Don’t worry about directshow. I’m just trying to pinpoint the issue here. At what resolutions and frame rates did you run the first test?

640x480 VGA resolution 30fps in color mode, for all the tests. All other settings were at default.

ankit - 21 March 2010 11:02 AM

640x480 VGA resolution 30fps in color mode, for all the tests. All other settings were at default.

What is the average CPU usage when you run the PS3EyeTest at that resolution?

the v3.0.something with PS3Eyetest eats up appx 30% of CPU but never freezes and with latest v4.0.something it eats up only 10-15% of the cpu cycles when running smoothly and at the time of freeze the cpu usage DROPS to 3-4%.

The CPU usage drops since the “CLEyeCameraGetFrame” times out (returns false after timeout period) or never returns (in case timeout is set to “0”).
Maybe the library is waiting inifitely for some kind of event to happen or some locking issues.

okay, but that info doesnt help.

I just wanted to post that I downgraded from the latest driver to v3.0.0.0901 and it’s been working flawlessly so far.
This is on a Dell XPS m1710 with Windows XP 32.

I’ve been working on the eye-writer project and their demo program used to freeze in under a minute on the 4.0 drivers. With the 3.0 drivers, it’s been running for quite a while now..I’m even doing other things on this computer and it continues to run in the background.

I’ve also been keeping an eye on my DPC latency and it’s been low. With the 4.0 drivers, I would occasionally get a 1200-1500 spike, then a 6000 spike that would cause the video to freeze (both in CL-Eye Test and the temptTracker for the eye-writer).

If you need any more info from my computer to help analyze this issue, please let me know.

by the way, I want to add that I’ve been using the 4.0 drivers on my desktop (core i7 with windows 7 64) and haven’t had any trouble with it at all. But on my laptop, I need the 3.0 drivers or it freezes up.

update: I just recorded a 5100 latency spike and the video did NOT freeze (on my laptop with the 3.0 drivers)..it’s continuing to run as expected

Thanks Zentelis, thats what i have been trying to explain to Alex too . thanks for confirming my tests. i was only interested in the latest version because i want to use multi cam SDK with color mode. which was supported in later on versions.
Hopefully Alex will be able to figure out the issue with the latest drivers.

Glad I could confirm them for you..heck, if it wasn’t for this thread, I wouldn’t have known to downgrade the drivers
Good luck with the multi-camera issue..I don’t need it for the project I’m working on, so the 3.0 drivers are going to be sufficient for me.
Also, check my update in my previous post..I recorded a huge latency spike and the video did not freeze on the 3.0 drivers

I am also having this problem with the 4.0.1.0217 driver on my laptop. Is there any chance I can get a hold of driver version v3.0.0.0901 while this is being fixed?

Alex, Any clue on what could be the issue with the latest drivers/SDK ?

Zentelis - 24 March 2010 08:18 AM

I just wanted to post that I downgraded from the latest driver to v3.0.0.0901 and it’s been working flawlessly so far.
This is on a Dell XPS m1710 with Windows XP 32.

I’ve been working on the eye-writer project and their demo program used to freeze in under a minute on the 4.0 drivers. With the 3.0 drivers, it’s been running for quite a while now..I’m even doing other things on this computer and it continues to run in the background.

I’ve also been keeping an eye on my DPC latency and it’s been low. With the 4.0 drivers, I would occasionally get a 1200-1500 spike, then a 6000 spike that would cause the video to freeze (both in CL-Eye Test and the temptTracker for the eye-writer).

If you need any more info from my computer to help analyze this issue, please let me know.

by the way, I want to add that I’ve been using the 4.0 drivers on my desktop (core i7 with windows 7 64) and haven’t had any trouble with it at all. But on my laptop, I need the 3.0 drivers or it freezes up.

update: I just recorded a 5100 latency spike and the video did NOT freeze (on my laptop with the 3.0 drivers)..it’s continuing to run as expected

Zentelis, are you talking only about the DirectShow drivers?

ankit - 25 March 2010 05:48 AM

Alex, Any clue on what could be the issue with the latest drivers/SDK ?

I am trying to find the hardware where I can replicate the problems you are seeing. Will let you know when I do that.

I have tried quite a few machines and had the problem on all of them (dell, asus, hp, apple running windows). It should not be hard to find hardware to reproduce the problem. Using two cameras, I’ve noticed that always the 0th camera freezes first (after a few seconds), the second sometimes runs up to a minute. When running either of the cameras alone the freeze happens after a few seconds, no matter which camera and which USB port.

It sounds like this could be a tiny bug in the driver, but it’s a real spoiler.

thanks aaichert for confirming once again a similar issue. Alex, i wonder why do you not have this problem. Please do let us know if you were able to reproduce and if you found a fix.