Speeding up exit(2)?

Wojciech Puchar wojtek at wojtek.tensor.gdynia.pl
Sun Mar 15 05:48:45 PDT 2009

>> it swapped a lot, then wrote "end" and immediately exited.
> Hmmm... yes, it's strange. With malloc-ed space, exit is also very
> fast. On a 2 GB machine with amd64, exit is almost immediate:

try mallocing 2 million times 2 kilobytes and fill.

maybe exit first free all malloc'ed space which is definitely nonsense.

> If I find a way to isolate the problem, I'll post it here.

maybe your problematic program uses atexit and exit actually calls part of 

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