From: Jesper Dangaard Brouer <brouer@redhat.com>
To: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>,
netdev@vger.kernel.org, therbert@google.com,
"David S. Miller" <davem@davemloft.net>,
Alexander Duyck <alexander.h.duyck@intel.com>,
toke@toke.dk, Florian Westphal <fw@strlen.de>,
Dave Taht <dave.taht@gmail.com>,
John Fastabend <john.r.fastabend@intel.com>,
Daniel Borkmann <dborkman@redhat.com>,
Hannes Frederic Sowa <hannes@stressinduktion.org>,
brouer@redhat.com
Subject: Re: [net-next PATCH 1/1 V4] qdisc: bulk dequeue support for qdiscs with TCQ_F_ONETXQUEUE
Date: Thu, 25 Sep 2014 10:25:05 +0200 [thread overview]
Message-ID: <20140925102505.494acab1@redhat.com> (raw)
In-Reply-To: <54234225.5000503@mojatatu.com>
On Wed, 24 Sep 2014 18:13:57 -0400
Jamal Hadi Salim <jhs@mojatatu.com> wrote:
> On 09/24/14 13:58, Jesper Dangaard Brouer wrote:
> > On Wed, 24 Sep 2014 10:23:15 -0700
> > Eric Dumazet <eric.dumazet@gmail.com> wrote:
> >
>
> >
> >> pktgen is nice, but do not represent the majority of the traffic we send
> >> from high performance host where we want this bulk dequeue thing ;)
> >
> > This patch is actually targetted towards more normal use-cases.
> > Pktgen cannot even use this work, as it bypass the qdisc layer...
>
> When you post these patches - can you please also post basic performance
> numbers? You dont have to show improvement if it is hard for bulking
> to kick in, but you need to show no harm in at least latency for the
> general use case (i.e not pktgen maybe forwarding activity or something
> sourced from tcp).
I've done measurements with netperf-wrapper:
http://netoptimizer.blogspot.dk/2014/09/mini-tutorial-for-netperf-wrapper-setup.html
I have already previously posted my measurements here:
http://people.netfilter.org/hawk/qdisc/
http://people.netfilter.org/hawk/qdisc/measure01/
http://people.netfilter.org/hawk/qdisc/experiment01/
Please, see my previous mail where I described each graph.
The above measurements is for 10Gbit/s, but I've also done measurements
on 1Gbit/s driver igb, and 10Mbit/s by forcing igb to use 10Mbit/s.
Those results I forgot upload (and I cannot upload them right now, as
I'm currently in Switzerland).
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Sr. Network Kernel Developer at Red Hat
Author of http://www.iptv-analyzer.org
LinkedIn: http://www.linkedin.com/in/brouer
next prev parent reply other threads:[~2014-09-25 8:25 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-24 16:10 [net-next PATCH 0/1 V4] qdisc bulk dequeuing and utilizing delayed tailptr updates Jesper Dangaard Brouer
2014-09-24 16:12 ` [net-next PATCH 1/1 V4] qdisc: bulk dequeue support for qdiscs with TCQ_F_ONETXQUEUE Jesper Dangaard Brouer
2014-09-24 17:23 ` Eric Dumazet
2014-09-24 17:58 ` Jesper Dangaard Brouer
2014-09-24 18:34 ` Tom Herbert
2014-09-24 19:22 ` Eric Dumazet
2014-09-25 2:12 ` Eric Dumazet
2014-09-25 2:38 ` Tom Herbert
2014-09-25 2:58 ` Dave Taht
2014-09-26 18:06 ` Eric Dumazet
2014-09-25 23:40 ` Eric Dumazet
2014-09-26 6:04 ` [PATCH net-next] dql: dql_queued() should write first to reduce bus transactions Eric Dumazet
2014-09-26 8:47 ` Jesper Dangaard Brouer
2014-09-26 11:06 ` Hannes Frederic Sowa
2014-09-26 12:02 ` Eric Dumazet
2014-09-28 21:43 ` David Miller
2014-09-26 9:23 ` [net-next PATCH 1/1 V4] qdisc: bulk dequeue support for qdiscs with TCQ_F_ONETXQUEUE David Laight
2014-09-26 13:16 ` David Laight
2014-09-26 13:38 ` Eric Dumazet
2014-09-24 22:13 ` Jamal Hadi Salim
2014-09-25 8:25 ` Jesper Dangaard Brouer [this message]
2014-09-25 12:48 ` Jamal Hadi Salim
2014-09-25 14:40 ` Tom Herbert
2014-09-25 14:57 ` Jesper Dangaard Brouer
2014-09-25 15:05 ` Tom Herbert
2014-09-25 15:23 ` Jesper Dangaard Brouer
2014-09-25 15:58 ` Tom Herbert
2014-09-29 20:23 ` Jesper Dangaard Brouer
2014-09-29 20:14 ` Jesper Dangaard Brouer
2014-09-25 15:12 ` Eric Dumazet
2014-09-25 13:52 ` Dave Taht
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=20140925102505.494acab1@redhat.com \
--to=brouer@redhat.com \
--cc=alexander.h.duyck@intel.com \
--cc=dave.taht@gmail.com \
--cc=davem@davemloft.net \
--cc=dborkman@redhat.com \
--cc=eric.dumazet@gmail.com \
--cc=fw@strlen.de \
--cc=hannes@stressinduktion.org \
--cc=jhs@mojatatu.com \
--cc=john.r.fastabend@intel.com \
--cc=netdev@vger.kernel.org \
--cc=therbert@google.com \
--cc=toke@toke.dk \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.