Not surprising really. You are starting & reaping a million threads, each of which call a sub that returns a constant and then dies. The cost of starting and reaping each thread is about 1000 times the cost of calling that sub. The more concurrent thread you run, the more competition there is for system resources (mostly memory), so the longer it takes to start and reap each thread.

For want of a better anology, its like having a million navvies try to dig a trench, whilst sharing one shovel.

Perhaps a better anology: a million miners dig a one-man wide tunnel, one shovel load at a time. The more you send into the tunnel, the harder it is for each man to get to the digface and get his one shovel full.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
RIP PCW It is as I've been saying!(Audio until 20090817)

In reply to Re: ForkManager Running Real Slow by BrowserUk
in thread ForkManager Running Real Slow by zacc

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