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Date: Wed, 22 Oct 2014 14:35:23 +0200
From: Ingo Molnar <mingo@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: torvalds@linux-foundation.org, paulmck@linux.vnet.ibm.com,
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Subject: Re: [RFC][PATCH 0/6] Another go at speculative page faults
Message-ID: <20141022123523.GA24499@gmail.com>
References: <20141020215633.717315139@infradead.org>
 <20141021162340.GA5508@gmail.com>
 <20141021172527.GH3219@twins.programming.kicks-ass.net>
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* Peter Zijlstra <peterz@infradead.org> wrote:

> On Tue, Oct 21, 2014 at 06:23:40PM +0200, Ingo Molnar wrote:
> > 
> > * Peter Zijlstra <peterz@infradead.org> wrote:
> > 
> > > My Ivy Bridge EP (2*10*2) has a ~58% improvement in pagefault throughput:
> > > 
> > > PRE:
> > >        149,441,555      page-faults                  ( +-  1.25% )
> > >
> > > POST:
> > >        236,442,626      page-faults                  ( +-  0.08% )
> > 
> > > My Ivy Bridge EX (4*15*2) has a ~78% improvement in pagefault throughput:
> > > 
> > > PRE:
> > >        105,789,078      page-faults                 ( +-  2.24% )
> > >
> > > POST:
> > >        187,751,767      page-faults                 ( +-  2.24% )
> > 
> > I guess the 'PRE' and 'POST' numbers should be flipped around?
> 
> Nope, its the number of page-faults serviced in a fixed amount of time
> (60 seconds), therefore higher is better.

Ah, okay!

Thanks,

	Ingo
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