From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: Kernel rwlock design, Multicore and IGMP Date: Mon, 15 Nov 2010 12:31:12 +0100 Message-ID: <1289820672.2607.10.camel@edumazet-laptop> References: <1289489007.17691.1310.camel@edumazet-laptop> <4CDF1945.8090101@tilera.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Chris Metcalf , =?ISO-8859-1?Q?Am=E9rico?= Wang , linux-kernel@vger.kernel.org, netdev To: Cypher Wu Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Le lundi 15 novembre 2010 =C3=A0 19:18 +0800, Cypher Wu a =C3=A9crit : > In that post I want to confirm another thing: if we join/leave on > different cores that every call will start the timer for IGMP message > using the same in_dev->mc_list, could that be optimized? >=20 Which timer exactly ? Is it a real scalability problem ? I believe RTNL would be the blocking point actually...