Subject: Re: [PATCH 1/2] perf tools: Add reference timestamp to perf header
From: Peter Zijlstra <peterz@infradead.org>
To: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
        "David S. Ahern" <daahern@cisco.com>, linux-perf-users@vger.kernel.org,
        linux-kernel@vger.kernel.org
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Date: Mon, 13 Dec 2010 18:47:13 +0100
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On Mon, 2010-12-13 at 18:35 +0100, Peter Zijlstra wrote:
>         * this CLOCK_MONOTONIC offset (for what little good that does, since
> our clock isn't strictly sync'ed to CLOCK_MONOTONIC so we can incur
> arbitrary drift). 

In fact, the only sane way to do that is by creating a software counter
that represents CLOCK_MONOTONIC and sample that say once a minute (or
more often if you want smaller drift).


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