class_docstr: Memory resident set size (RSS) in MB.
  
  RSS is the portion of memory occupied by a process that is held in main memory (RAM).
class_docstr_tok: ["Memory","resident","set","size","(","RSS",")","in","MB",".","RSS","is","the","portion","of","memory","occupied","by","a","process","that","is","held","in","main","memory","(","RAM",")","."]
code: def __init__(self, pid: int) -> None:
      self.pid = pid
      self.process: Optional[psutil.Process] = None
      self.samples = deque([])
  
imports: import threading
  from collections import deque
  from typing import TYPE_CHECKING, List, Optional
  from .aggregators import aggregate_mean
  from .asset_registry import asset_registry
  from .interfaces import Interface, Metric, MetricsMonitor
label_desc: Use image node_id 1 to create a new ProcessMemoryRSS object  with example: obj = ProcessMemoryRSS(pid)