From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [PATCH v4 0/10] bql: Byte Queue Limits Date: Tue, 29 Nov 2011 08:07:56 +0100 Message-ID: <1322550476.2970.74.camel@edumazet-laptop> References: <1322550138.2970.70.camel@edumazet-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Tom Herbert , davem@davemloft.net, netdev@vger.kernel.org To: Dave Taht Return-path: Received: from mail-ey0-f174.google.com ([209.85.215.174]:37301 "EHLO mail-ey0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751904Ab1K2HIC (ORCPT ); Tue, 29 Nov 2011 02:08:02 -0500 Received: by eaak14 with SMTP id k14so2671390eaa.19 for ; Mon, 28 Nov 2011 23:08:01 -0800 (PST) In-Reply-To: <1322550138.2970.70.camel@edumazet-laptop> Sender: netdev-owner@vger.kernel.org List-ID: Le mardi 29 novembre 2011 =C3=A0 08:02 +0100, Eric Dumazet a =C3=A9crit= : > TSO on means a low priority 65Kbytes packet can be in TX ring right > before the high priority packet. If you cant afford the delay, you lo= se. >=20 By the way, I hope TSO is off for wifi adapters. At least here its off.. # ethtool -k wlan0 Offload parameters for wlan0: rx-checksumming: off tx-checksumming: off scatter-gather: off tcp-segmentation-offload: off udp-fragmentation-offload: off generic-segmentation-offload: off generic-receive-offload: on large-receive-offload: off rx-vlan-offload: off tx-vlan-offload: off ntuple-filters: off receive-hashing: off 0c:00.0 Network controller: Broadcom Corporation BCM4311 802.11a/b/g (r= ev 01)