I ran your code, at the start it has a res memory consumption of around 12MB.
After a minute this is growing to 18MB,
I'd also say the process's memory consumption is growing in random steps.
With perl5.9.5 it uses less memory and the growth is a bit slower, but still there.

I didn't understand what you wrote about my code, since threadscount is locked until it's increased and $count=$threadscount.
Could you perhaps explain this ?

I found however an other flaw, it would be possible that the mainthread obtains it lock on $threadscount BEFORE the first thread increases it.
Since the main thread waits in it's main loop until $threadscount is 0, there could (possibly) be created more than 300 threads.
But (hopefully) fixing this didn't change anything.

In reply to Re^4: memory leaks with threads by misc
in thread memory leaks with threads by misc

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