OK here is what i have tried in the last few days.
The following part where the same in all the tests.
XFree 4.0.1
Athlon TB 800, 128MB PC133, ASUS K7V MB,
1)
with a s3virge based card
RTAI 1.5 on a 2.2.16 kernel
running the latency example which resulted in in peaks of 50msec latency
when i for exmple
pressed enter in a console window (causeing it to scroll one line or
more) also heavy X by dragging
windows as fast as posible caused also latency.
No change in the pci setup like sugested helped, appart from not using
acceleration.
2)
with a Matrox G400MAX
RTAI 1.5 on a 2.2.16 kernel
same latency example wich was way beter , no more problem with dragging
and enter presses. But when i do a ls -Rl
in a console window latency jumps up to 100-500usec with peaks at
1.5msec. When i minimize that window the latency goes
back to 3-15usec with peaks of 30usec.
3)
with a Matrox G400MAX
RTL 3.0 pre9 on a 2.2.17 kernel
the ./examples/measurements test results in the same max latencies as
with RTAI.
all 3 tests i also ran in failsafe mode with only xterminals (no gnome,
WM etc.)
sO the big teast left is trying all that with FXRee 3.3.6 , which i will
have to install again first :-/ but i don't see
a othe choice to rule out the hardware. An other thing would be when
someone else could reproduce it , the person
on comp.realtime sounded like he had the same problem.
If there are any test i should run , or something else there is that you
want to know , just give a shout.
- eRwin (and i blamed Paolo for calling me Edwin , sory Paolo :-)
[EMAIL PROTECTED] wrote:
>
> On Fri, Nov 24, 2000 at 09:04:48PM +0100, Erwin Rol wrote:
> > 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.
>
> Edwin:
> I had the impression that you were running RTAI. While this may be
> a harware/low-levelX problem, I'd like to get a precise bug report
> before we start speculating about X4 and the PCI bus.
> Version of RTLinux
> Version of Linux
> Hardware
> Test code.
>
>
>
>
> >
> > 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
> > -- [rtl] ---
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> --
> ---------------------------------------------------------
> Victor Yodaiken
> Finite State Machine Labs: The RTLinux Company.
> www.fsmlabs.com www.rtlinux.com
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