add process sampler #282
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add process sampler #282
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Adds a sampler which can monitor rusage for a specific process.
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Problem
We want to be able to use Rezolus to get basic stats about process
CPU and memory utilization.
Solution
Adds a process sampler which uses a PID file and reads from procfs
to get stats about a process.
Result
We can now monitor a process to get high-resolution cpu and
memory usage stats.