Gauge and Counter allocate alot of memory

Hey, I've noticed that a prometheus Gauge or Counter object needs alot of memory. Is this a normal/expected behaviour?

import prometheus_client
import objsize
labels={}
labels['test']='test'

print("Memory Registry at Start: " +str(objsize.get_deep_size(prometheus_client.REGISTRY)))
print("Memory Labels as dict: "+ str(objsize.get_deep_size(labels)))
gauge = prometheus_client.Gauge("test", "", list(sorted(labels.keys())))
gauge.labels(**labels).set(10)
print("Memory Gauge object: "+ str(objsize.get_deep_size(gauge)))
print("Memory Registry after one Gauge: "+str(objsize.get_deep_size(prometheus_client.REGISTRY)))
gauge2 = prometheus_client.Gauge("test2", "")
gauge2.set(10)
print("Memory Gauge object: "+ str(objsize.get_deep_size(gauge2)))
print("Memory Registry after second Gauge: "+str(objsize.get_deep_size(prometheus_client.REGISTRY)))
counter = prometheus_client.Counter("test3", "", list(sorted(labels.keys())))
counter.labels(**labels).inc(10)
print("Memory counter object: "+str(objsize.get_deep_size(counter)))
print("Memory Registry after Counter: "+str(objsize.get_deep_size(prometheus_client.REGISTRY)))
labels={}
labels['test']='test2'
gauge.labels(**labels).set(10)
print("Memory Gauge second label: "+str(objsize.get_deep_size(gauge)))
print("Memory Registry end: "+str(objsize.get_deep_size(prometheus_client.REGISTRY)))

results in this memory usage:

Memory Registry at Start: 3988
Memory Labels as dict: 285
Memory Gauge object: 2418
Memory Registry after one Gauge: 6725
Memory Gauge object: 1051
Memory Registry after second Gauge: 7723
Memory counter object: 2108
Memory Registry after Counter: 10027
Memory Gauge second label: 3376
Memory Registry end: 10931

In this Blog Post https://www.robustperception.io/memory-usage-of-prometheus-client-libraries/ ( I know it's old) a counter needed way less memory than in my usecase. I'm using python 3.9, on windows(but i've got the same problem in a docker container) and prometheus-client 0.17.0

Bắt đầu bằng cách chạy trình tái hiện Python được cung cấp với prometheus-client 0.17.0 và Python 3.9, đo cả từng đối tượng metric riêng lẻ lẫn prometheus_client.REGISTRY. Hoàn thành có nghĩa là xác định liệu các lần cấp phát được báo cáo có nằm trong dự kiến hay xác định một hồi quy bộ nhớ cụ thể, kèm theo mục tiêu kiểm thử hoặc tài liệu tập trung nếu repository cung cấp một mục tiêu như vậy.