[dpdk-dev] [PATCH] mbuf: replace c memcpy code semantics with optimized rte_memcpy

Olivier Matz olivier.matz at 6wind.com
Fri Jun 24 18:02:10 CEST 2016

Hi Dave,

On 06/24/2016 05:56 PM, Hunt, David wrote:
> Hi Jerin,
> I just ran a couple of tests on this patch on the latest master head on
> a couple of machines. An older quad socket E5-4650 and a quad socket
> E5-2699 v3
> E5-4650:
> I'm seeing a gain of 2% for un-cached tests and a gain of 9% on the
> cached tests.
> E5-2699 v3:
> I'm seeing a loss of 0.1% for un-cached tests and a gain of 11% on the
> cached tests.
> This is purely the autotest comparison, I don't have traffic generator
> results. But based on the above, I don't think there are any performance
> issues with the patch.

Thanks for doing the test on your side. I think it's probably enough
to integrate Jerin's patch .

About using a rte_memcpy() in the mempool_get(), I don't think I'll have
the time to do a more exhaustive test before the 16.07, so I'll come
back with it later.

I'm sending an ack on the v2 thread.

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