Unix sort command takes much longer depending on where it is executed?! (fastest from ProcessBuilder in program run from IDE, slowest from terminal)

java performance macos unix sorting

I'm going to venture two guesses:

perhaps you are invoking different versions of sort (do a which sort and use the full absolute path to recompare?)
perhaps you are using more complicated locale settings (leading to more complicated character set handling etc.)? Try
```
 export LANG=C sort -t'    ' -k5,5f -k4,4f -k1,1n /input/file -o /output/file
```

to compare

java performance macos unix sorting

Avoid the need of calling external sort entirely.

CodeHunter