Injecting syscall faults in Python and Ruby

Counting bytes faster than you'd think possible

Summing ASCII encoded integers on Haswell at almost the speed of memcpy

Syscall Showdown: Python vs. Ruby

This sneaky 1-line change sped up subprocess#communicate 1000x+

Counting CPU Instructions in Python

Recording and visualising the 20k system calls it takes to "import seaborn"