Can you extract 10 million keys from a hash (without blowing memory); write them to a file; start an external process (without forcing the current process to be swapped out), that will read them from that file and write them to other files several times; before reading them back into memory from the file; all in 108 seconds?
On my computer? No, I wouldn't even be able to read in 10 million keys without blowing memory.

On your computer? I've no idea - I don't have access. You can try it out (after writing the code, you'll have your answer within 2 minutes). Or you can just dismiss out of hand, without knowing for sure. Your call - it's your problem after all.

In reply to Re^3: In-place sort with order assignment by JavaFan
in thread In-place sort with order assignment by BrowserUk

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