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Shrinking Using UPX

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Posted by Onoitsu2   USA  (248 posts)  Bio
Date Fri 10 Aug 2007 01:28 PM (UTC)
Message
I have been shrinking MANY programs and dll's lately using UPX compression, so that I can put a few more things on my USB Pen Drives. I have discovered that the LUA dll can be shrunk quite a bit, actually for LUA50.dll (Version 3.74 of MUSHclient) the compression ratio was slightly over 50%. This is not VERY much, but might even shrink the installer by 75k, that is not much at all, but for those on dialup connections, that can be considered bloat of up to a minute or more depending on ISP.

Just something I stumbled upon, and I noticed that the MUSHclient.exe itself was fully UPX compressed, which was nice to know, and if you are using an older version of the program, like myself, the spell checker dll can be packed by about 43%. This is not an issue with newer versions as I believe that is no longer included, due to licensing.

Even the installers can be UPX packed by a little bit (Version 4.06 was packed by 0.015MB). Again it is not much, but adds up to something on bandwidth for something being downloaded several hundred times a month.

Just my 2 Cents :)

Laterzzz,
Onoitsu2
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Posted by Shaun Biggs   USA  (644 posts)  Bio
Date Reply #1 on Fri 10 Aug 2007 05:24 PM (UTC)
Message
Not to knock it, but isn't UPX just LZO compression? Does it have a self-extractor? Most people probably wouldn't recognize the extension even though it's been out for over a decade, but if it self-extracts, that's a non-issue.

It is much easier to fight for one's ideals than to live up to them.
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Posted by David Haley   USA  (3,881 posts)  Bio
Date Reply #2 on Fri 10 Aug 2007 05:33 PM (UTC)
Message
Not to be overly obsessive about this but it is Lua, not LUA. It's not an acronym. :)

David Haley aka Ksilyan
Head Programmer,
Legends of the Darkstone

http://david.the-haleys.org
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Posted by Nick Gammon   Australia  (23,121 posts)  Bio   Forum Administrator
Date Reply #3 on Fri 10 Aug 2007 09:43 PM (UTC)
Message
I used to UPX compress MUSHclient, but stopped doing it when I moved the resources to the resources DLL file. After all, the installer download is compressed anyway, and compressing a compressed file doesn't generally do much. If I was worried about that last 1% for the installer size, I can always crank up the compression ratio for the installer.

Anyone who downloads MUSHclient, and wants to put it somewhere small (like a memory stick) can always use UPX themselves, after installing. However I think these problems go away a bit - we used to have small floppy disks (around 1.4 Mb) but nowadays you have 2 Gb memory sticks, so I think the need to save tiny amounts of disk are gone, a bit.

- Nick Gammon

www.gammon.com.au, www.mushclient.com
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