I have access to the basic shell on
/bin/sh QNX Neutrino OS (6.4.1)
I want to plot a graph of CPU usage (increase or decrease) over time. The data values can be percentages. I have tried certain methods to quickly infer current CPU utilization (e.g. as described in this article here).
How do I gather a collection of these values over time? Are these values stored anywhere? I tried
/proc/stat with no luck. And I don’t seem to be able to install
sar on this OS.