rec.autos.simulators

by **David Ciemn** » Sun, 09 Jul 2000 04:00:00

Hello all...Last Monday my *** PC arrived equipped with plenty of
horsepower. Athlon 800, V5, plenty of everything. All week GPL has been fine
online and offline. 36fps full grids a thing of beauty. Last night though
offline was fine but online I experienced severe chugging. I have a cable
connections and there were no problems witht the network or connection.

Eric C at VROC suggested switching from no fsaa in glide to 2x fsaa in d3d.
Tried that and offline it was magnificent. Went back online and there was
the chugging again. Any one have any ideas or tips? Why all of a sudden
after a few days?

Dave C.

by **Tracey A Mille** » Sun, 09 Jul 2000 04:00:00

That sounds like it might be an interrupt problem, perhaps Win 98
decided to switch some irq's around. I would verify that the V5 isn't
sharing an irq with anything else, make sure the V5 is on a higher
priority irq (9,10,11) and that the NIC card is on a lower priority
irq (3,4,5,7).

Beyond that, I would try to think of anything else that might have
changed, hardware added, or software installed, then I'd call the
folks you bought the rig from and find out how competent their tech
support is before your return period expires.

> Hello all...Last Monday my *** PC arrived equipped with plenty of
> horsepower. Athlon 800, V5, plenty of everything. All week GPL has
been fine
> online and offline. 36fps full grids a thing of beauty. Last night
though
> offline was fine but online I experienced severe chugging. I have a
cable
> connections and there were no problems witht the network or

connection.

by **Simon Brow** » Sun, 09 Jul 2000 04:00:00

I have a question along similar lines. I recently noticed that my V3 and my
SBLive are sharing an IRQ and also GPL isn't running anything like full
speed anymore. Is that the reason?
Thanks.

by **Greg Cisk** » Sun, 09 Jul 2000 04:00:00

You might want to try disabling your network and see if that helps.
If windows expects your network to be there and it isn't, it may
spend too much time in the background polling for a good
network connection.

The irq issues the others suggested sound interesting, however
I would be surprised if that was it. If you have irq problems the
symptom is usually a solid lockup... If it was working fine before
but now has problems and you did nothing to the hardware or
drivers, I would blame you network especially since you have
cable.

Also since you are using cable, do you have a firewall like
BlackICE or Zonealarm??? That is essential for any hone
ISP connection (DSL, Cable or regular dialup). Someone
could have hacked into you causing the problems.

--

by **Kieran Larki** » Sun, 09 Jul 2000 04:00:00

Could be lots of people were on-line. This can slow the connection down to
less than a 56K I think?

--
Kieran
www.pcracing.co.uk for GP3 and WSC

by **Brett C. Camma** » Sun, 09 Jul 2000 04:00:00

Actually, the issue is with Windows 98 where the technique of PCI
Steering/IRQ Sharing was introduced. It actually does allow the
sharing of interrupts, but I believe that it does have a serious
degrading effect in CPU-intensive games like GPL.

I personally have had a *** of a time with good machine performance
with GPL since day one on a machine which, by comparison to similarly
equipped machines described here, should be perfectly adequate.
(Celeron 400, 64 Megs ram, Voodoo2, DSL modem on USB)

I am awaiting a new harddrive so I can actually find out for certain
with GPL, but I went on a unwanted "voyage of discovery" into the
whole IRQ sharing/PCI Steering issue and have subsequently managed to
completely eliminate that functional component from my Win98
configuration. The machine *seems* snappier, but until I get the
Voodoo2 card back in, I cannot tell if it will eliminate my GPL
performace problems.

So, IRQ sharing is possible and the IRQ arbitration process built into
Win98 can add some extra, undesireable overhead to interrupt
processing.

Regards,
Brett C. Cammack
That's Racing! Motorsports
Pompano Beach, FL

by **John Burto** » Tue, 11 Jul 2000 04:00:00

>>The irq issues the others suggested sound interesting, however
>>I would be surprised if that was it. If you have irq problems the
>>symptom is usually a solid lockup... If it was working fine before
>>but now has problems and you did nothing to the hardware or
>>drivers, I would blame you network especially since you have
>>cable.

>Actually, the issue is with Windows 98 where the technique of PCI
>Steering/IRQ Sharing was introduced. It actually does allow the
>sharing of interrupts, but I believe that it does have a serious
>degrading effect in CPU-intensive games like GPL.

>I personally have had a *** of a time with good machine performance
>with GPL since day one on a machine which, by comparison to similarly
>equipped machines described here, should be perfectly adequate.
>(Celeron 400, 64 Megs ram, Voodoo2, DSL modem on USB)

>I am awaiting a new harddrive so I can actually find out for certain
>with GPL, but I went on a unwanted "voyage of discovery" into the
>whole IRQ sharing/PCI Steering issue and have subsequently managed to
>completely eliminate that functional component from my Win98
>configuration. The machine *seems* snappier, but until I get the
>Voodoo2 card back in, I cannot tell if it will eliminate my GPL
>performace problems.

>So, IRQ sharing is possible and the IRQ arbitration process built into
>Win98 can add some extra, undesireable overhead to interrupt
>processing.

>Regards,
>Brett C. Cammack
>That's Racing! Motorsports
>Pompano Beach, FL

So, the next obvious question is how do you change the IRQ of the cards
to stop them sharing?
--
John Burton

by **Dave Henri** » Wed, 12 Jul 2000 04:00:00

there are a couple of ways. You move the card to a different
slot...obviously not the agp card but whatever the conflicting pci card is.
two: You use device manager in the system control panel to force windows
to change the irq. Not all components can be adjusted however.
3 And this is kinda tied to 1...you use the bios options to take away
windows freedom of choice...however,, I can't give details on this paticular
method..anyone else?
dave henrie

> >>The irq issues the others suggested sound interesting, however
> >>I would be surprised if that was it. If you have irq problems the
> >>symptom is usually a solid lockup... If it was working fine before
> >>but now has problems and you did nothing to the hardware or
> >>drivers, I would blame you network especially since you have
> >>cable.

> >Actually, the issue is with Windows 98 where the technique of PCI
> >Steering/IRQ Sharing was introduced. It actually does allow the
> >sharing of interrupts, but I believe that it does have a serious
> >degrading effect in CPU-intensive games like GPL.

> >I personally have had a *** of a time with good machine performance
> >with GPL since day one on a machine which, by comparison to similarly
> >equipped machines described here, should be perfectly adequate.
> >(Celeron 400, 64 Megs ram, Voodoo2, DSL modem on USB)

> >I am awaiting a new harddrive so I can actually find out for certain
> >with GPL, but I went on a unwanted "voyage of discovery" into the
> >whole IRQ sharing/PCI Steering issue and have subsequently managed to
> >completely eliminate that functional component from my Win98
> >configuration. The machine *seems* snappier, but until I get the
> >Voodoo2 card back in, I cannot tell if it will eliminate my GPL
> >performace problems.

> >So, IRQ sharing is possible and the IRQ arbitration process built into
> >Win98 can add some extra, undesireable overhead to interrupt
> >processing.

> >Regards,
> >Brett C. Cammack
> >That's Racing! Motorsports
> >Pompano Beach, FL

> So, the next obvious question is how do you change the IRQ of the cards
> to stop them sharing?
> --
> John Burton

rec.autos.simulators

V5 chugging???

V5 chugging???

V5 chugging???

V5 chugging???

V5 chugging???

V5 chugging???

V5 chugging???

V5 chugging???

V5 chugging???