Increase Activity monitor update frequency to less than a second I want to use the "CPU history" to monitor how some program uses the CPU, but the update frequency of "very often (1 sec)" is not fast enough for me. The changes I want to observe happen in less than a second (I am thinking of 0,1 second). 

I would appreciate if someone can tell me if it is possible to go beyond 1 second. Or if there are any other tools that offer faster updates plus a graphical view of the cpu usage history.
I have found a few options:


Menumeters, says its incompatible with 10.11 due to code signing restrictions
XRG, an open source Mac resource monitor
Stater, $4.99, available on Mac App Store
Monity, $2.99, great if you want it in Notification Center
iStat Menus, $18, tends to be the most popular
System Monitor, $4.99, sits in menu bar.