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

[Thomas Monjalon]

12/09/2017 15:08, Eelco Chaudron:
> 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.

Does it work on FreeBSD?
Is there any drawback?
Do we need to add an option for it?