Linked by Thom Holwerda on Sat 6th Oct 2007 23:12 UTC, submitted by Kaj de Vos
Syllable, AtheOS The first development release of Syllable Server is available. It provides a text mode Linux environment, but also contains a preliminary graphical environment built on the framebuffer device, with DirectFB and SDL on top. The planned graphical environment from Syllable Desktop is not included yet. The installation procedure is short, but is still manual - and resembles the installation procedure for the old AtheOS. Included are tools such as a graphical web browser, a file manager and an editor. One thing Syllable Server is designed for is to function as a light-weight virtualisation platform for running other operating systems (or multiple instances of itself). The QEmu virtualisor/emulator is included, and the KQEmu Accelerator kernel module is integrated into the system. There's a screenshot of Syllable Server running on Syllable Desktop, installation and usage instructions, a torrent (preferred), and an installation package [.tar.7z].
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RE: lzma
by DigitalAxis on Sun 7th Oct 2007 22:04 UTC in reply to "lzma"
DigitalAxis
Member since:
2005-08-28

On the other hand, in my experience LZMA compressors tend to take several times longer than other programs to compress data... (recent test with about a gig of .fits files from my research; gzip 5:48, bzip2 11:49, 7zip 56:51; none really compressed them very much though gzip was worst and 7zip was best) So it's a tradeoff between compression ratio and speed. If you don't care about compression time, LZMA is awesome.

Reply Parent Score: 2

RE[2]: lzma
by sbergman27 on Sun 7th Oct 2007 22:23 in reply to "RE: lzma"
sbergman27 Member since:
2005-07-24

DigitalAxis,

No. These days you have a choice with lzma. The package I use accepts switches -1 through -9, like gzip. At -1, the compression is about like bzip2 and with comparable speed. -7 is the default and the sweet spot, regarding both compression speed and memory usage vs compression effectiveness.

-9 is slower, yes. But it gets better results.
Gzip is still good for when you need speed. Lzop is great for when you need *blazing* speed with, still, remarkably effective compression. (Well... all things considered.)

Bzip2 is still good for... I'm not sure what. But it's popular. ;-)

lzma has been hampered by implementations with incredibly obtuse user interfaces, unfortunately. I just recently extricated myself from that mess. These days I just use it like gzip.

Edited 2007-10-07 22:41

Reply Parent Score: 2

RE[3]: lzma
by DigitalAxis on Tue 9th Oct 2007 03:17 in reply to "RE[2]: lzma"
DigitalAxis Member since:
2005-08-28

Apparently my version of 7z also accepts the 0-9 parameter... I never noticed. And yes, it appears to default to 9.

bzip2 is good for being the best compressor commonly installed on Linux systems. You rarely find rzip or rar there. And actually, rar did worse than bzip2 on my little test, but I think that was with non-optimal settings.

Reply Parent Score: 2