Thread (43 messages) 43 messages, 8 authors, 2014-10-24

Re: [RFC][PATCH 0/6] Another go at speculative page faults

From: Peter Zijlstra <peterz@infradead.org>
Date: 2014-10-21 17:25:36
Also in: lkml

On Tue, Oct 21, 2014 at 06:23:40PM +0200, Ingo Molnar wrote:
* Peter Zijlstra [off-list ref] wrote:
quoted
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% )
quoted
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.

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