Do you know the tracemalloc module? Did you try it? It works on a regular Python (compiled in debug mode).
I would be curious to know if tracemalloc also allows you to track the memory leak.
sys.getobjects() is just a list of objects. Do you have a tool written on top of it to track memory leaks? If yes, how?
Le mar. 16 avr. 2019 à 00:28, Michael Sullivan firstname.lastname@example.org a écrit :
The main question is if anyone ever used Py_TRACE_REFS? Does someone use sys.getobjects() or PYTHONDUMPREFS environment variable?
I used sys.getobjects() today to track down a memory leak in the mypyc-compiled version of mypy.
We were leaking memory badly but no sign of the leak was showing up in mypy's gc.get_objects() based profiler. Using a debug build and switching to sys.getobjects() showed that we were badly leaking int objects. A quick inspection of the values in question (large and random looking) suggested we were leaking hash values, and that quickly pointed me to https://github.com/mypyc/mypyc/pull/562.
I don't have any strong feelings about whether to keep it in the "default" debug build, though. I was using a debug build that I built myself with every debug feature that seemed potentially useful.
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