View Full Version : Very High CPU

August 6, 2003, 11:56:37
When i set the LiveVideoContinuous to true the CPU shot up to 100%, is that usual? Is there any way to reduce the CPU usage other than using a timer with MemorySnapImage?


Johannes Vogel
August 8, 2003, 17:44:00

The CPU usage depends on several factors:

- video format of the source (UYVY, RGB24 etc.)
- type of graphics card
- pixel depth of the desktop
- processor type and speed.

Best regards
IC Support

August 9, 2003, 03:25:24

Below is my setting, all hit 100% of CPU utilization.....

RGB24 - video format of the source (UYVY, RGB24 etc.)
G-Force2 - type of graphics card
32Bits, 1024x768 - pixel depth of the desktop
Pentium 4 (2.4GHz) - processor type and speed

please advice... Thanks...

Regards, SM Lau

Stefan Geissler
August 12, 2003, 13:21:28

Is this high CPU load also, if you use the Demoapp sample?

When you got a high processor utilisation on fast processors, there is a chance that "Write Combining" is not enabled.

You can verify that by right clicking on the desktop then

(Eng) Properties -> Settings -> Extended (?) -> trouble-shooting -> Write Combining

After you enabled this you have to reboot your system.
Then the system should run faster and the high processor utilisation should drop to a lower value.

August 12, 2003, 18:29:38
May I know how can I check "Write Combining"? I'm using windows xp (english version).... I have follow you step above (Eng) Properties -> Settings -> Extended (?) -> trouble-shooting -> Write Combining, but i still cannot find "Extended (?)" as you stated above. Please advice, thanks..

Stefan Geissler
August 14, 2003, 08:58:57

In this case, you have no "Write Combing" property to set.