https://bitbucket.org/erikedlund/sysdrain
https://github.com/edlund/sysdrain
Don't you just hate how fast and reliable computers have
become lately? Good news; sysdrain can help you get access
to a slower, less stable experience by eating available CPU
time and free RAM doing completely useless things with it.
Joking aside, sysdrain exists to help make stress testing
easier for developers. Interesting bugs tend to show up when
the system starts running low on important resources and
sysdrain makes it easy to create such conditions.