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walles
Somehow highlight processes blocked on full pipes
If you exec() a process outputting lots of stuff, and forget to empty its stdout pipe (or stderr if that's where the output is), the process will block.
This tends to be hard to diagnose, and we should be able to make that easy.
ps seems not to include any helpful information on macOS at least, other ideas welcome:
https://unix.stackexchange.com/q/49669/384864