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New File Format (lemmy.ml)

submitted 11 months ago by yogthos@lemmy.ml to c/programmerhumor@lemmy.ml

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[-] AVincentInSpace@pawb.social 3 points 11 months ago

zstd may be newer and faster but lzma still compresses more

[-] gamma@programming.dev 11 points 11 months ago* (last edited 11 months ago)

Thought I'd check on the Linux source tree tar. zstd -19 vs lzma -9:

❯ ls -lh
total 1,6G
-rw-r--r-- 1 pmo pmo 1,4G Sep 13 22:16 linux-6.6-rc1.tar
-rw-r--r-- 1 pmo pmo 128M Sep 13 22:16 linux-6.6-rc1.tar.lzma
-rw-r--r-- 1 pmo pmo 138M Sep 13 22:16 linux-6.6-rc1.tar.zst

About +8% compared to lzma. Decompression time though:

zstd -d -k -T0 *.zst  0,68s user 0,46s system 162% cpu 0,700 total
lzma -d -k -T0 *.lzma  4,75s user 0,51s system 99% cpu 5,274 total

Yeah, I'm going with zstd all the way.

[-] jodanlime@midwest.social 6 points 11 months ago

Nice data. Thanks for reminding me why I prefer zstd

[-] AVincentInSpace@pawb.social 1 points 11 months ago

damn I did not know zstd was that good. Never thought I'd hear myself say this unironically but thanks Facebook

[-] gamma@programming.dev 5 points 11 months ago

*Thank you engineers who happen to be working at Facebook

[-] AVincentInSpace@pawb.social 1 points 11 months ago

Very true, good point

[-] gamer@lemm.ee 2 points 11 months ago

As always, you gotta know both so that you can pick the right tool for the job.

this post was submitted on 13 Sep 2023

688 points (97.6% liked)

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