fix(compose): Enable measuring ContextSwitches in node-exporter #1821
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Enables measuring per cpu context switches.
example:
Note: In case of isolated CPUs, if we dont specify
--collector.perf.cpusconfig parameter, node-exporter will use the range from0toruntime.NumCPU()which does not include isolated CPUs. if this range includes isolated cpus those cpus will be considered, whereas the last few CPUs will be dropped.e,.g. if there are 20 CPUs, and cpus 2,3,12,13 are isolated, not configuring
--collector.perf.cpusmeans 0-15 will be shown, which includes the isolated cpus. which is counter intuitive.sp pls mention the complete cpu range
--collector.perf.cpus=0-19