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Subject: Re: Benchmarks of kernel tracing options (ftrace and ktrace)
From: Steven Rostedt <rostedt@goodmis.org>
To: David Sharp <dhsharp@google.com>
Cc: linux-kernel@vger.kernel.org,
        Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
        Ingo Molnar <mingo@elte.hu>, Andrew Morton <akpm@linux-foundation.org>,
        Michael Rubin <mrubin@google.com>,
        Frederic Weisbecker <fweisbec@gmail.com>
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Date: Tue, 16 Nov 2010 18:32:15 -0500
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On Tue, 2010-11-16 at 15:27 -0800, David Sharp wrote:

> Steve, Mike told me that you may have some patches to improve overhead
> of syscall tracing. I'd be interested in testing them. Can you send
> them my way?

Mike may have been confused ;-)

I did tell him that some ring buffer improvements did make it into the
kernel. You might want to try the latest mainline again.

I even have other patches that might help. I'll have to go and dig them
up.

-- Steve