Matlab is getting slow

Hello,

my problem is as follows:

1. Matlab is getting really slow after some hours, even if I don't run any programs. There must be a process in the background that needs more and more memory and time. What is that? How can I resolve this problem without restarting Matlab?

2. I wrote a tool which creates several diagrams. It contains a function that updates these diagrams based on selected data. Everytime I call this function, it takes more time to finish, though the amount of data and calculation steps remains the same. When I restart the tool, the function runs very quik again (around 1 second), but gets slower with each call (after 10 calls around 2 - 3 seconds). Is there anything running in the background? What can I do to find it out?

I am using Matlab R2014a with Windows 7.

Thanks in advance!

Uwe

[Adam]

Have you analysed in the Task Manager or Process Manager to observe what is happening with the memory usage in Matlab during this time?

[Uwe]

the CPU usage was 25% of the Matlab process and around 683000K RAM. When I want to Close Matlab, it says there is a running process. I accept to end this process and Exit Matlab. Then in the Command Window the following message is displayed: Operation terminated by user during nesl_clearregistries. And Matlab still stays open. I have to Exit it via Task Manager.

After restarting Matlab, CPU is 0 and RAM is around 234000K.

Do you have an idea about that?