[cvsnt] Re: Latest updates - Delta compression -kz

[Tony Hoyle]

Björn Carlsson wrote:
> After only one revision the log command worked, but when I tried after 4
> revisions it didn't work anymore.

Hmm.. log is broke.  Checkout etc. still works though, so I've no idea 
what log is doing that's special.

> One more question, what is the difference, with this new binary diff 
> thing, I can't notice the difference? I thought it should only store the 
> diff between two revisions? I tried to make very small changes in an 
> icon file, but it seemed to add full file size for every revision.
> /Björn Carlsson

It's about 4* more efficient than a text diff on random binary data 
(multiple versions of cvs.exe in my tests), but you'll never get 100% 
compression out of anything - It is only storing the differences within 
a certain granularity depending on the size of the file (for large files 
it works in larger blocks for speed) - a fully optimised diff would of 
course use a block size of 1 byte, but that'd take about a week to run....

Tony