lkml.org 
[lkml]   [1996]   [Jun]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subjectppp problems with 2.0.0
Date
With 2.0.0, I am suddenly seeing very poor outgoing ftp
performance on my Alpha. By very poor I mean < 400 B/s.

Looking at the modem lights, I can see regular long pauses
between packet sends.

I also recorded a bit of an ftp session with tcpdump:

11:18:45.433760 ppp14-11.rns.1073 > atheist.ftp-data: . 2048:3072(1024) ack 1 win 31744
11:18:45.433760 ppp14-11.rns.1073 > atheist.ftp-data: . 3072:4096(1024) ack 1 win 31744
11:18:46.439040 atheist.ftp-data > ppp14-11.rns.1073: . ack 3072 win 4096
11:18:46.439040 ppp14-11.rns.1073 > atheist.ftp-data: P 4096:5120(1024) ack 1 win 31744
11:18:48.010400 ppp14-11.rns.1073 > atheist.ftp-data: . 3072:4096(1024) ack 1 win 31744
11:18:48.635040 atheist.ftp-data > ppp14-11.rns.1073: . ack 4096 win 4096
11:18:48.635040 ppp14-11.rns.1073 > atheist.ftp-data: P 4096:5120(1024) ack 1 win 31744
11:18:49.240160 atheist.ftp-data > ppp14-11.rns.1073: . ack 5120 win 4096
11:18:49.240160 ppp14-11.rns.1073 > atheist.ftp-data: . 5120:6144(1024) ack 1 win 31744
11:18:49.240160 ppp14-11.rns.1073 > atheist.ftp-data: . 6144:7168(1024) ack 1 win 31744
11:18:50.235680 atheist.ftp-data > ppp14-11.rns.1073: . ack 6144 win 4096
11:18:50.235680 ppp14-11.rns.1073 > atheist.ftp-data: . 7168:8192(1024) ack 1 win 31744
11:18:51.836320 ppp14-11.rns.1073 > atheist.ftp-data: . 6144:7168(1024) ack 1 win 31744
11:18:52.646400 atheist.ftp-data > ppp14-11.rns.1073: . ack 7168 win 4096
11:18:52.646400 ppp14-11.rns.1073 > atheist.ftp-data: . 7168:8192(1024) ack 1 win 31744
11:18:53.232000 atheist.ftp-data > ppp14-11.rns.1073: . ack 8192 win 4096
11:18:53.232000 ppp14-11.rns.1073 > atheist.ftp-data: . 8192:9216(1024) ack 1 win 31744

Something interesting to note is that it is retransmitting
every second or third packet, even though an ack was received.

If I can provide any other information that might help solve
this problem, please ask -- this is very frustrating.


r~


\
 
 \ /
  Last update: 2005-03-22 13:37    [W:0.025 / U:1.836 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site