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Add interface to pressure_above and pressure_rising_beyond for root host pressure monitoring #50

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danobi opened this issue Feb 14, 2019 · 0 comments

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danobi commented Feb 14, 2019

It would be nice if pressure_above and pressure_rising_beyond plugins were able to monitor root host pressure.

Interface:

root host is encoded by '/'. ie cgroup=/ as the arg for the plugins

Code changes:

In PressureAbove::run and PressureRisingBeyond::run, during cgroup wildcard resolution, if the unresolved cgroup == '/', insert '/' into the list of resolved cgroups. Then special case Fs::readMempressure and Fs::readIopressure to pass /proc/pressure/memory and /proc/pressure/io, respectively, to Fs::readRespressure
- Make sure to handle /proc/mempressure (no IO pressure for 4.11 kernels, though)

danobi added the enhancement label

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