OESF Portables Forum

General Forums => General Discussion => Topic started by: raybert on March 24, 2004, 09:55:37 pm

Title: stalled file uploads
Post by: raybert on March 24, 2004, 09:55:37 pm

Hi,

I\'ve been having a problem with my Z when uploading files to it (i.e. transferring from PC to Z) over a USB network connection.  It\'ll get part way through the transfer and then stall out.  The point at which it stalls out is different everytime.  It occurs no matter which transfer method I\'m using (ftp, sftp, scp) and it has occurred while transferring from both Windoze XP and from Linux.  When it stalls out, the Z no longer responds to any network traffic at all, until I disconnect it from the PC and then reconnect it.  It seems to happen mainly with very large files.  It doesn\'t happen over a WLAN connection and it doesn\'t happen when downloading files (i.e. from Z to PC).

Based on all of this, it sounds to me like the problem is somewhere in the Z\'s usb networking sub-system.  I have no idea where to start looking for the problem though.

Has anyone else encountered this problem?  Anyone have any idea how to fix it?

Thanks for listening...

~ray

Title: stalled file uploads
Post by: raybert on March 25, 2004, 10:16:29 am

I just realized that I forgot to mention my configuration:

c860 running tkcROM 2.5.1 and sash kernel.

Also, the tests I\'ve done so far have all been uploading to the SD card.  I need to conduct some tests today to cf and ram (I\'ll report my results).

~ray

Title: stalled file uploads
Post by: shinRaiden on June 15, 2004, 02:37:21 pm

Hmm, I\'m having this too, with an additional aggravating factor...

When the transfer crashes, it evidently leaves bad bits on the SD card. I have the card formatted as FAT so I can swap it back and forth between my XP machine and my Z. XP chokes on the bad bits, sometimes to the point of me having to force a hard reset, and the Z freezes up for several minutes until it times out trying to access the SD card, or initializing on insertion. Comments anybody?

Z 860
Original Sharp Image
512mb Sandisk SD card

Title: stalled file uploads
Post by: jagrka on June 23, 2005, 11:36:22 pm

I am experiencing similiar problems. I was wondering if anyone of the previous posters was able to resolve this problem?

Title: stalled file uploads
Post by: hQuin on June 30, 2005, 07:34:39 am

I've experienced this too.  I've had to limit transfers over scp to a few files at a time.  I'm not entirely certain whether it is file size or connection time related.  Happened most recently when transferring lots of smaller (<2MB) files in one wildcarded scp call.  Lost ssh access etc.  Had top running to make sure the session was active.  Connection died anyway.  

Running OZ 3.5.3 (Hentges) on a 5500
XP machine as host

I waited a couple of minutes, then hit the hard reset.

Harry.

Title: stalled file uploads
Post by: speculatrix on June 30, 2005, 08:25:34 am

I was having this... uploading files directly to my 1GB lexar card. Every time, when a certain file size was hit, scp would stall and usbnet would lockup. I'd have to unplug the USB connection, wait a while, the replug. Seemed to happen somewhat at random when over 7.5MB have been copied..

In a flash of inspiration, I realised my card was formatted FAT, not FAT32 (because I used it in my Palm T3 originally). Copied all the files off, reformatted FAT32, and restored everything.

Guess what?!!

...

Didn't make any difference.. it still locks up.

I worried that it was related to my similar problems with bluetooth, whereby a heavy network load locks up bnep0 networking.

This is running SuSE9.2 + kernel 2.6.12.1 on the desktop, Cacko 1.22-full on the Z.

NOTE: I don't get this problem when copying to normal memory on Z i.e. to /home/zaurus.

Paul

Title: stalled file uploads
Post by: bbb on July 01, 2005, 09:20:27 am

This must be a really common problem. I find that I can transfer smallish files no problem (internal and CF memory). When I attempt to transfer a large .wav file from the pda it appears that the transfer times out.

I imagine there is a config file somewhere with a timing option.


Come on you computer heads, there is enough quedos in this one!!

bbb

Title: stalled file uploads
Post by: snufkin on November 11, 2005, 05:12:29 am

i have exactly the same problem w/ bluetooth connection.  i don't know the complete solution at the moment but i found that underclocking made the connection more stable.

Title: stalled file uploads
Post by: speculatrix on November 11, 2005, 05:34:20 am

Quote

i have exactly the same problem w/ bluetooth connection.  i don't know the complete solution at the moment but i found that underclocking made the connection more stable.
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I had another thread running about bluetooth stability... not so much transferring files, but any heavy data transfer, e.g. using vnc client (keypebble). I haven't observed the same issue with wireless lan though.

I am wondering whether it's an interrupt problem with any peripherals not on the motherboard.

I'll have to try copying big files to/from CF as well as SD card.