Subject: Re: [PATCH [RT] 00/14] RFC - adaptive real-time locks
From: "Peter W. Morreale" <pmorreale@novell.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Gregory Haskins <ghaskins@novell.com>, a.p.zijlstra@chello.nl,
       tglx@linutronix.de, rostedt@goodmis.org, linux-rt-users@vger.kernel.org,
       linux-kernel@vger.kernel.org, bill.huey@gmail.com, kevin@hilman.org,
       cminyard@mvista.com, dsingleton@mvista.com, dwalker@mvista.com,
       npiggin@suse.de, dsaxena@plexity.net, ak@suse.de, gregkh@suse.de,
       sdietrich@novell.com, mkohari@novell.com
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Organization: Linux Solutions Group
Date: Thu, 21 Feb 2008 15:42:06 -0700
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On Thu, 2008-02-21 at 15:12 -0700, Peter W. Morreale wrote:

> True, the ticket spinlock certainly adds to the throughput results we
> have seen.  However, the results without the ticket patch are still very
> significant.   (IIRC, 500-600MB/s instead of the ~730MB/s advertised) We
> can easily re-gen the previous results for an apples-to-apples
> comparison.
> 

I misspoke in the above.  Greg is correct.  Without the ticket lock
patch we see an *improvement* in throughput, not a decrease.  

Sorry for any confusion.

Best,
-PWM


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