17:11:54 +0200 [thread overview]
Message-ID: <1306249914.18455.43.camel@twins> (raw)
In-Reply-To: <alpine.DEB.2.00.1105241041490.10575@cl320.eecs.utk.edu>
On Tue, 2011-05-24 at 11:04 -0400, Vince Weaver wrote:
> As an aside, I also wasted 6 hours last night finding out that you don't
> get signaled on overflow if you don't have a ring-buffer mmap()ed, even
> if you never read from the buffer and you only are interested in counting
> the number of overflows.
That sounds like something we could fix, let me investigate.
> I should stop complaining though or you'll
> start telling me to fix the documentation. Which maybe I would do if I
> didn't spend all my time writing code to reproduce problems in the perf
> ABI for bisection purposes.
Both are appreciated.
next prev parent reply other threads:[~2011-05-24 15:12 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-23 20:04 perf: regression with PERF_EVENT_IOC_REFRESH Vince Weaver
2011-05-23 20:22 ` Peter Zijlstra
2011-05-24 6:20 ` Vince Weaver
2011-05-24 10:30 ` Peter Zijlstra
2011-05-24 15:04 ` Vince Weaver
2011-05-24 15:10 ` Peter Zijlstra
2011-05-24 15:40 ` Ingo Molnar
2011-05-24 20:31 ` Vince Weaver
2011-05-25 10:39 ` Ingo Molnar
2011-05-25 21:24 ` Vince Weaver
2011-05-24 17:53 ` Vince Weaver
2011-05-24 15:11 ` Peter Zijlstra [this message]
2011-05-24 15:18 ` Peter Zijlstra
2011-05-24 21:48 ` Vince Weaver
2011-05-28 3:38 ` Vince Weaver
2011-05-28 10:22 ` Peter Zijlstra
2011-05-28 13:26 ` perf: definition of a "regression" Vince Weaver
2011-06-02 7:45 ` Ingo Molnar
2011-05-29 16:54 ` perf: regression with PERF_EVENT_IOC_REFRESH Vince Weaver
2011-05-31 1:33 ` perf: [patch] " Vince Weaver
2011-05-31 7:17 ` Peter Zijlstra
2011-05-31 7:23 ` Peter Zijlstra
2011-05-31 13:49 ` Vince Weaver
2011-05-31 15:52 ` Peter Zijlstra
2011-05-31 16:39 ` Vince Weaver
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