From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [PATCH v6] net: batch skb dequeueing from softnet input_pkt_queue Date: Sun, 02 May 2010 23:45:55 +0200 Message-ID: <1272836755.2173.153.camel@edumazet-laptop> References: <20100429182347.GA8512@gargoyle.fritz.box> <1272568347.2209.11.camel@edumazet-laptop> <20100429214144.GA10663@gargoyle.fritz.box> <20100430.163857.180417789.davem@davemloft.net> <20100501110000.GB9434@gargoyle.fritz.box> <1272783366.2173.13.camel@edumazet-laptop> <20100502092020.GA9655@gargoyle.fritz.box> <1272797690.2173.26.camel@edumazet-laptop> <20100502154649.GA18063@gargoyle.fritz.box> <1272818131.2173.127.camel@edumazet-laptop> <20100502212550.GA2673@gargoyle.fritz.box> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: David Miller , hadi@cyberus.ca, xiaosuo@gmail.com, therbert@google.com, shemminger@vyatta.com, netdev@vger.kernel.org, lenb@kernel.org, arjan@infradead.org To: Andi Kleen Return-path: Received: from mail-bw0-f219.google.com ([209.85.218.219]:41816 "EHLO mail-bw0-f219.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754095Ab0EBVqB (ORCPT ); Sun, 2 May 2010 17:46:01 -0400 Received: by bwz19 with SMTP id 19so1004173bwz.21 for ; Sun, 02 May 2010 14:46:00 -0700 (PDT) In-Reply-To: <20100502212550.GA2673@gargoyle.fritz.box> Sender: netdev-owner@vger.kernel.org List-ID: Le dimanche 02 mai 2010 =C3=A0 23:25 +0200, Andi Kleen a =C3=A9crit : > It's pointless to send an IPI to your thread sibling for this.=20 > Everything it could do you can do yourself too with the same performa= nce. >=20 > -Andi Amen Tests just prove the reverse. I have some collegues that disable HyperThreading for exact same reasons. I wonder why Intel designed HT. Should be marketing I guess.