Win2000 much slower than Win98

[dodek]

Hello
I have two ATE-Systems.
Both have the same devices. Except the Industiral-PC and operationg System.
One has Win98 the other has Win2000

In my test app, wich runs under Testand 2.0 and Imaq 2.6, I am doing pixel comparing from desired to actual
picture. It is working fine, but under Win2k the function takes almost 2sec and under Win98 just a few milliseconds.

I think the NI-Function imaqGetPixel will cause this.

Please see the attached code for more information

Greetings Juergen

[BruceAmmons]

I can't tell you why the time is different, but I can suggest a different way to code it that might make a difference.

I would consider extracting the entire arrays as 32 bit integer blocks, then loop through the arrays and compare the 32 bit integers as a whole. You might be able to map into the image storage to get to the arrays to avoid making a copy.

Bruce

[dodek]

Hello Bruce,

Now I had time to take care about this problem.
Thanks for your usefuls hints (Egg of Columbus).
I have placed them in my code and now on Win2k and Win98 I have the desired behavoir.

So my result is that imaqGetPixel is much slower under Win2k.

So if you have no idea I will post this message once again to make more attention to this problem

Greetings from
the Lake of Constance (Germany)
Juergen