UPX, memory saver

euleralves · 08-06-06, 09:01 AM

Marvelous little program! It compact the machine code and you dont need install a unpacker! The code is still machine code.
I achieve a save of 21M or 61% !! Up till now...

UPX: http://upx.sourceforge.net

Quote:

UPX is a free, portable, extendable, high-performance executable packer for several different executable formats. It achieves an excellent compression ratio and offers very fast decompression. Your executables suffer no memory overhead or other drawbacks because of in-place decompression.

Pay attention to the drops: Minimo from 7M to 2.4M, PlanMaker 5.1M to 1.7M, Cash Organizer 3,9M to 1000K !!! An about of 66% of memory save!

Mokubai · 08-07-06, 04:12 AM

UPX does have it's downsides. Firstly I've found that whatever header it uses at the start of an executable isn't VGA compatable and programs like iGo 2006 don't like it at all and give a black screen and nothing else. Some programs (like Acrobat Reader) do not like being compressed or having any of their libraries being compressed.

As always with this kind of thing YMMV. I'm just waiting for them to work the bugs out of it to work a bit better, sure it works well but it has some issues.