Re: [dpdk-dev] [PATCH] app/testpmd: adds mlockall() to fix pages

[Maxime Coquelin <maxime.coquelin@redhat.com>]

On 09/12/2017 03:08 PM, 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>
> ---
>   app/test-pmd/testpmd.c | 3 +++
>   1 file changed, 3 insertions(+)
> 

Acked-by: Maxime Coquelin <maxime.coquelin@redhat.com>

Thanks,
Maxime