sebastiancarlos@lemmy.sdf.org to LinuxEnglish · 1 year agoHow to write a 'tar' commandlemmy.sdf.orgimagemessage-square153fedilinkarrow-up1861arrow-down117
arrow-up1844arrow-down1imageHow to write a 'tar' commandlemmy.sdf.orgsebastiancarlos@lemmy.sdf.org to LinuxEnglish · 1 year agomessage-square153fedilink
minus-squareEager Eagle@lemmy.worldlinkfedilinkEnglisharrow-up4·1 year agoas 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.
minus-squareEager Eagle@lemmy.worldlinkfedilinkEnglisharrow-up4·1 year agounless 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
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.
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unless you’re picking a slow compressor that’s not true at all
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