ttcp promblem in my 68360 board

[Park, Chan Taek]

Eric Norum wrote:

> "Park, Chan Taek" wrote:
> >
> > Hello, rtems-list users!
> >
> > I'm now benchmarking the ttcp for my 68360 board's ethernet performance.
> >
> > There is no problem when I set the buflen to 8K bytes(this is default in
> > the ttcp source code) or more than 512 bytes.
> > In this case the ttcp transmits 16M bytes successfully from my target
> > board to PC(winnt & cygwin) and vice versa.
> > And when the ttcp finished it prints out statistics information about
> > TCP throughput.
> > But when I set the buflen to small such as 100 bytes with -l option, the
> > ttcp never completed.
> > It was blocked forever by the write function after some number of calls
> > to the write function.
> >
> > My board configurations and host environments are that:
> >
> >     Target
> >         MC68EN360 33MHz Rev.C
> >         16MB DRAM
> >         SCC1 for ethernet(10Mbps)
> >         SMC1 for console(38.4kbps)
> >
> >     Host
> >         Windows NT 4.0
> >         Cygwin32 B20.1
> >         egcs-1.1b.tar.bz2
> >         binutils-2.9.1.tar.gz
> >         newlib-1.8.0.tar.gz
> >         egcs-1.1b-rtems-diff-19981028.gz
> >         binutils-2.9.1-rtems-diff-19981027.gz
> >         newlib-1.8.0-rtems-diff-19981027.gz
> >         rtems-4.0.0.tgz
> >
> > Please help me for that problem.
>
> 1) There have been lots of changes made since 4.0.0.  Perhaps that will
> fix your problem.
> 2) We're tracking down a problem that locks up interrupt handling once
> in a while.  How many TX buffers have you configured?

Thank you for your help.
The txBdCount is 16 and this is default in the source code.

>
> --
> Eric Norum                                 eric at cls.usask.ca
> Canadian Light Source                      Phone: (306) 966-6308
> University of Saskatchewan                 FAX:   (306) 966-6058
> Saskatoon, Canada.