Python Socket多线程服务在Windows下的内存泄漏问题排查

该问题仅在Windows系统Python 3.11.2版本中可复现，macOS下无此现象，暂未测试Linux环境。怀疑Windows平台的threading模块存在异常？由于内存占用持续增长，我添加了del语句与手动垃圾回收操作，移除后内存增长更快。已执行线程join、手动回收，线程也已正常返回，尝试过sys.exit()也无改善。这是一个用于多客户端数据采集的长期运行脚本，以下是可复现该内存问题的完整代码：

threading_mem_leak.py

import threading
import socket
import gc

def main():
    ServerSideSocket = socket.socket()
    host = ''
    port = 8083
    try:
        ServerSideSocket.bind((host, port))
    except socket.error as e:
        print(str(e))
    
    #print('Socket is listening')
    ServerSideSocket.listen(5)

    while True:
        Client, address = ServerSideSocket.accept()
        thread_unique_name = address[0] + ":" + str(address[1])
        thread = threading.Thread(group=None,target=multi_threaded_client, 
                                  name=thread_unique_name,
                                  args=(Client,), kwargs={}, daemon=None)
        #print("Connected to: " + address[0] + " : " + str(address[1]))
        thread.start()
        print("The thread for connection " + thread.getName() + " has started")
        #print(threading.enumerate())
        thread.join()
        gc.collect()


def multi_threaded_client(connection):
    data = connection.recv(2048)
    data.decode('utf-8')
    if not data:
        connection.close()
        del data
        del connection
        gc.collect()
        return
    connection.close()
    data1 = str(data)

    msglist = data1.split('|')

    var1 = msglist[0][2:]
    var2 = var1[:-3]
    var3 = msglist[1]

    # code that does stuff here #

    del connection
    del msglist
    del data
    del data1
    del var1
    del var2
    del var3

    gc.collect()
    return

if __name__ == "__main__":
    main()

client.py

import socket

while True:
    ClientSideSocket = socket.socket()
    try:
        s = socket.socket()
    except socket.error as err:
        print("Socket Error")
    bytes2send = str.encode("var1|var2|var3")
    try:
        s.connect(('127.0.0.1', 8083))
    except socket.error as err:
        print("couldn't connect")
    try:
        s.sendall(bytes2send)
    except:
        print("couldn't send data")
    s.close()

已在macOS、Linux运行该脚本（未复现内存问题），尝试过不同位置、不同代的垃圾回收，手动删除对象，也使用过_thread和threading模块，但内存仍持续失控增长。

内容的提问来源于stack exchange，提问作者Unstuckify