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Date: Fri, 5 Dec 2008 07:37:48 -0800
Message-ID: <33307c790812050737l6a990685p619b32ac38f6491@mail.gmail.com>
Subject: Re: [RFC PATCH 3/3] kernel tracing prototype
From: Martin Bligh <mbligh@google.com>
To: "Frank Ch. Eigler" <fche@redhat.com>
Cc: Jiaying Zhang <jiayingz@google.com>, Steven Rostedt <srostedt@redhat.com>,
       linux-kernel@vger.kernel.org, Michael Rubin <mrubin@google.com>,
       Michael Davidson <md@google.com>,
       Andrew Morton <akpm@linux-foundation.org>
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>> - vanilla 2.6.26 kernel, CONFIG_MARKERS=n
>> Throughput 759.352 MB/sec 4
>> - markers compiled in, tracing disabled
>> Throughput 754.18 MB/sec 4
>
> Is your kernel built with -freorder-blocks?  This option dramatically
> reduces the cost of inactive markers/tracepoints.

I'm curious why we wouldn't turn that on by default in the makefile?
At least if CONFIG_MARKERS is on.
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