Is there a memory leak in the hello world example?

I modified the Hello World example a tiny bit to track the memory usage.

#!/usr/bin/env python3
import gc
import os
import justpy as jp
import psutil

def hello_world():
    wp = jp.WebPage()
    process = psutil.Process(os.getpid())
    gc.collect()
    wp.add(jp.Div(text=f'memory: {process.memory_info().rss:,} bytes'))
    return wp

jp.justpy(hello_world)

It looks like there is a leak since the number keeps growing when reloading the page. This already happens with JustPy 0.2.x. Explicitly setting temp=True or delete_flag=True doesn’t help.

Weirdly, jp.WebPage.instances are not growing. So, what else could hold the page or div objects? Or am I doing something completely wrong measuring the memory?

[elimintz]

Ok, will check this more. This is interesting: https://github.com/tiangolo/fastapi/issues/4649 Could be a starlette issue. The dictionaries with the webpages, websockets and components are not growing. That is clear. And when you open multiple browser tabs and then close them you see that the dict entries decrease.

[elimintz]

I’ve kept the program running for almost 25 hours now, and it looks like eventually starlette reclaims the memory. Memory usage went down from startup. I think there is no issue here to take care of.