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Date: Mon, 22 Aug 2005 14:15:55 -0700
From: Andrew Morton <akpm@osdl.org>
To: "David S. Miller" <davem@davemloft.net>
Cc: jasonuhl@sgi.com, tony.luck@intel.com, linux-kernel@vger.kernel.org
Subject: Re: CONFIG_PRINTK_TIME woes
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"David S. Miller" <davem@davemloft.net> wrote:
>
> I really do need sub-microsecond timings when I put a lot of
> printk tracing into the stack.

How fast is printk?  I haven't looked.

ie: if you do back-to-back printk's, what's the timestamp increment?