FreeLists / arachne / [arachne] Re: Comprrressing ramdrives with Stacker

[Bart Buitinga <bartbuitinga@xxxxxxxxx>]

Arachne at FreeLists---The Arachne Fan Club!

Michal H. Tyc wrote:
> Arachne at FreeLists---The Arachne Fan Club!
> 
> On Thu, 06 May 2004 20:49:25 +0200, Bart Buitinga wrote:
> 
> 
>>Empty stacvols can be compressed 99% whereas drvspace seems to have some
>>obscure resistance against it. 
> 
> 
> Hmmm, are you sure then that DriveSpace's empty volumes are all nicely
> filled with zeroes?
> 
> 
>>Comparing the zippability of compressed ramdrive volumes there's a funny
>>conclusion to be drawn: Since those high compression rates (99/100%) can
>>only be achieved after a reboot, deallocated RAM must get as polluted as
>>deleted diskspace. Even after reinstalling xmsdsk, stacvols won't
>>compress to the same degree, so they must contain whatever the previous
>>RAM installation left there. 
> 
> 
> What's funny in this? Neither deallocation nor allocation doesn't result
> in wiping memory, it would be just a waste of time.

You're right, the fun is just because I never thought of ram as 
comparable with diskspace; just nice to find out that disk oriented 
tricks also work on ramdrives...

> 
> 
>>But then again: Is Stacker shareware? (I just found it on a HDD with
>>ms-dos 5.0 and win3.1, and it claims to be registered to one abc.xyz)
> 
> 
> Shareware? I don't think so. I bought my Stacker 3.12 with Caldera
> DR-DOS 7.03 (which you can download and use non-commercially for
> a trial period not limited to 90 days, whatever it means). I know
> also that you can buy Stacker 4.0 with IBM's PC DOS 7.
> 
> Michal
> 
Download for a trial period sounds like "shareware lite" but since I 
don't like to reinstall all the time this may be a reason to look onward 
for distributable compressing agents (And also because Stacker 2.0 is 
not exactly proving stable over here, if anyone likes to reproduce my 
experiment I'd love to hear about it.)

Anyway: Especially for 4 MB installations I think it's worthwile to 
document this construction. (I'm working on a diskette that eventually 
should work on a 2 MB system and I'll let you know)

B


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