On Tue, 2002-12-17 at 19:39, Ronald Baljeu wrote: > Hello, > > My Speedtouch 330 has serious performance problems under Linux. > When downloading it (sometimes) begins at 50k/sec and then it > immediately falls back at about 15k/sec where it stays that way during > the rest of the transfer, while under windblows I get a constant > throughput of 50k/sec, as it should. I noticed hundreds of > CRC-errors in AAL5-frames under Linux vs 0 under windows.
I doubt its the driver itself per-se. Do you have any processor load figures? Does the driver take a lot of time? I suspect a potential buggy USB chipset that windows copes with better. What chipset have you got? > > I tried everything I can think of: > - changing the speedtouch drivers (1.1, CVS-19112002, current CVS) > - changing the firmware (mgmt.o from Alcatel, alcaudsl.sys from CD) > - running pppoa3 instead of pppoa2 > - upgrading the kernel from 2.4.18 -> 2.4.20 > - using async communication (-a, no HDLC) vs. sync (HDLC) > - and yes, I even tried commenting out the CRC-check in atm.c, > however, it appears the frames were really corrupt ;-( > > I'm beginning to get a bit desperate now. I would like to know > how my frames get corrupted, but I don't know what to do next. > > Any suggestions are very appreciated! > > Cheers, > Ronald > > > > Liste de diffusion modem ALCATEL SpeedTouch USB > Pour se d�sinscrire : mailto:[EMAIL PROTECTED]?subject=unsubscribe > > -- Alex http://www.bennee.com/~alex/ Liste de diffusion modem ALCATEL SpeedTouch USB Pour se d�sinscrire : mailto:[EMAIL PROTECTED]?subject=unsubscribe
