From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ig0-x231.google.com (mail-ig0-x231.google.com [IPv6:2607:f8b0:4001:c05::231]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 6811A3B2A0 for ; Wed, 27 Apr 2016 15:32:15 -0400 (EDT) Received: by mail-ig0-x231.google.com with SMTP id bi2so138165717igb.0 for ; Wed, 27 Apr 2016 12:32:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc; bh=1Wwnn1nz9Q6GX7izl40f1GyxvRGZ0C21PLNMbd3OZZM=; b=tOL8CSA2eEQ1nVY+4yySuq/4YZ88hCV8xHwINoCAf2p2Ic2LbfGRSk18qWex8pH9P7 xdOn9FA53CekOoOr1uyJBA3RgSLbDH55MuYsPDu84mE8PFJVlexoEh0oS1EEGW4RALp6 RLsCZu9tjgaetPfTluwV/OFYivTqeBZneGHYz3n35SECGLVPCGdPeM6BfitxMTL1jnAL geWqfbWmgAadfOQqenzXz6toU5wwCq67X/PMFRVT0j2jHsZ+ZOlg2p9VSem6jpGxh8uK t2UOeFu7x7ZSGPrylAnl57yGsvi/hl8PGzUx7Fts9AA3CAakCoAgZzm/Xt6oBbZo6O17 NSvQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc; bh=1Wwnn1nz9Q6GX7izl40f1GyxvRGZ0C21PLNMbd3OZZM=; b=JN2TlTk+AdoV2xwaIaZxJ4VkUp0fC6bT0l7ggcXpyR8LJjTv41STiF1DsZDJn2P+2u ltjI0PzRpURizkTHNivdBnzmTJ13ekIUj9oX0v50LB1gv/ad/rIKn5V+hGN6KS/cxhTF JrIJfkxOcV5Qwux3WWaIbRP4ImAALFsntHdaXKCgLBgbkmuHMZpeE9zgNxUrMVY1Z3uj JnqU4pGeYPU3EutuGYpGVgDuXWkSZSHQHUQFHtOsy2rce/R8r1L3kkrrzvgNgz7VkGQc G/uS99rKHXD+YWI6njONaQX8YliRaB9ob9UWV8MUVPU1uevK+ONk8NymmDlx+EO4ZbD8 RpuQ== X-Gm-Message-State: AOPr4FXF2Jo/uvpseOO+Hk+zigu9v7cNRCbk0zHLyIJXdOlyyqONJouI8jVZQ8ML4J6mgwXOEiuXtC6S6SQ2Aw== MIME-Version: 1.0 X-Received: by 10.50.61.243 with SMTP id t19mr13563669igr.0.1461785534632; Wed, 27 Apr 2016 12:32:14 -0700 (PDT) Received: by 10.64.124.228 with HTTP; Wed, 27 Apr 2016 12:32:14 -0700 (PDT) In-Reply-To: References: Date: Wed, 27 Apr 2016 12:32:14 -0700 Message-ID: From: Stephen Hemminger To: Aaron Wood Cc: Dave Taht , cake@lists.bufferbloat.net, bloat Content-Type: multipart/alternative; boundary=047d7bdc0a4e87b09a05317c77e6 Subject: Re: [Cake] [Bloat] are anyone playing with dpdk and vpp? X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Apr 2016 19:32:15 -0000 --047d7bdc0a4e87b09a05317c77e6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable DPDK gets impressive performance on large systems (like 14M packets/sec per core), but not convinced on smaller systems. Performance depends on having good CPU cache. I get poor performance on Atom etc. Also driver support is limited (mostly 10G and above) On Wed, Apr 27, 2016 at 12:28 PM, Aaron Wood wrote: > I'm looking at DPDK for a project, but I think I can make substantial > gains with just AF_PACKET + FANOUT and SO_REUSEPORT. It's not clear to m= y > yet how much DPDK is going to gain over those (and those can go a long wa= y > on higher-powered platforms). > > On lower-end systems, I'm more suspicious of the memory bus (and the cach= e > in particular), than I am the raw CPU power. > > -Aaron > > On Wed, Apr 27, 2016 at 11:57 AM, Dave Taht wrote: > >> https://fd.io/technology seems to have come a long way. >> >> -- >> Dave T=C3=A4ht >> Let's go make home routers and wifi faster! With better software! >> http://blog.cerowrt.org >> _______________________________________________ >> Bloat mailing list >> Bloat@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/bloat >> > > > _______________________________________________ > Cake mailing list > Cake@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/cake > > --047d7bdc0a4e87b09a05317c77e6 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
DPDK gets impressive performance on large systems (like 14= M packets/sec per core), but not convinced on smaller systems.
Performa= nce depends on having good CPU cache. I get poor performance on Atom etc.
Also driver support is limited (mostly 10G and above)
<= div class=3D"gmail_extra">
On Wed, Apr 27, 20= 16 at 12:28 PM, Aaron Wood <woody77@gmail.com> wrote:
I'm looking at DPDK for a = project, but I think I can make substantial gains with just AF_PACKET + FAN= OUT and SO_REUSEPORT.=C2=A0 It's not clear to my yet how much DPDK is g= oing to gain over those (and those can go a long way on higher-powered plat= forms).

On lower-end systems, I'm more suspicious of= the memory bus (and the cache in particular), than I am the raw CPU power.=

-Aaron

=
On Wed, Apr 27, 2016 at 11:57 A= M, Dave Taht <dave.taht@gmail.com> wrote:
https://fd.io/technology seems= to have come a long way.

--
Dave T=C3=A4ht
Let's go make home routers and wifi faster! With better software!
ht= tp://blog.cerowrt.org
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