From: Oliver Neukum <oliver@neukum.org>
To: linux-kernel@vger.kernel.org
Subject: asymmetric speeds in ftp transfers between linux boxes
Date: Mon, 19 Nov 2001 18:06:59 +0100 [thread overview]
Message-ID: <01111918065906.01742@argo> (raw)
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 <nop,nop,timestamp 225524
158219> (DF)
15:32:55.151530 192.168.232.9.32932 > argo.neukum.org.32922: . 1:1(0) ack
3639 win 47784 <nop,nop,timestamp 158240 225524> (DF) [tos 0x8]
15:32:55.151662 192.168.232.9.32932 > argo.neukum.org.32922: F 1:1(0) ack
3639 win 47784 <nop,nop,timestamp 158240 225524> (DF) [tos 0x8]
15:32:55.151746 argo.neukum.org.32922 > 192.168.232.9.32932: . 3639:3639(0)
ack 2 win 5792 <nop,nop,timestamp 225524 158240> (DF) [tos 0x8]
15:32:55.151794 192.168.232.9.32783 > argo.neukum.org.ftp: P
1908125332:1908125356(24) ack 1773235573 win 2920 <nop,nop,timestamp 158240
225503> (DF) [tos 0x10]
15:32:55.152160 argo.neukum.org.ftp > 192.168.232.9.32783: P 1:21(20) ack 24
win 5792 <nop,nop,timestamp 225524 158240> (DF) [tos 0x10]
15:32:55.152371 192.168.232.9.32783 > argo.neukum.org.ftp: . 24:24(0) ack 21
win 2920 <nop,nop,timestamp 158240 225524> (DF) [tos 0x10]
15:32:55.152803 192.168.232.9.32783 > argo.neukum.org.ftp: P 24:48(24) ack 21
win 2920 <nop,nop,timestamp 158240 225524> (DF) [tos 0x10]
15:32:55.152946 argo.neukum.org.ftp > 192.168.232.9.32783: P 21:33(12) ack 48
win 5792 <nop,nop,timestamp 225524 158240> (DF) [tos 0x10]
15:32:55.153205 192.168.232.9.32783 > argo.neukum.org.ftp: P 48:54(6) ack 33
win 2920 <nop,nop,timestamp 158240 225524> (DF) [tos 0x10]
15:32:55.153427 argo.neukum.org.ftp > 192.168.232.9.32783: P 33:81(48) ack 54
win 5792 <nop,nop,timestamp 225524 158240> (DF) [tos 0x10]
15:32:55.153763 192.168.232.9.32933 > argo.neukum.org.32923: S
3094161908:3094161908(0) win 5840 <mss 1460,sackOK,timestamp 158240
0,nop,wscale 1> (DF)
15:32:55.153841 argo.neukum.org.32923 > 192.168.232.9.32933: S
2943388716:2943388716(0) ack 3094161909 win 5792 <mss 1460,sackOK,timestamp
225524 158240,nop,wscale 0> (DF)
15:32:55.154043 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack 1
win 2920 <nop,nop,timestamp 158240 225524> (DF)
15:32:55.154133 192.168.232.9.32783 > argo.neukum.org.ftp: P 54:78(24) ack 81
win 2920 <nop,nop,timestamp 158240 225524> (DF) [tos 0x10]
15:32:55.154366 argo.neukum.org.ftp > 192.168.232.9.32783: P 81:162(81) ack
78 win 5792 <nop,nop,timestamp 225524 158240> (DF) [tos 0x10]
15:32:55.156841 argo.neukum.org.32923 > 192.168.232.9.32933: . 1:1449(1448)
ack 1 win 5792 <nop,nop,timestamp 225524 158240> (DF)
15:32:55.156891 argo.neukum.org.32923 > 192.168.232.9.32933: .
1449:2897(1448) ack 1 win 5792 <nop,nop,timestamp 225524 158240> (DF)
15:32:55.158290 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack
1449 win 4344 <nop,nop,timestamp 158240 225524> (DF) [tos 0x8]
15:32:55.158358 argo.neukum.org.32923 > 192.168.232.9.32933: P
2897:4345(1448) ack 1 win 5792 <nop,nop,timestamp 225524 158240> (DF)
15:32:55.158367 argo.neukum.org.32923 > 192.168.232.9.32933: .
4345:5793(1448) ack 1 win 5792 <nop,nop,timestamp 225524 158240> (DF)
15:32:55.162076 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack
2897 win 5792 <nop,nop,timestamp 158241 225524> (DF) [tos 0x8]
15:32:55.162108 argo.neukum.org.32923 > 192.168.232.9.32933: .
5793:7241(1448) ack 1 win 5792 <nop,nop,timestamp 225525 158241> (DF)
15:32:55.163537 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack
2897 win 5792 <nop,nop,timestamp 158241 225524,nop,nop, sack 1 {5793:7241} >
(DF) [tos 0x8]
15:32:55.163582 argo.neukum.org.32923 > 192.168.232.9.32933: P
7241:8689(1448) ack 1 win 5792 <nop,nop,timestamp 225525 158241> (DF)
15:32:55.165008 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack
2897 win 5792 <nop,nop,timestamp 158241 225524,nop,nop, sack 1 {5793:8689} >
(DF) [tos 0x8]
15:32:55.165051 argo.neukum.org.32923 > 192.168.232.9.32933: P
2897:4345(1448) ack 1 win 5792 <nop,nop,timestamp 225525 158241> (DF)
15:32:55.166482 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack
4345 win 7240 <nop,nop,timestamp 158241 225525,nop,nop, sack 1 {5793:8689} >
(DF) [tos 0x8]
15:32:55.188845 192.168.232.9.32783 > argo.neukum.org.ftp: . 78:78(0) ack 162
win 2920 <nop,nop,timestamp 158244 225524> (DF) [tos 0x10]
15:32:55.370024 argo.neukum.org.32923 > 192.168.232.9.32933: .
4345:5793(1448) ack 1 win 5792 <nop,nop,timestamp 225546 158241> (DF)
15:32:55.371488 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack
8689 win 8688 <nop,nop,timestamp 158262 225546> (DF) [tos 0x8]
15:32:55.371537 argo.neukum.org.32923 > 192.168.232.9.32933: .
8689:10137(1448) ack 1 win 5792 <nop,nop,timestamp 225546 158262> (DF)
15:32:55.371548 argo.neukum.org.32923 > 192.168.232.9.32933: .
10137:11585(1448) ack 1 win 5792 <nop,nop,timestamp 225546 158262> (DF)
15:32:55.372963 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack
10137 win 10136 <nop,nop,timestamp 158262 225546> (DF) [tos 0x8]
15:32:55.373008 argo.neukum.org.32923 > 192.168.232.9.32933: P
11585:13033(1448) ack 1 win 5792 <nop,nop,timestamp 225546 158262> (DF)
15:32:55.373017 argo.neukum.org.32923 > 192.168.232.9.32933: P
13033:14481(1448) ack 1 win 5792 <nop,nop,timestamp 225546 158262> (DF)
15:32:55.376836 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack
11585 win 11584 <nop,nop,timestamp 158262 225546> (DF) [tos 0x8]
15:32:55.376865 argo.neukum.org.32923 > 192.168.232.9.32933: .
14481:15929(1448) ack 1 win 5792 <nop,nop,timestamp 225546 158262> (DF)
15:32:55.378291 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack
11585 win 11584 <nop,nop,timestamp 158262 225546,nop,nop, sack 1
{14481:15929} > (DF) [tos 0x8]
15:32:55.378328 argo.neukum.org.32923 > 192.168.232.9.32933: .
15929:17377(1448) ack 1 win 5792 <nop,nop,timestamp 225546 158262> (DF)
15:32:55.379753 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack
11585 win 11584 <nop,nop,timestamp 158263 225546,nop,nop, sack 1
{14481:17377} > (DF) [tos 0x8]
15:32:55.379789 argo.neukum.org.32923 > 192.168.232.9.32933: P
11585:13033(1448) ack 1 win 5792 <nop,nop,timestamp 225546 158263> (DF)
15:32:55.381217 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack
13033 win 13032 <nop,nop,timestamp 158263 225546,nop,nop, sack 1
{14481:17377} > (DF) [tos 0x8]
15:32:55.590020 argo.neukum.org.32923 > 192.168.232.9.32933: P
13033:14481(1448) ack 1 win 5792 <nop,nop,timestamp 225568 158263> (DF)
15:32:55.591518 192.168.232.9.32933 > argo.neukum.org.32923: . 1:1(0) ack
17377 win 14480 <nop,nop,timestamp 158284 225568> (DF) [tos 0x8]
reply other threads:[~2001-11-19 17:09 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=01111918065906.01742@argo \
--to=oliver@neukum.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.