What version of RTLinux are you using?
On Fri, Nov 24, 2000 at 09:04:48PM +0100, Erwin Rol wrote:
> Ok Here we go again,
>
> I am running a G400MAX now and have simmulair problems, but not as bad.
> Normal latency is around 10usecs, but when a lot of output is writen to
> a
> X-terminal it jumps to 500usec. When enabling PCIretries (so writing to
> the FIFO
> without checking if it is full) it always shows a latency of 500usec
> when for example
> running 'x11perf -all', so it looks like in the MGA driver there is a
> spot where there
> is forgotten to check if the FIFO is full (i am looking into the source
> at the moment).
>
> The thing that worries me a bit is the fact that now 3 XFree 4.0.1
> drivers cause problems
> for RT-Linux , the nVidia, the mga and the s3virge one.
>
> I would really like to see someone else try Xfree 4.0.1 with RT-linux (i
> know it is a pain when you have
> a distribution with XFree 3.3.x :-/ )
>
> OK will keep you posted on what else i find out,
>
> Erwin
>
>
> Michel D�nzer wrote:
> >
> > Erwin Rol wrote:
> >
> > > > - Try "pci_burst" and "pci_retry" in the Device section. (Both on.)
> > > done that.
> >
> > What if you disable PCI retry? I'd have imagined that the PCI bus might stall
> > when the CPU tries to access a register while the accelerator is doing a
> > time-consuming task.
> >
> > Please forgive me if this is completely off...
> >
> > Michel
> >
> > --
> > Earthling Michel D�nzer (MrCooper) \ CS student and free software enthusiast
> > Debian GNU/Linux (powerpc,i386) user \ member of XFree86 and The DRI Project
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