Linux

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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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How to write a 'tar' command (lemmy.sdf.org)

submitted 1 year ago by sebastiancarlos@lemmy.sdf.org to c/linux@lemmy.ml

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[–] eager_eagle@lemmy.world 4 points 1 year ago (1 children)

as in time wasted transferring a highly compressible file that you didn't bother compressing first?

it's only a waste of time when the file format is already compressed.

[–] PuppyOSAndCoffee@lemmy.ml -1 points 1 year ago (1 children)

Unless you measure your baud in dial up modem, it often can take longer to compress / transport / uncompress than just transfer directly.

[–] eager_eagle@lemmy.world 4 points 1 year ago (1 children)

unless you're picking a slow compressor that's not true at all

Original size | 100 GB
Compressed size | 47.8 GB (2.091 ratio)
Transfer speed | 1 Gbps (125 MB/s)
Original transfer time | 100 GB / 125 MB/s = 800 seconds
Compressed transfer time | 47.8 GB / 125 MB/s = 382.4 seconds

Compressor | Snappy
Compression ratio | 2.091 ratio
Compression speed | 565 MB/s
Decompression speed | 1950 MB/s
Compression time | 100 GB / 565 MB/s = 177 seconds
Decompression time | 47.8 GB / 1950 MB/s = 24.5 seconds

Transfer time w/o compression | 800 seconds
Transfer time with compression | 177 + 382.4 + 24.5 = 584.9 seconds

[–] PuppyOSAndCoffee@lemmy.ml 0 points 1 year ago

Add a zero to your link speed - 10Gbs