Prebuilt binary with PGO here

[kkocdko]

trafficstars

Update 20240902: use this newer version then run ./zcodecs ect xxx.

Profile-Guided Optimizations enabled.

[kkocdko@klf misc]$ ./hyperfine -w 1 -r 5 './ect_flto -5 1.png 2.png 3.png '
Benchmark 1: ./ect_flto -5 1.png 2.png 3.png 
  Time (mean ± σ):      5.400 s ±  0.011 s    [User: 5.351 s, System: 0.035 s]
  Range (min … max):    5.389 s …  5.411 s    5 runs
 
[kkocdko@klf misc]$ ./hyperfine -w 1 -r 5 './ect_flto_pgo -5 1.png 2.png 3.png '
Benchmark 1: ./ect_flto_pgo -5 1.png 2.png 3.png 
  Time (mean ± σ):      4.481 s ±  0.014 s    [User: 4.428 s, System: 0.042 s]
  Range (min … max):    4.469 s …  4.503 s    5 runs
 
[kkocdko@klf misc]$ 

The real result depends on your workload.

#120