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Old 07-04-04, 09:58 PM   #1
darrenf
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Default GL fast but X slow on dual x86-64

Hi,

I've had this problem for a while. OpenGL is relatively fast but my X windows performance is really bad whenever a GL app is running. At times I can be waiting for 30 seconds or so to respond. Its almost unusable. I've just updated to the 6106 driver but the problem remains. I'm running FC2, custom 2.6.7 kernel (SMP), Tyan K8W (2885), Dual Opteron 242, 2GB DDR333, Quadro FX500.

Any help appreciated. My only option may be disabling nVidia acceleration.

BTW 6106 made a big improvement to GL performance; glxgears went from ~3500 to ~5900 FPS!

cat /proc/driver/nvidia/version
NVRM version: NVIDIA Linux x86_64 NVIDIA Kernel Module 1.0-6106 Wed Jun 23 08:12:31 PDT 2004
GCC version: gcc version 3.3.3 20040412 (Red Hat Linux 3.3.3-7)

cat /proc/driver/nvidia/cards/0
Model: Quadro FX 500/600 PCI
IRQ: 16
Video BIOS: 04.34.20.22.10
Card Type: AGP

cat /proc/driver/nvidia/agp/host-bridge
Host Bridge: Advanced Micro Devices [AMD] AMD-8151 System Controller
Fast Writes: Supported
SBA: Supported
AGP Rates: 8x 4x
Registers: 0x1f000b7b:0x00000b22

cat /proc/driver/nvidia/agp/status
Status: Enabled
Driver: AGPGART
AGP Rate: 8x
Fast Writes: Disabled
SBA: Enabled
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Old 07-05-04, 03:34 AM   #2
zander
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Default Re: GL fast but X slow on dual x86-64

Does Shawn's suggestion (http://www.nvnews.net/vbulletin/show...t=23864&page=8) help?
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Old 07-05-04, 07:03 PM   #3
darrenf
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Default Re: GL fast but X slow on dual x86-64

Quote:
Originally Posted by zander
Yes, that seems to make a huge difference! Obviously I would like a better solution in the long term but this will do for now.

I wonder why this is such a problem for the 2885? I have previously run SMP on dual PIII without these dramas, and we are currently running dual Xeon boxes with FX1000 with no problems either.....
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Old 11-20-04, 10:48 PM   #4
darrenf
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Default Re: GL fast but X slow on dual x86-64

An update on the ongoing saga:

I update to fedora core 3 and things went from just usable to absolutely crap. Even using the cpubind trick didn't help. glxgears ran at about 3500 fps with the 6629 driver. I updated all the FC3 patches, including newer kernel and still no go. Installed FC3 from scratch, still no go. Played with BIOS settings, no go. Updated to S2885 202w beta BIOS, still no go.

I've always suspected it was a motherboard problem, but short of going through every BIOS option combination it was beyond me to nail down. Finally in frustration I removed the Quadro FX500 board and installed an older Quadro4 750XGL card.

Well what a surprise!! After reinstalling the 6629 driver (and fixing the /udev problem) it works like a charm. glxgears now runs at 8500 fps!! and more importantly it is as smooth as a billiard table!! No more lagging X problems! I can switch between gl and X apps with no problems, change stacking order, hide/show etc, everything it should have done 6 months ago.

I'm sorry to say it, I've been a fan of nVidia cards for a long time, but IMHO this FX500 is a huge piece of crap. It may be a specific compatability problem with the Tyan K8W S2885, but I would expect an QuadroFX to be as compatible as a Quadro4!

I will see about returning the QuadroFX to our supplier on Monday and chasing up another Quadro4, second hand if necessary.... hope this has been insightful to anyone else with the same problem.
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Old 12-05-04, 03:04 PM   #5
ifaxsoln
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Default Re: GL fast but X slow on dual x86-64

Quote:
Originally Posted by darrenf
An update on the ongoing saga:

I update to fedora core 3 and things went from just usable to absolutely crap. Even using the cpubind trick didn't help. glxgears ran at about 3500 fps with the 6629 driver. I updated all the FC3 patches, including newer kernel and still no go. Installed FC3 from scratch, still no go. Played with BIOS settings, no go. Updated to S2885 202w beta BIOS, still no go.
I'm seeing the same thing on a Quadro NVS 400 PCI, with the same motherboard, also with 2.02w BIOS (in desperation) and FC3. While the GL performance seems acceptable, the 2D performance is abysmal. I can watch screens paint!!

Quote:
Originally Posted by darrenf
I've always suspected it was a motherboard problem, but short of going through every BIOS option combination it was beyond me to nail down. Finally in frustration I removed the Quadro FX500 board and installed an older Quadro4 750XGL card.
Should I throw out the Quadro NVS?

-Darren
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Old 01-05-05, 05:19 PM   #6
darrenf
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Default Re: GL fast but X slow on dual x86-64

I have ordered a couple of Tyan K8W tiger systems, with Leadtek Quadro 4 750 XGL cards. The bad Quadro FX500 was a Leadtek, but the working Quadro 4 was a Elsa Gloria. When they arrive I will be able to work out if it is a chipset problem or a Leadtek problem.

If you can source an alternative card I would recommend testing to see if the problem persists.
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