Re: svn commit: r329882 - in head/sys: conf kern sys vm

Hi Jeff, 2018-02-23 23:51 GMT+01:00 Jeff Roberson : > Add a generic Proportional Integral Derivative (PID) controller algorithm > and > use it to regulate page daemon output. That looks pretty nifty. Looking at the code, it exposes metrics through sysctl. Be sure to give

Re: svn commit: r329882 - in head/sys: conf kern sys vm

Hi, I'm curious, it looks like Kd is quite significant by default, I assume to limit the slew rate of the output. Given that the error is an integer, and pidctrl_daemon() is called at irregular intervals, it seems to me that the derivative will be very noisy. In my experience with PID

svn commit: r329882 - in head/sys: conf kern sys vm

Author: jeff Date: Fri Feb 23 22:51:51 2018 New Revision: 329882 URL: https://svnweb.freebsd.org/changeset/base/329882 Log: Add a generic Proportional Integral Derivative (PID) controller algorithm and use it to regulate page daemon output. This provides much smoother and more responsive