Sorry, took me a while to answer.
Thanks for offering help.
I played a little bit around and it seems to be a hardware - software problem.
I tested following softwareconfigs without success:
redhat 6.2, kernel 2.2.18, rtlinux 3.0 (kde 1.1.2)
redhat 6.0, kernel 2.2.18, rtlinux 3.0 (without gui)
redhat 6.0, kernel 2.4, rtlinux 3.0 (without gui)
Then I changed from my asus cuv4x-d with ONE P3-1000 - is a dual machine with via
chiset and 133mhz fsb processor, singleprocessor kernel.
to a asus p2b with bx chipset and P2-333 (redhat6.2, kernel 2.2.18 and rtlinux 3.0 and
kde 1.1.2) and no crashing problems anymore!
I have a rtlinux interrupthandler (that calls a thread) running. Reading from a a/d
card, writing this to a fifo and writing it back to a d/a card.
For starting and stopping I use a fifo too (handler).
My a/d card "interrupts" all 50us.
On the P3-1G this works fine IF no programm reads the fifos from the linux side.
('cat' the fifo is also a killer) If the fifo is red than the system
crashs.
Everything is fine on the slow machine. The d/a output values are correct, I get the
right through the fifos, nice and stable - everything fine.
Because all works fine on the slow machine I think it must be a 'more complex'
software-hardwareproblem somewhere. Although I'm not a professoinal
programmer...
If someone has a hint... thanks!
alexander
------------------
> What version of RTL, what processor, what version of Linux?
>
> On Mon, Jul 23, 2001 at 02:46:40PM -0400, alex @UofT wrote:
> > hi.
> > I ran here into serious problems. My system crashs every time I read
>from the
> > FIFOS while doing - lets say - cat a textfile.
> > Without "touching" the system while reading from the fifos it usually
crahs
> > after a while (coupple of minutes).
> > the rtlinux task itself is stable.
> > If someone has a hint, I would very very appreciate this.
> > In my opinion the linux rtfofo readprogramm seems to be pretty o.k. -
quite
> > nothing is done.
> >
> > alexander
> >
>
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