CODEWITHSUNDEEP
intellij-idea
Calicoder
Calicoder

Reputation: 1452

IntelliJ uses more memory than allocated

My IntelliJ goes unbearably slow, so I was fiddling with memory settings. If you select Help -> Change Memory Settings, you can set the max heap size for IntelliJ. But even after restarting, then running Mac's Activity Monitor, I see it using 5.5GB even though I set the heap to 4092MB.

It's using 1.5GB more than allocated for heap. That's a lot of memory for permgen + stack, don't you think? Or, could it be that this memory setting actually doesn't have any effect on the program?

Upvotes: 3

Views: 945

Answers (1)

CrazyCoder
CrazyCoder

Reputation: 401975

It's the virtual memory you see, it may also include memory mapped files and many other things occupied by the JVM internals, plus the native libraries for a dozen of Apple frameworks loaded into the process. There is nothing to worry about unless you get OOM or IDE becomes slow.

If it happens, refer to the KB documents and report the issues to YouTrack with the CPU/Memory snapshots.

Upvotes: 1

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