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Matt328

Strange CPU/Memory Usage

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My project is a game engine, but I figured this question belongs here since it seems to be a general programming issue and could happen regardless of what I'm programming. That being said, when I first built and ran the program, it sucked up 50% CPU usage, and ~35mb of memory. Those numbers were fairly constant throughout numerous builds. My most recent build, I left the program run for about 15 minutes (I had to leave the computer) When I came back, CPU usage was at 5% and memory was ~6mb. Now, CPU usage is always below 6%, but the memory usage is always above 34mb. Does anyone know why all of the sudden without making any changes, it uses less CPU time?

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The CPU and memory usage numbers you see in the Task Manager are not very useful. Ignore them. The change is probably due to another process taking up a lot of the CPU or your engine doing a lot of waiting, and the OS decided to reclaim some of the memory.

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