DPDK usage discussions
 help / color / mirror / Atom feed
From: Shahaf Shuler <shahafs@mellanox.com>
To: Arjun Roy <arroy@eng.ucsd.edu>, "users@dpdk.org" <users@dpdk.org>
Subject: Re: [dpdk-users] Mellanox ConnectX-4, DPDK and extreme latency issues
Date: Thu, 29 Jun 2017 05:26:02 +0000	[thread overview]
Message-ID: <VI1PR05MB3149F11F671A477F2CA7254BC3D20@VI1PR05MB3149.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <CAE8+G=FqBd7j1y7d3hvOiB+zTMZRp1iENpKeux=6-Xyi14yjjA@mail.gmail.com>

Hi Arjun,

Thursday, June 22, 2017 9:40 PM, Arjun Roy,
> 
> Greetings all.
> 
> I have a weird issue regarding excessive latency using Mellanox ConnectX-4
> 100Gbe cards, DPDK and packet forwarding. Specifically: running the l3fwd
> and basicfwd DPDK example programs yields ping latencies of several (5-8)
> milliseconds. I tried the same test using an Intel X-540 AT2 card on the same
> systems and the latency was on the order of 4-5 microseconds.

Thanks for reporting.
This is the first time we hit such scenario, we will check it internally and will get back to you with answers. 

  reply	other threads:[~2017-06-29  5:26 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-22 18:39 Arjun Roy
2017-06-29  5:26 ` Shahaf Shuler [this message]
2017-09-04 15:52   ` Adrien Mazarguil
2017-09-04 17:12     ` Nélio Laranjeiro

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=VI1PR05MB3149F11F671A477F2CA7254BC3D20@VI1PR05MB3149.eurprd05.prod.outlook.com \
    --to=shahafs@mellanox.com \
    --cc=arroy@eng.ucsd.edu \
    --cc=users@dpdk.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).