Strange Performance problem

[Whats the point]

Hi

I have a problem with my Geforce 4 4400 TI and im not sure that its the right place to ask this but im out of idears.

Everything seems to work fine but when i run any opengl application or glxgears the frame freezes for about 1/3 of a second and then it resumes and runs smooth for 3 seconds. This continues for ever and since i get no error messages i dont know how to fix it.

xorg.conf:

Section "Files"
	RgbPath      "/usr/lib/X11/rgb"
	ModulePath   "/usr/X11R6/lib/modules"
	FontPath     "/usr/share/fonts/misc/"
	FontPath     "/usr/share/fonts/Speedo/"
	FontPath     "/usr/share/fonts/Type1/"
	FontPath     "/usr/share/fonts/CID/"
	FontPath     "/usr/share/fonts/75dpi/"
	FontPath     "/usr/share/fonts/100dpi/"
EndSection

Section "Module"
	Load  "record"
	Load  "extmod"
	Load  "dbe"
	Load  "glx"
	Load  "xtrap"
	Load  "type1"
	Load  "freetype"
	Load  "speedo"
EndSection


Section "Monitor"
	Identifier   "Samsung930BF"
	VendorName   "Samsung"
	ModelName    "930BF"
	HorizSync    30.0 - 81.0
	VertRefresh  56.0 - 75.0
EndSection

Section "Device"
	Identifier  "Geforce4"
	Driver      "nvidia"
	VendorName  "nVidia Corporation"
	BoardName   "NV25 [GeForce4 Ti 4200]"
	Option "ConnectedMonitor" "DFP"
	Option	    "HWCursor" "true"
	Option	    "CursorShadow" "false"
	Option	    "NoLogo" "true"
	Option	    "RenderAccel" "true"
	BusID       "PCI:1:0:0"
EndSection

Section "Screen"
	Identifier "Samsung19"
	Device     "Geforce4"
	Monitor    "Samsung930BF"
	DefaultDepth     24
	SubSection "Display"
		Depth     24
		Modes    "1280x1024"
	EndSubSection
EndSection

spanden  # glxgears 
10871 frames in 5.0 seconds = 2174.200 FPS
14301 frames in 5.0 seconds = 2860.200 FPS
32545 frames in 5.0 seconds = 6509.000 FPS

spanden  # cat /proc/driver/nvidia/agp/status 
Status:          Enabled
Driver:          AGPGART
AGP Rate:        4x
Fast Writes:     Enabled
SBA:             Enabled

spanden  # cat /proc/driver/nvidia/agp/host-bridge 
Host Bridge:     PCI device 8086:1a30
Fast Writes:     Supported
SBA:             Supported
AGP Rates:       4x 2x 1x 
Registers:       0x1f000217:0x00000314

spanden  # cat /proc/driver/nvidia/cards/0 
Model:           GeForce4 Ti 4200
IRQ:             17
Video BIOS:      04.25.00.30.00
Card Type:       AGP

I have attached my Xorg.log file but the only error i can se with 'grep "EE" /var/log/Xorg.log ' is

(EE) Failed to load module "speedo" (module does not exist, 0)

And i dont see how that could be a problem.

I hope someone has the answer to this problem.

[Hammett]

I had a similar problem. In my case it turned to be that conky (fork from torsmo) was interfering too much in the performance of the video card with the netgraph. Check out what programs update every 3 seconds.

[Whats the point]

I tried stopping all unneeded processes and it worked no more strange lags.
I dont know excatly what process was caursing the problem but its gone now.
Thinks Hammett