From: Aaron Conole <aconole@redhat.com>
To: Eelco Chaudron <echaudro@redhat.com>
Cc: jingjing.wu@intel.com, dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] app/testpmd: adds mlockall() to fix pages
Date: Tue, 12 Sep 2017 10:50:58 -0400 [thread overview]
Message-ID: <f7to9qgynql.fsf@dhcp-25-97.bos.redhat.com> (raw)
In-Reply-To: <22990026376b08418cb0eb6f028840c03e89f47f.1505221429.git.echaudro@redhat.com> (Eelco Chaudron's message of "Tue, 12 Sep 2017 15:08:44 +0200")
Eelco Chaudron <echaudro@redhat.com> writes:
> 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>
> ---
Acked-by: Aaron Conole <aconole@redhat.com>
next prev parent reply other threads:[~2017-09-12 14:51 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-12 13:08 Eelco Chaudron
2017-09-12 14:50 ` Aaron Conole [this message]
2017-09-12 20:14 ` Thomas Monjalon
2017-09-12 20:29 ` Aaron Conole
2017-09-12 22:13 ` Thomas Monjalon
2017-09-13 8:55 ` Eelco Chaudron
2017-09-13 12:28 ` Aaron Conole
2017-09-13 9:15 ` Maxime Coquelin
2017-09-13 9:39 ` Thomas Monjalon
2017-09-14 7:22 ` Eelco Chaudron
2017-09-19 7:28 ` Olivier MATZ
2017-09-21 12:24 ` Eelco Chaudron
2017-09-25 7:53 ` Olivier MATZ
2017-09-29 7:59 ` Eelco Chaudron
2017-09-29 8:07 ` Sergio Gonzalez Monroy
2017-09-29 8:15 ` Eelco Chaudron
2017-09-29 9:27 ` Sergio Gonzalez Monroy
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