From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net-next] net: sctp: reorder sctp_globals to reduce cacheline usage Date: Thu, 29 Aug 2013 14:56:06 -0400 (EDT) Message-ID: <20130829.145606.1418884404797972654.davem@davemloft.net> References: <1377527640-22447-1-git-send-email-dborkman@redhat.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, linux-sctp@vger.kernel.org To: dborkman@redhat.com Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:36890 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754315Ab3H2S4I (ORCPT ); Thu, 29 Aug 2013 14:56:08 -0400 In-Reply-To: <1377527640-22447-1-git-send-email-dborkman@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Daniel Borkmann Date: Mon, 26 Aug 2013 16:34:00 +0200 > Reduce cacheline usage from 2 to 1 cacheline for sctp_globals structure. By > reordering elements, we can close gaps and simply achieve the following: > > Current situation: > /* size: 80, cachelines: 2, members: 10 */ > /* sum members: 57, holes: 4, sum holes: 16 */ > /* padding: 7 */ > /* last cacheline: 16 bytes */ > > Afterwards: > /* size: 64, cachelines: 1, members: 10 */ > /* padding: 7 */ > > Signed-off-by: Daniel Borkmann Applied.