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compress: headings

This commit is contained in:
Motiejus Jakštys 2024-08-07 15:09:57 +03:00
parent 3a9d03883c
commit 31ca3af830
1 changed files with 6 additions and 11 deletions

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@ -14,8 +14,7 @@ FUDing it. If I were the PR submitter, I would certainly not appreciate this
comment. So I decided to conduct a non-scientific experiment: take a big piece
of Javascript and compare brotli with zstd.
Executive Summary
-----------------
# Executive Summary
* brotli compresses my chosen piece of Javascript better than zstd by 4-22%.
* zstd is faster than brotli by 50-80% (depending on platform) and uses less
@ -44,8 +43,7 @@ Software:
- brotli 1.1.0 from the distribution.
- zstd v1.5.6 from the distribution.
Test Harness
------------
# Test Harness
I picked Youtube's `desktop_polymer.js`, because:
@ -87,12 +85,11 @@ esac
Then symlink to it for each compression level:
```
$ for l in 3 6 19 22; do ln -s wrap zstd-${l}; done
$ for l in 3 6 9 19 22; do ln -s wrap zstd-${l}; done
$ ln -s wrap brotli
```
Compression Ratio
-----------------
# Compression Ratio
```
Filename Bytes % larger that br
@ -114,8 +111,7 @@ itself somewhat of an advantage over other compressors for this corpus.
Since `zstd -19` and `zstd -22` yield the same compression ratio, there is no
point going ultra, I will exclude `zstd -22` from the tests.
Decompression Speed
-------------------
# Decompression Speed
```
hyperfine --export-markdown $(hostname) -w 1 -N ./zstd-{3,6,9,19} ./brotli
@ -145,8 +141,7 @@ hyperfine --export-markdown $(hostname) -w 1 -N ./zstd-{3,6,9,19} ./brotli
Summary: `zstd -6` is fastest, brotli is slower by 50-80%.
Memory Usage
------------
# Resource Usage
```
poop ./zstd-{6,3,9,19} ./brotli