Uvicorn TCP memory leak

Dockerfile.issue

FROM python:3.8

WORKDIR /app

COPY requirements.txt /app/requirements.txt
RUN pip install -r /app/requirements.txt 

RUN pip install "uvicorn[standard]"

COPY main.py /app

EXPOSE 8080

ENTRYPOINT ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8080"]

Dockerfile.noissue

FROM python:3.8

WORKDIR /app

COPY requirements.txt /app/requirements.txt
RUN pip install -r /app/requirements.txt 

RUN pip install "uvicorn[standard]==0.13.4"

COPY main.py /app

EXPOSE 8080

ENTRYPOINT ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8080"]

main.py

import gc
import asyncio
import logging
from fastapi import FastAPI
from memory_profiler import memory_usage

FORMAT = '%(asctime)-15s %(message)s'
logging.basicConfig(format=FORMAT)

logger = logging.getLogger("test.mem")
logger.setLevel(logging.INFO)

app = FastAPI(
    title="MemTest",
    description="MemTest",
    version="0.0.1",
)


async def print_mem():
    while True:
        await asyncio.sleep(2)
        mem_usage = memory_usage(-1, interval=0.2, timeout=1)
        logger.info(mem_usage)
        logger.info(f"Number of unreachable objects {gc.collect()}")


@app.on_event("startup")
async def on_startup():
    asyncio.gather(print_mem())

requirements.txt

fastapi==0.70.0
memory_profiler