Uploads via ppp stalling
I've suddenly started having great trouble uploading JPGs of 50K or so to
Trademe (our local New Zealand Ebay equivalent). They seem to be 'choking'
- that is, the first ~10K's go OK, then a slight gap, then a few more K's,
then a longer gap, then a very few K's, then a still longer gap, and so on -
it takes about 3 minutes to upload a 30K JPG! (Bigger ones just time out).
This is using Trademe's (javascript) upload page in a browser. Up until ~2
weeks ago it worked fine.
I have two separate systems:
1. IBM A20m thinkpad/Sarge/Gnome/KPPP Dick Smith PCMCIA 56K modem
2. AMD-based desktop/Sarge/Gnome/KPPP external Cyber Bullet 56K modem
Both running Sarge installed off the initial 'stable' release CD's (3.1r0
IIRC?)
Both systems behave in _exactly_ the same way, and it makes no difference
whether I use Opera or Firefox.
I also have two dialup ISP's, Clear and Orcon.
Uploads via FTP (using gftp) to my personal site at qc1.net in Dallas work
perfectly.
Uploading JPG's via Freeshare's upload page to Freeshare.us works perfectly
via my Clear ISP, but 'chokes' via my Orcon ISP.
Uploads to Trademe via either ISP 'choke'.
Uploading via my old Debian Woody installation works perfectly, so does
Windows98 (much as I hate to say so :)
The only thing I did to both my Sarge systems a couple of weeks ago was
fooling around with sound (ALSA drivers etc).
I've checked the logs in /var/log and I can't see anything that looks
significant there. However there may be more detailed logs I haven't
switched on.
One possibility that occurs to me - some daemon might be interfering (but I'm
a complete newbie to daemons). Another possibility - it's almost as if the
modem was waiting for some 'proceed' signal from the other end; but then, the
same modem has no problems with Woody or W98.
I've Googled extensively but I can't find anything relevant (which doesn't
mean it ain't there, I may have been using the wrong search terms)
So my question is -
Can anyone tell me where I should be looking in my system?
Can anyone point me at a document that explains how stuff gets from browser to
modem via KPPP and pppd and what files are involved?
For what it's worth, here's a log that includes the period of an upload to
Trademe (which 'choked' and took 3 1/2 minutes for 28K!) and the same file
uploaded to Freeshare.us (which took ~30 seconds - which I regard as OK)
/var/log/syslog
Aug 6 02:03:30 localhost pppd[3792]: pppd 2.4.3 started by cr, uid 1000
Aug 6 02:03:30 localhost pppd[3792]: Using interface ppp0
Aug 6 02:03:30 localhost pppd[3792]: Connect: ppp0 <--> /dev/ttyS1
Aug 6 02:03:30 localhost hal.hotplug[3798]: could not get mountpoint for
sysfs
Aug 6 02:03:31 localhost pppd[3792]: PAP authentication succeeded
Aug 6 02:03:31 localhost pppd[3792]: Cannot determine ethernet address for
proxy ARP
Aug 6 02:03:31 localhost pppd[3792]: local IP address 218.101.69.18
Aug 6 02:03:31 localhost pppd[3792]: remote IP address 218.101.58.3
Aug 6 02:03:31 localhost pppd[3792]: primary DNS address 203.97.33.14
Aug 6 02:03:31 localhost pppd[3792]: secondary DNS address 203.97.37.14
Aug 6 02:04:33 localhost kernel: PPP: VJ decompression error
Aug 6 02:12:39 localhost pppd[3792]: Terminating on signal 15
Aug 6 02:12:39 localhost pppd[3792]: Connect time 9.2 minutes.
Aug 6 02:12:39 localhost pppd[3792]: Sent 484158 bytes, received 715082
bytes.
Aug 6 02:12:40 localhost pppd[3792]: Connection terminated.
Aug 6 02:12:40 localhost pppd[3792]: Exit.
Aug 6 02:12:40 localhost hal.hotplug[4001]: could not get mountpoint for
sysfs
cr
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