linux-kernel - Re: [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28

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Message-ID: <alpine.LFD.2.00.0811171030180.3468@nehalem.linux-foundation.org>
Date:	Mon, 17 Nov 2008 10:33:19 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Ingo Molnar <mingo@...e.hu>
cc:	Eric Dumazet <dada1@...mosbay.com>,
	David Miller <davem@...emloft.net>, rjw@...k.pl,
	linux-kernel@...r.kernel.org, kernel-testers@...r.kernel.org,
	cl@...ux-foundation.org, efault@....de, a.p.zijlstra@...llo.nl,
	Stephen Hemminger <shemminger@...tta.com>
Subject: Re: [Bug #11308] tbench regression on each kernel release from 2.6.22
 -&gt; 2.6.28



On Mon, 17 Nov 2008, Ingo Molnar wrote:
> 
> hm, i'm not sure whether i can post benchmarks from the Nehalem box - 
> but i can confirm it in general terms that it's rather nice ;-)

Intel released the NDA from various web sites a week or two ago, and Intel 
is now selling it in the US (I think today was in fact the official 
launch), so I think benchmarks are safe - you can buy the dang things on 
the street.

I don't know what availability is, of course. But I doubt that Intel would 
mind Nehalem benchmarks even if it were a paper launch - at least from my 
personal experience, I've not seen any bad behavior (and plenty of good).

> This was run on another testbox (4x4 Barcelona) that rocks similarly 
> well in terms of memory subsystem latencies: which seems to be 
> tbench's main current critical path.

Ahh, ok.

			Linus
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