From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rick Jones Subject: Re: rps perfomance WAS(Re: rps: question Date: Thu, 15 Apr 2010 09:41:18 -0700 Message-ID: <4BC741AE.3000108@hp.com> References: <1271268242.16881.1719.camel@edumazet-laptop> <1271271222.4567.51.camel@bigi> <20100415.014857.168270765.davem@davemloft.net> <1271332528.4567.150.camel@bigi> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: David Miller , eric.dumazet@gmail.com, therbert@google.com, netdev@vger.kernel.org, robert@herjulf.net, xiaosuo@gmail.com, andi@firstfloor.org To: hadi@cyberus.ca Return-path: Received: from g5t0009.atlanta.hp.com ([15.192.0.46]:6112 "EHLO g5t0009.atlanta.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752801Ab0DOQlX (ORCPT ); Thu, 15 Apr 2010 12:41:23 -0400 In-Reply-To: <1271332528.4567.150.camel@bigi> Sender: netdev-owner@vger.kernel.org List-ID: > > I speculate again that it may be too costly to run rps on something like > a tigerton or intel clovertown where you have cores sharing/contending > for an FSB. If I can get answers to the question: "What h/ware are > people running?" i could be proven wrong. > [Note: I am not against RPS - i think it has its place; so i hope my > desire to find out when to use rps doesnt show as hostility towards > rps.] IPS (~= RPS) was running on shared FSB HP9000's. Now, that was also a BSD networking stack with netisrq's and the like. TOPS (~= RFS) was also run on shared FSB HP9000s, as well as CC-NUMA HP9000s and Integrity systems. TOPS was implemented in a Streams-based stack tracing its history to a common ancestor with Solaris (Mentat). rick jones