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Forums > CSDb Questions > CSDb compression
2013-09-30 14:37
Didi

Registered: Nov 2011
Posts: 535
CSDb compression

Hiya,

does it make sense to compress single d64 files when posting an entry to save space or are the files stored compressed on fileserver/in database anyway.

Greets
Didi
2013-09-30 15:02
SIDWAVE
Account closed

Registered: Apr 2002
Posts: 2238
never heard of webservers who have autocompression of raw unknown formats. so dont think so. :)

only if the disk on webserver has autocompression (ala windows compressed volume etc.)

my guess is , no.
2013-09-30 17:05
chatGPZ

Registered: Dec 2001
Posts: 11523
the files are stored as is on an ftp. and space is not a problem =)
2013-09-30 17:17
Didi

Registered: Nov 2011
Posts: 535
Thanks for satisfying my curiosity.
2013-09-30 17:50
wacek

Registered: Nov 2007
Posts: 526
Please, if you don't have to, don't compress files. It makes it so convenient for click/run or click/drag/drop/run ;)

I think it only makes sense for multi-disk releases, just to make sure that people download complete release.
2013-09-30 20:31
MagerValp

Registered: Dec 2001
Posts: 1083
Quoting SIDwave
never heard of webservers who have autocompression of raw unknown formats. so dont think so. :)

It's supported by all major web servers and and browsers:
http://en.wikipedia.org/wiki/HTTP_compression
2013-09-30 23:01
SIDWAVE
Account closed

Registered: Apr 2002
Posts: 2238
Quote: Please, if you don't have to, don't compress files. It makes it so convenient for click/run or click/drag/drop/run ;)

I think it only makes sense for multi-disk releases, just to make sure that people download complete release.


also in case of fail, and datarescue, compressed data = risk to loose it.
2013-09-30 23:02
SIDWAVE
Account closed

Registered: Apr 2002
Posts: 2238
Quote: Quoting SIDwave
never heard of webservers who have autocompression of raw unknown formats. so dont think so. :)

It's supported by all major web servers and and browsers:
http://en.wikipedia.org/wiki/HTTP_compression


ok, what year was that invented ?
2013-10-01 00:56
chatGPZ

Registered: Dec 2001
Posts: 11523
Quote:
It's supported by all major web servers and and browsers:

not quite what didi asked about though :) (but it makes the question about zipping or not zipping d64s kinda irrelevant, indeed)
2013-10-01 01:09
Moloch

Registered: Jan 2002
Posts: 2972
Quoting SIDwave
ok, what year was that invented?

mid to late 1990s
2013-10-01 02:21
Urban Space Cowboy

Registered: Nov 2004
Posts: 45
Quoting Didi
does it make sense to compress single d64 files when posting an entry to save space
Yes, if only because ZIP and other archives retain file timestamps which the uncompressed D64s don't.

Quoting wackee
Please, if you don't have to, don't compress files. It makes it so convenient for click/run or click/drag/drop/run ;)
gzip'd D64s are just as "convenient" in this way as uncompressed ones, at least with VICE.
2013-10-01 03:03
chatGPZ

Registered: Dec 2001
Posts: 11523
Quote:
if only because ZIP and other archives retain file timestamps which the uncompressed D64s don't.

if only ppl wouldnt rip apart spreaddisks and copy each release into a new d64, then it'd be a good point :)
2013-10-01 06:34
Bitbreaker

Registered: Oct 2002
Posts: 510
As if there would be so many new releases that unzipping becomes uncomfortable :-)
2013-10-01 10:51
Krill

Registered: Apr 2002
Posts: 3098
As others have commented, uploading compressed single disk images is completely pointless due to network transport compression (and also transparent compression in filesystems and databases).

Quoting wackee
I think it only makes sense for multi-disk releases, just to make sure that people download complete release.

Yes, and there, we'd be better off with some container format as seen on commercial C-64 emulators (see http://www.retroplatform.com/kb/15-122), which is basically a standard archive (usually compressed, think tarball or zip) with all required disk images and a manifest file (with meta-data like emulator settings), and possibly also other stuff like screenshots and .sid files, scrollers in plaintext and whatnot. Such a scheme would also make disk-changing in emulators and modern 1541 replacements a breeze.

It's long overdue for our community to define an open standard similar to that.

Are there any plans to support something like that in VICE, once it exists, groepaz?
2013-10-01 11:02
chatGPZ

Registered: Dec 2001
Posts: 11523
no. else we had already included cloantos format.
2013-10-01 12:33
Doc Strange

Registered: Feb 2002
Posts: 101
Good to know. I usually compress them but since it's not really needed I won't do it anymore.
2013-10-02 02:41
Urban Space Cowboy

Registered: Nov 2004
Posts: 45
Quoting Groepaz
if only ppl wouldnt rip apart spreaddisks and copy each release into a new d64, then it'd be a good point :)
don't complain to me, complain to them :)

Just recently, it's obvious that Modul Utility V1.3, Edit Memory, and Save Program are all the same disk with all files but one scratched. What a waste of time! The uploader could've uploaded the original disk image for one database entry, then copied and pasted the URL into the others.
2013-10-02 14:35
chatGPZ

Registered: Dec 2001
Posts: 11523
personally i love it when someone makes a "clean" d64 and then breaks the release in the process =P
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