Accurate Netdata CPU frequency monitoring for Radeon.bapm machines using turbostat (AMD 2014+)

[arglebargle]

Cpufreq is no longer accurate for recent AMD machines with boost clock rates. Here's a Netdata plugin and setup instructions to allow querying turbostat for CPU frequency, this accurately reports boost clocks on a machine with radeon.bapm active.

This includes the HP T730, the DFI DT122-BE and pretty much any AMD chip post 2012-2013 (or thereabouts, someone correct me here) that relies on radeon.bapm for power management and frequency scaling.

Edit: We don't need to git clone and then patch, installing just the turbostat plugin is enough. See next post.

 

[arglebargle]

I've revised my setup scripting for this to grab only the turbostat plugin from github after installing netdata normally. You may want to fork the plugin repo to prevent unexpected/breaking future changes, I did anyway.

# install netdata with turbostat plugin ==========================
# you shouldn't be curling into bash you goon

bash <(curl -Ss https://my-netdata.io/kickstart.sh)

## taken from:
##    https://github.com/netdata/netdata/issues/3710
##
## branch/patch implementing plugin here:
##    https://github.com/tycho/netdata/commit/3167c02012973e9176c71bcd75c2b44641aaa295#diff-1e44bdc1fbe2fad255cf0b1a48175c55

wget https://raw.githubusercontent.com/tycho/netdata/implement-turbostat-module/collectors/python.d.plugin/turbostat/turbostat.chart.py -O /usr/libexec/netdata/python.d/turbostat.chart.py
chown root:netdata /usr/libexec/netdata/python.d/turbostat.chart.py

#   setup msr ACLs so turbostat plugin can function
apt install acl linux-cpupower -y
modprobe msr
setcap cap_sys_rawio=ep /usr/sbin/turbostat
groupadd --system msr
usermod -a -G msr netdata
echo 'SUBSYSTEM=="msr", GROUP="msr", MODE="0640"' > /etc/udev/rules.d/99-netdata-msr.rules
udevadm control -R
udevadm trigger
echo "msr" >> /etc/modules
systemctl restart netdata