From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: TCPBacklogDrops during aggressive bursts of traffic Date: Tue, 22 May 2012 11:25:59 +0200 Message-ID: <1337678759.3361.147.camel@edumazet-glaptop> References: <1337092718.1689.45.camel@kjm-desktop.uk.level5networks.com> <1337093776.8512.1089.camel@edumazet-glaptop> <1337099368.1689.47.camel@kjm-desktop.uk.level5networks.com> <1337099641.8512.1102.camel@edumazet-glaptop> <1337100454.2544.25.camel@bwh-desktop.uk.solarflarecom.com> <1337101280.8512.1108.camel@edumazet-glaptop> <1337272292.1681.16.camel@kjm-desktop.uk.level5networks.com> <1337272654.3403.20.camel@edumazet-glaptop> <1337674831.1698.7.camel@kjm-desktop.uk.level5networks.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Ben Hutchings , netdev@vger.kernel.org To: Kieran Mansley Return-path: Received: from mail-bk0-f46.google.com ([209.85.214.46]:40064 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757034Ab2EVJ0E (ORCPT ); Tue, 22 May 2012 05:26:04 -0400 Received: by bkcji2 with SMTP id ji2so4749493bkc.19 for ; Tue, 22 May 2012 02:26:02 -0700 (PDT) In-Reply-To: <1337674831.1698.7.camel@kjm-desktop.uk.level5networks.com> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, 2012-05-22 at 09:20 +0100, Kieran Mansley wrote: > On Thu, 2012-05-17 at 18:37 +0200, Eric Dumazet wrote: > > > > With net-next and tcp coalescing, I no longer have TCPBacklogDrops / > > collapses, but I dont have sfc card/driver. > > I can still reproduce them on net-next. > > Kieran Can you reproduce this with tg3 NIC for example ?