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

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Message-ID: <4921AD21.9020006@cosmosbay.com>
Date:	Mon, 17 Nov 2008 18:42:57 +0100
From:	Eric Dumazet <dada1@...mosbay.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Ingo Molnar <mingo@...e.hu>, 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

Linus Torvalds a écrit :
> 
> On Mon, 17 Nov 2008, Eric Dumazet wrote:
> 
>> Ingo Molnar a écrit :
> 
>>> it gives a small speedup of ~1% on my box:
>>>
>>>    before:      Throughput 3437.65 MB/sec 64 procs
>>>    after:       Throughput 3473.99 MB/sec 64 procs
>> Strange, I get 2350 MB/sec on my 8 cpus box. "tbench 8"
> 
> I think Ingo may have a Nehalem. Let's just say that those things rock, 
> and have rather good memory throughput.
> 

I want one :)

Or even two of them :)


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