Experimental Physics and
Industrial Control System

Jörn Dreyer via Tech-talk <tech-talk at aps.anl.gov> · Wed, 27 May 2020 14:03:58 +0200

Hello,

currently I have a very strange problem in a code I'm developing to read out 
cameras from ZWO. I ran into a severe problem in the image readout handler. 
When calling doCallbackGenericPointer() the IOC creates every time a couple of 
new threads and consumes lot of CPU power ( 300% on a quad core). So after a 
very short time the system becomes unresponsive and has to be switched off.
The image is 3520*4656 bytes in size and is in monochrome mode, so UInt8 as 
data type.

In a GUI (CS-Studio) that is displaying the image data as Intensity graph I 
observe a "disconnect" state for every cycle of the image, once the NDStdArray 
has been enabled. In between it shows "No data".

Has anybody seen such behavior before? Any ideas welcome how to search for the 
reason of this.

Regards,

Jörn Dreyer

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System