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Date: Tue, 28 Apr 2015 11:55:06 +0100
From: Bruce Richardson <bruce.richardson@intel.com>
To: Paul Emmerich <emmericp@net.in.tum.de>
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Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] Performance regression in DPDK 1.8/2.0
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On Tue, Apr 28, 2015 at 12:43:16PM +0200, Paul Emmerich wrote:
> Hi,
> 
> sorry, I mixed up the hardware I used for my tests.
> 
> 
> Paul Emmerich <emmericp@net.in.tum.de>:
> > CPU: Intel(R) Xeon(R) CPU E3-1230 v2
> > TurboBoost and HyperThreading disabled.
> > Frequency fixed at 3.30 GHz via acpi_cpufreq.
> 
> The CPU frequency was fixed at 1.60 GHz to enforce
> a CPU bottleneck.
> 
> 
> My original post said that I used a Xeon E5-2620 v3
> at 1.2 GHz, this is incorrect. The calculation for Cycles/Pkt
> in the original post used the correct 1.6 GHz figure, though.
> 
> (I used the E5 CPU for the evaluation of my packet generator
> performance with 1.7.1/2.0.0, not for the l2fwd test.)
> 
> 
> Sorry for the confusion.
> 
> 
> Paul
Thanks for the update - we are investigating.

/Bruce