From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Lameter Subject: Re: [PATCH] net: Fix struct sock bitfield annotation Date: Fri, 9 Oct 2009 15:39:55 -0400 (EDT) Message-ID: References: <4ACE023D.9030208@gmail.com> <19f34abd0910081454v51455ee0p30ad6715b5ee31c0@mail.gmail.com> <4ACE8CEC.3020905@gmail.com> <4ACE95E1.30301@gmail.com> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: "David S. Miller" , Vegard Nossum , Linux Netdev List , Ingo Molnar To: Eric Dumazet Return-path: Received: from smtp2.ultrahosting.com ([74.213.174.253]:47921 "EHLO smtp.ultrahosting.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754712AbZJITrF (ORCPT ); Fri, 9 Oct 2009 15:47:05 -0400 Received: from localhost (smtp.ultrahosting.com [127.0.0.1]) by smtp.ultrahosting.com (Postfix) with ESMTP id 0724582C495 for ; Fri, 9 Oct 2009 15:50:28 -0400 (EDT) Received: from smtp.ultrahosting.com ([74.213.174.253]) by localhost (smtp.ultrahosting.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id H1TClgsducVt for ; Fri, 9 Oct 2009 15:50:27 -0400 (EDT) Received: from gentwo.org (unknown [74.213.171.31]) by smtp.ultrahosting.com (Postfix) with ESMTP id D0F1C82C644 for ; Fri, 9 Oct 2009 15:50:15 -0400 (EDT) In-Reply-To: <4ACE95E1.30301@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: On Fri, 9 Oct 2009, Eric Dumazet wrote: > For networking guys, here is the actual mess with "struct sock" on x86_64, > related to UDP handling (critical latencies for some people). We basically touch > all cache lines, in every paths, bad effects on SMP... Please keep me posted on this. I am very interested in this work. Some simple shuffling around may do some good here.