linux-kernel - Re: [PATCH 0/5] [GIT PULL] ring-buffer: optimize to 17% performance increase

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Message-ID: <alpine.DEB.2.00.0905121027030.13234@gandalf.stny.rr.com>
Date:	Tue, 12 May 2009 10:28:13 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Ingo Molnar <mingo@...e.hu>
cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 0/5] [GIT PULL] ring-buffer: optimize to 17% performance
 increase


On Tue, 12 May 2009, Steven Rostedt wrote:
> 
> Here's the results:
> 
> size=n inline=n  270 
> size=n inline=y  290
> size=y inline=n  315
> size=y inline=y  372 (ouch!)
> 
> Thus it seems to keep both optimizations off is best for performance.

I did not run with ring buffer off on all tests, but the last one brought 
the overhead of the test up from 87 to 130.

-- Steve

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