Am 09.11.2012 um 13:33 schrieb David <turbolad...@yahoo.co.uk>:
> Hi, I have tried something which actually boosts performance

It doesn't; it just moves the load from one limited resource (RAM) to another 
one (CPU cycles), adding its own overhead on the way. It just means that your 
machine got too large an engine for your tires. Save on CPU power and get more 
RAM next time.

> : a compressed RAM disk used as swap space.

It nearly sounds as good as "hey, we've got virtual memory, let's generate an 
incredibly large RAM disk". To me it sounds like investing into sovereign debt 
of your home country and paying your interest rate with your own increased 
taxes. Why swap into RAM if your process could use it as well?

About the cost of compression: This idea was already annoying decades ago 
(doesn't anyone remember those "RAM extenders" for MS-DOS that gave you "more 
RAM than your computer contains"?) when software suddenly got inexplicably slow 
(until you found the driver chewing on its own tail by trying to decompress 
itself) and was one of the reasons I moved to SCO and BSD/386.


Achim

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