Lookout Exe high memory usage

[IvanR]

I have a question about Lookout V6.1 memory usage.

Namely, from time to time Lokout memory usage goes up  to incredible 1GB of RAM.

Lookout project uses less than 500 points, but since it is used to monitor and acquire data from entire factory floor it must run continuously.

When such high memory usage occurs Windows displays "Low Virtual Memory" notification and only rebooting of the OS solves the problem

Is there any common cause of this problem that can be easily resolved?

Screen-shot  of the task manager is attached

[Ryan.S]

I don't know if there is a common cause of this problem. Probably a specific object causes this problem. How long does it take Lookout memory to go up to 1G?

Did you add or modify any object before you saw this problem?

[IvanR]

Sorry for the delay.

Every few weeks memory usage rises. And about any specific object causing this problem, I am not really sure and we will have to investigate.

Anyway, we never had this problem during development at our office , so probably extended up time has something to do with it.

I will have to ask our partners how long it takes for Lookout.exe to occupy so much memory.

Last week my colleague was at the plant when this happened again and simple restart of the SCADA runtime lookout was enough to solve this problem. You will find new screen shot of the task manager attached

Ivan Radosavljevic

UNO-LUX PROCESSING

Serbia

[iwanhoo]

I just wanted to refresh the subject that my colleague had started.

We still have the same problem. Is there any lookout object that can potentionally cause increasing memory usage?

The customer cannot sugest when the problem occured for the first time, because they distinguished the problem at the moment when memory usage become the problem for OS (Windows XP) itself, so we cannot determine which object that we added start to cause the problems.

Any idea will be helpfull.

Ivan Krantic

UNO-LUX PROCESSING

[Ryan.S]

Let me take a look at your process. You can upload it to ftp://ftp.ni.com/incoming

[iwanhoo]

I'm waiting my colleague to prepare the application and then I will post it on ftp.

One more thing I noticed.

No matter how much memory lookout occupies when I minimize it, eather by clicking on the minimize button or clicking on the lookout at the start bar, memory usage falls immediately to 10M, and when I maximize lookout again rises to 15M and works normaly again (when I say normaly I mean slowly increasing memory usage, aproximately 300K every 15 minutes).

Does it mean anything to you?

Ivan Krantic

UNO-LUX PROCESSING

[iwanhoo]

One more thing, whenever I open some panel, memory usage rises. Whenever I change active group on HyperTrend memory usage rises. But When I close or minimize the panel memory usage doesn't fall. Is that normal?

Ivan Krantic

UNO-LUX PROCESSING

[DusanV]

Ryan,

I am FSE for territory where customer is coming from. I sent you application today.

Best regards,

Dusan Vukasinovic

[Ryan.S]

Ivan,

I got your process. I tried to run your process and it looks like I have the same problem. If I change between different group, the memory usage slowly goes up. I'm able to increase the memory by 10M in this way. And once I minimize the Lookout, and then restore it, the memory will become normal.

I guess the problem is related to the hypertrend, especially when you have a lot of groups and switch between them. I will try to debug it and see if we can improve something.

The workaround is to minimize the lookout.

[iwanhoo]

Yes, that's the same problem we have.

Please let me know if there is any progress and thanks for helping us.

Ivan Krantic

UNO-LUX Processing