From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 19 Nov 2001 12:09:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 19 Nov 2001 12:08:55 -0500 Received: from mailrelay1.lrz-muenchen.de ([129.187.254.101]:54833 "EHLO mailrelay1.lrz-muenchen.de") by vger.kernel.org with ESMTP id ; Mon, 19 Nov 2001 12:08:49 -0500 From: Oliver Neukum To: linux-kernel@vger.kernel.org Subject: asymmetric speeds in ftp transfers between linux boxes Date: Mon, 19 Nov 2001 18:06:59 +0100 X-Mailer: KMail [version 1.1.99] Content-Type: text/plain; charset=US-ASCII MIME-Version: 1.0 Message-Id: <01111918065906.01742@argo> Content-Transfer-Encoding: 7BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, I did an ftp transfer from linux-2.4.15-pre4(ppc) to linux-2.4.10-SuSE(i386) over ethernet and got only 35K/s. In the reverse direction close to 900K/s were achieved. No errors were registered in either case. The problem is repeatable and occured also with 2.4.14(ppc) in place of 2.4.15-pre4. HTH Oliver part of tcpdump (argo is 2.4.15-pre4 on ppc): 15:32:55.150073 argo.neukum.org.32922 > 192.168.232.9.32932: . 2943234091:2943235539(1448) ack 3088371784 win 5792 (DF) 15:32:55.151530 192.168.232.9.32932 > argo.neukum.org.32922: . 1:1(0) ack 3639 win 47784 (DF) [tos 0x8] 15:32:55.151662 192.168.232.9.32932 > argo.neukum.org.32922: F 1:1(0) ack 3639 win 47784 (DF) [tos 0x8] 15:32:55.151746 argo.neukum.org.32922 > 192.168.232.9.32932: . 3639:3639(0) ack 2 win 5792 (DF) [tos 0x8] 15:32:55.151794 192.168.232.9.32783 > argo.neukum.org.ftp: P 1908125332:1908125356(24) ack 1773235573 win 2920 (DF) [tos 0x10] 15:32:55.152160 argo.neukum.org.ftp > 192.168.232.9.32783: P 1:21(20) ack 24 win 5792 (DF) [tos 0x10] 15:32:55.152371 192.168.232.9.32783 > argo.neukum.org.ftp: . 24:24(0) ack 21 win 2920 (DF) [tos 0x10] 15:32:55.152803 192.168.232.9.32783 > argo.neukum.org.ftp: P 24:48(24) ack 21 win 2920 (DF) [tos 0x10] 15:32:55.152946 argo.neukum.org.ftp > 192.168.232.9.32783: P 21:33(12) ack 48 win 5792 (DF) [tos 0x10] 15:32:55.153205 192.168.232.9.32783 > argo.neukum.org.ftp: P 48:54(6) ack 33 win 2920 (DF) [tos 0x10] 15:32:55.153427 argo.neukum.org.ftp > 192.168.232.9.32783: P 33:81(48) ack 54 win 5792 (DF) [tos 0x10] 15:32:55.153763 192.168.232.9.32933 > argo.neukum.org.32923: S 3094161908:3094161908(0) win 5840 (DF) 15:32:55.153841 argo.neukum.org.32923 > 192.168.232.9.32933: S 2943388716:2943388716(0) ack 3094161909 win 5792 (DF) 15:32:55.154043 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack 1 win 2920 (DF) 15:32:55.154133 192.168.232.9.32783 > argo.neukum.org.ftp: P 54:78(24) ack 81 win 2920 (DF) [tos 0x10] 15:32:55.154366 argo.neukum.org.ftp > 192.168.232.9.32783: P 81:162(81) ack 78 win 5792 (DF) [tos 0x10] 15:32:55.156841 argo.neukum.org.32923 > 192.168.232.9.32933: . 1:1449(1448) ack 1 win 5792 (DF) 15:32:55.156891 argo.neukum.org.32923 > 192.168.232.9.32933: . 1449:2897(1448) ack 1 win 5792 (DF) 15:32:55.158290 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack 1449 win 4344 (DF) [tos 0x8] 15:32:55.158358 argo.neukum.org.32923 > 192.168.232.9.32933: P 2897:4345(1448) ack 1 win 5792 (DF) 15:32:55.158367 argo.neukum.org.32923 > 192.168.232.9.32933: . 4345:5793(1448) ack 1 win 5792 (DF) 15:32:55.162076 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack 2897 win 5792 (DF) [tos 0x8] 15:32:55.162108 argo.neukum.org.32923 > 192.168.232.9.32933: . 5793:7241(1448) ack 1 win 5792 (DF) 15:32:55.163537 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack 2897 win 5792 (DF) [tos 0x8] 15:32:55.163582 argo.neukum.org.32923 > 192.168.232.9.32933: P 7241:8689(1448) ack 1 win 5792 (DF) 15:32:55.165008 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack 2897 win 5792 (DF) [tos 0x8] 15:32:55.165051 argo.neukum.org.32923 > 192.168.232.9.32933: P 2897:4345(1448) ack 1 win 5792 (DF) 15:32:55.166482 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack 4345 win 7240 (DF) [tos 0x8] 15:32:55.188845 192.168.232.9.32783 > argo.neukum.org.ftp: . 78:78(0) ack 162 win 2920 (DF) [tos 0x10] 15:32:55.370024 argo.neukum.org.32923 > 192.168.232.9.32933: . 4345:5793(1448) ack 1 win 5792 (DF) 15:32:55.371488 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack 8689 win 8688 (DF) [tos 0x8] 15:32:55.371537 argo.neukum.org.32923 > 192.168.232.9.32933: . 8689:10137(1448) ack 1 win 5792 (DF) 15:32:55.371548 argo.neukum.org.32923 > 192.168.232.9.32933: . 10137:11585(1448) ack 1 win 5792 (DF) 15:32:55.372963 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack 10137 win 10136 (DF) [tos 0x8] 15:32:55.373008 argo.neukum.org.32923 > 192.168.232.9.32933: P 11585:13033(1448) ack 1 win 5792 (DF) 15:32:55.373017 argo.neukum.org.32923 > 192.168.232.9.32933: P 13033:14481(1448) ack 1 win 5792 (DF) 15:32:55.376836 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack 11585 win 11584 (DF) [tos 0x8] 15:32:55.376865 argo.neukum.org.32923 > 192.168.232.9.32933: . 14481:15929(1448) ack 1 win 5792 (DF) 15:32:55.378291 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack 11585 win 11584 (DF) [tos 0x8] 15:32:55.378328 argo.neukum.org.32923 > 192.168.232.9.32933: . 15929:17377(1448) ack 1 win 5792 (DF) 15:32:55.379753 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack 11585 win 11584 (DF) [tos 0x8] 15:32:55.379789 argo.neukum.org.32923 > 192.168.232.9.32933: P 11585:13033(1448) ack 1 win 5792 (DF) 15:32:55.381217 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack 13033 win 13032 (DF) [tos 0x8] 15:32:55.590020 argo.neukum.org.32923 > 192.168.232.9.32933: P 13033:14481(1448) ack 1 win 5792 (DF) 15:32:55.591518 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack 17377 win 14480 (DF) [tos 0x8]