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To: Eelco Chaudron <echaudro@redhat.com>, jingjing.wu@intel.com
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From: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
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Date: Fri, 29 Sep 2017 09:07:18 +0100
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Subject: Re: [dpdk-dev] [PATCH] app/testpmd: adds mlockall() to fix pages
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On 12/09/2017 14:08, Eelco Chaudron wrote:
> Call the mlockall() function, to attempt to lock all of its process
> memory into physical RAM, and preventing the kernel from paging any
> of its memory to disk.
>
> When using testpmd for performance testing, depending on the code path
> taken, we see a couple of page faults in a row. These faults effect
> the overall drop-rate of testpmd. On Linux the mlockall() call will
> prefault all the pages of testpmd (and the DPDK libraries if linked
> dynamically), even without LD_BIND_NOW.
>
> Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
> ---

When used for performance testing using hugepages or --no-huge option?

Thanks,
Sergio