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0 pointsjonas218mo ago0 comments

zstd uses a fairly low compression level by default. If you run with `zstd -19 -o compiler.tlo.zstd stdlib/compiler.tlo` you will probably get much better compression than gzip, even at its highest setting.

That said, the tiny code footprint of gzip can be a real benefit. And you can usually count on gzip being available as a system library on whatever platform you're targeting, while that's often not the case for zstd (on iOS, for example).

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kazinator8mo ago

Additional datapoints:

Tne Zopfli gzip-compatible compressor gets the file down to 54343. But zstd with level -19 beats that:

  -rw-rw-r-- 1 kaz kaz 54373 Jul  8 22:59 compiler.tlo.zopfli
  -rw-rw-r-- 1 kaz kaz 50102 Jul  8 17:43 compiler.tlo.zstd.19

I have no idea which is more CPU/memory intensive.

For applications in which compression speed is not important (data is being prepared once to be decompressed many times), if you want the best compression and stick with gzip, Zopfli is the ticket.

attentive8mo ago

Try lzip. It's about 10 times faster than zopfli though it's not gzip compatible. And it beats zstd -19 on compression.

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