Trend memory

[o_atlina]

Hello! After reading the trend on the client, the memory on the server is drastically reduced. When the trend window is closed, the memory size is not restored. How to clear memory by closing the trend bar. The trend is called using the OpenTrend function. System OpenSuse Leap 42.1 Client / Server

[leoknipp]

If the process needs additional memory it is allocated by using operating system functions.
Sometimes if the memory is not needed anymore it is freed only internally in the process without "giving back" the memory to the operating system, depending on the memory organization in the process.
When the process needs more memory again the already allocated memory is used. New memory from the operating system is only allocated if it is needed.

If you do not see an increasing memory usage every time when the function is repeated (e.g. opening the trend panel) it is no problem that the memory is not freed when the panel is closed.

Best Regards
Leopold Knipp
Senior Support Specialist

[o_atlina]

At frequent viewing of the trends first there was an error "Memory almost full" , later "RAM memory full" and the server entered "emergency mode".

[leoknipp]

In the first posting you have described that memory usage on the client did not decrease when opening and closing the trend.
The memory usage at the client has no effect to the memory usage on the server.

If the server is entering the emergency mode due to low memory you first have to look which process is using a lot of memory.
Also you have to look if there are processes using a lot of CPU time.

Best Regards
Leopold Knipp
Senior Support Specialist