systemtap
2016
Probing Ruby 2.0 apps with SystemTap in RHEL7August 2, 2016
2014
SystemTap as a system wide strace toolMay 16, 2014
2012
Setup a SystemTap permission change trapApril 17, 2012
Peek into your Ruby app with SystemTapFebruary 2, 2012
Probing Ruby apps with SystemTap in RHEL 6January 5, 2012