Woah

Woah is a script that you can wrap commands with, and it will wait until the load average is reasonable before running them.

Usage

Similar to nice, you just start your command with woah and everything after that will be run unchanged.

# Maybe you have a lot of shells doing stuff
woah tar -xvzf /tmp/foo.tar users/tim

# Limiting concurrency of xargs
(cd /users; ls -d *) | xargs -P32 -n1 --no-run-if-empty woah tar /tmp/{} /users/{}

Bugs and such

https://github.com/thatch/woah

License

Apache 2.0