From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [PATCH] ipv4: Fix input route performance regression. Date: Fri, 27 Jul 2012 00:16:29 +0200 Message-ID: <1343340989.2626.12087.camel@edumazet-glaptop> References: <20120726.141438.1996323620706359167.davem@davemloft.net> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: alexander.duyck@gmail.com, netdev@vger.kernel.org To: David Miller Return-path: Received: from mail-wi0-f172.google.com ([209.85.212.172]:57351 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753114Ab2GZWQe (ORCPT ); Thu, 26 Jul 2012 18:16:34 -0400 Received: by wibhm11 with SMTP id hm11so6862965wib.1 for ; Thu, 26 Jul 2012 15:16:33 -0700 (PDT) In-Reply-To: <20120726.141438.1996323620706359167.davem@davemloft.net> Sender: netdev-owner@vger.kernel.org List-ID: On Thu, 2012-07-26 at 14:14 -0700, David Miller wrote: > With the routing cache removal we lost the "noref" code paths on > input, and this can kill some routing workloads. > > Reinstate the noref path when we hit a cached route in the FIB > nexthops. > > With help from Eric Dumazet. > > Reported-by: Alexander Duyck > Signed-off-by: David S. Miller Signed-off-by: Eric Dumazet Thanks !