wait

Waiting within a pass

time.wait waits inside a pass. Here, two readings of the CPU counters of a Linux, five seconds apart, give the CPU usage at the first pass already, where counter.rate waits for the next pass.

How to read it

• time.wait(5): five seconds, counted in the time the collector is allowed for a pass. A pass that goes beyond it stops, unreachable.
• cpu_times returns an array of two keys, read as $before['idle']: a function returns one value, and an array carries several.
• The first line of /proc/stat, cpu, sums every core, in hundredths of a second since the start: idle is idle plus iowait.

To adapt it

• A wait makes every pass longer: across many probes, counter.rate is lighter (see examples/mechanics/counter-rate).