From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from uplift.swm.pp.se (ipv6.swm.pp.se [IPv6:2a00:801::f]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id B86B33B2C7 for ; Fri, 12 Feb 2016 03:40:39 -0500 (EST) Received: by uplift.swm.pp.se (Postfix, from userid 501) id 5F636A2; Fri, 12 Feb 2016 09:40:37 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=swm.pp.se; s=mail; t=1455266437; bh=CObI4Lefx2mEBPXy08wfSrjChpzt2HiIm/jCRxVPrFU=; h=Date:From:To:cc:Subject:In-Reply-To:References:From; b=TKMGTd+o0UvVxXVp7ZVmqblL4Z++vPNug9REUeCBkXQLQAmu0oXfy4dV40Z3j2+0Q 1B4iz2mewYHnYWaPKts7tB03VmcjC2Lz+Gqs4vVolqZiZRdUdfPuwy5wY3lczxsogV ppbiBucCtBA9OuYdekwyYrLB/+xPbIvrNhecFsPw= Received: from localhost (localhost [127.0.0.1]) by uplift.swm.pp.se (Postfix) with ESMTP id 2F645A1; Fri, 12 Feb 2016 09:40:37 +0100 (CET) Date: Fri, 12 Feb 2016 09:40:37 +0100 (CET) From: Mikael Abrahamsson To: =?ISO-8859-15?Q?Dave_T=E4ht?= cc: bloat@lists.bufferbloat.net In-Reply-To: <56BCDB72.1000702@taht.net> Message-ID: References: <56BCDB72.1000702@taht.net> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) Organization: People's Front Against WWW MIME-Version: 1.0 Content-Type: MULTIPART/MIXED; BOUNDARY="-137064504-132535028-1455266437=:11524" Subject: Re: [Bloat] new "vector packet processing" based effort to speed up networking X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 12 Feb 2016 08:40:39 -0000 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. ---137064504-132535028-1455266437=:11524 Content-Type: TEXT/PLAIN; charset=utf-8; format=flowed Content-Transfer-Encoding: 8BIT On Thu, 11 Feb 2016, Dave Täht wrote: > Someone asked me recently what I thought of the dpdk. I said: > "It's a great way to heat datacenters". Still, there's momentum it > seems, to move more stuff into userspace. Especially now that Intel CPUs seem to be able to push a lot of PPS compared to what they could before. A lot more. What one has to take into account is that this tech is most likely going to be deployed on servers with 10GE NICs or even 25/40/100GE, and they are most likely going to be connected to a small buffer datacenter switch which will do FIFO on extremely small shared buffer memory (we're talking small fractions of a millisecond of buffer at 10GE speed), and usually lots of these servers will be behind oversubscribed interconnect links between switches. A completely different use case would of course be if someone started to create midrange enterprise routers with 1GE/10GE ports using this technology, then it would of course make a lot of sense to have proper AQM. I have no idea what kind of performance one can expect out of a low power Intel CPU that might fit into one of these... -- Mikael Abrahamsson email: swmike@swm.pp.se ---137064504-132535028-1455266437=:11524--