[core] Add metrics for Task RSS HWM. #48052
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Signed-off-by: Ruiyang Wang <[email protected]>
Signed-off-by: Ruiyang Wang <[email protected]>
Signed-off-by: Ruiyang Wang <[email protected]>
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Linux exposes a process's resident memory High Watermark in /proc/self/status. We can use this to track a Ray Task's memory usage as a metrics HISTOGRAM.
How it works: On linux, on task execution, reset the HWM. on task finish, record the HWM to metrics.