experiment: zlib compression level

[moreati]

➜  mitogen git:(compression-level) ✗ time env MITOGEN_COMPRESSION_LEVEL=9 python3.14 hello_local.py
42
env MITOGEN_COMPRESSION_LEVEL=9 python3.14 hello_local.py  0.20s user 0.03s system 81% cpu 0.275 total
➜  mitogen git:(compression-level) ✗ time env MITOGEN_COMPRESSION_LEVEL=1 python3.14 hello_local.py
42
env MITOGEN_COMPRESSION_LEVEL=1 python3.14 hello_local.py  0.19s user 0.03s system 80% cpu 0.264 total

[moreati]

Looks like it makes little to no difference in a barebones benchmark

➜  mitogen git:(compression-level) ✗ hyperfine --warmup 1 -L level 0,1,6,9 'MITOGEN_COMPRESSION_LEVEL={level} python2 hello_local2.py'
Benchmark 1: MITOGEN_COMPRESSION_LEVEL=0 python2 hello_local2.py
  Time (mean ± σ):     695.6 ms ±   6.0 ms    [User: 502.4 ms, System: 121.3 ms]
  Range (min … max):   686.8 ms … 707.7 ms    10 runs
 
Benchmark 2: MITOGEN_COMPRESSION_LEVEL=1 python2 hello_local2.py
  Time (mean ± σ):     694.9 ms ±   3.9 ms    [User: 503.9 ms, System: 120.1 ms]
  Range (min … max):   691.2 ms … 703.5 ms    10 runs
 
Benchmark 3: MITOGEN_COMPRESSION_LEVEL=6 python2 hello_local2.py
  Time (mean ± σ):     696.7 ms ±   7.7 ms    [User: 506.7 ms, System: 120.2 ms]
  Range (min … max):   688.2 ms … 710.2 ms    10 runs
 
Benchmark 4: MITOGEN_COMPRESSION_LEVEL=9 python2 hello_local2.py
  Time (mean ± σ):     699.6 ms ±   5.9 ms    [User: 509.3 ms, System: 120.4 ms]
  Range (min … max):   693.4 ms … 713.9 ms    10 runs
 
Summary
  MITOGEN_COMPRESSION_LEVEL=1 python2 hello_local2.py ran
    1.00 ± 0.01 times faster than MITOGEN_COMPRESSION_LEVEL=0 python2 hello_local2.py
    1.00 ± 0.01 times faster than MITOGEN_COMPRESSION_LEVEL=6 python2 hello_local2.py
    1.01 ± 0.01 times faster than MITOGEN_COMPRESSION_LEVEL=9 python2 hello_local2.py

➜  mitogen git:(compression-level) ✗ hyperfine --warmup 1 -L level 0,1,6,9 'MITOGEN_COMPRESSION_LEVEL={level} python3.14 hello_local2.py'         
Benchmark 1: MITOGEN_COMPRESSION_LEVEL=0 python3.14 hello_local2.py
  Time (mean ± σ):     185.2 ms ±   2.3 ms    [User: 112.6 ms, System: 20.9 ms]
  Range (min … max):   182.4 ms … 190.1 ms    15 runs
 
Benchmark 2: MITOGEN_COMPRESSION_LEVEL=1 python3.14 hello_local2.py
  Time (mean ± σ):     184.2 ms ±   1.9 ms    [User: 112.5 ms, System: 20.4 ms]
  Range (min … max):   180.4 ms … 187.8 ms    15 runs
 
Benchmark 3: MITOGEN_COMPRESSION_LEVEL=6 python3.14 hello_local2.py
  Time (mean ± σ):     185.6 ms ±   1.2 ms    [User: 115.0 ms, System: 20.6 ms]
  Range (min … max):   182.9 ms … 187.2 ms    15 runs
 
Benchmark 4: MITOGEN_COMPRESSION_LEVEL=9 python3.14 hello_local2.py
  Time (mean ± σ):     189.6 ms ±   1.7 ms    [User: 119.1 ms, System: 20.6 ms]
  Range (min … max):   186.1 ms … 192.7 ms    15 runs
 
Summary
  MITOGEN_COMPRESSION_LEVEL=1 python3.14 hello_local2.py ran
    1.01 ± 0.02 times faster than MITOGEN_COMPRESSION_LEVEL=0 python3.14 hello_local2.py
    1.01 ± 0.01 times faster than MITOGEN_COMPRESSION_LEVEL=6 python3.14 hello_local2.py
    1.03 ± 0.01 times faster than MITOGEN_COMPRESSION_LEVEL=9 python3.14 hello_local2.py