Keith Devens .com - Weblog: 7-zip

Monday, January 20, 2003

7-zip

I think 7-zip might be my new main zip program. I zipped a directory tree of 514 mb and 7-zip zipped it to 287 mb while PowerArchiver (version 6.11.0, what I currently use) zipped it to 317, a difference of 30mb. I'm not sure which one compressed faster though.

Update, I compressed the same directory tree using the 7-zip format, and I made a "solid archive" (which is like a tar.gz instead of a .zip, if you know what I'm talking about), and the file wound up being only about 86 megs! It took forever to compress though. 7-zip seems to be much slower than other compression programs, even when 7-zip is using normal zip compression. But, it seems to be faster at browsing an existing archive, and my version of PowerArchiver choked on things that 7-zip had no problem with.

Unfortunately, I don't have Winzip installed on my system, so I can't compare it to these results.

Permalink | 5 Comments | id 3342

00:13 (utc-5)
edited: 01:17 (utc-5)

Comments

M. Bean wrote:

What about Winzip? How does it compare?

∴ M. Bean | 20-Jan-2003 12:53am est | #1315

M. Bean wrote:

As it is, for zipping, I've just been using the built ZIP archiving features of WinXP lately.

∴ M. Bean | 20-Jan-2003 12:53am est | #1316

Yeah, that's probably what I'll use after I install XP. I don't have Winzip installed on my system, actually, so I can't check.

Justin wrote:

I've been using 7zip for a while now and find it much better than WinZip. The 7z format seems really good. It is slower but only noticeable when I'm compressing up Gigs of data for a backup, when thats the case I dont care too much about time. Its also got a great command line interface which is great for batch file backups across the network.

I still use the XP zip interface quite a bit when I dont really care about compression ratio's, but if you want to squeeze your hardrive go 7zip ultra compression.

∴ Justin | 23-Jun-2004 9:12pm est | #4851

Jason Arrow wrote:

I just started using 7 Zip and I'm very happy with its results so far. I compressed a 81 mb program that normally averages 36-40 mb using other archivers and 7 Zip produced a 21 mb file!!! I am testing it out and maybe I'll stick with it. I also like its 256 bit encryption.

∴ Jason Arrow | 8-Dec-2004 3:02am est | #6539

Feel free to post a comment below. Please see my comment policy.

Formatting Rules (No HTML):

**bold**, *italic*, _underlined_, --strikeout--
"text"="url" creates a link, and URLs are auto-highlighted
Blockquote: Like e-mail, begin paragraph with > (greater-than sign)
Lists: begin paragraph with *,-, or + (unordered), or # (ordered)
Code block: ?!code:language=perl|php|sql|javascript|etc.{\n}...{\n}?!/code

RSS feed RSS feed for Keith's Weblog
Atom feed Atom feed for Keith's Weblog
Weblog archive
Recent comments
on 4 posts