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 aggregate(self) -> dict:
      if not self.samples:
          return {}
      aggregate = aggregate_mean(self.samples)
      return {self.name: aggregate}
  
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 4 for calling the ProcessMemoryRSS obj's underlying member method code with example usage: obj.aggregate() and returns: dict, dict