New issue 2590: finalizers heavily stress GC
https://bitbucket.org/pypy/pypy/issues/2590/finalizers-heavily-stress-gc
Philip Jenvey:
@alex_gaynor's script demonstrates app level `__del__`s:
```
#!python
import random
import sys
class A(object):
def __del__(self):
pass
class B(object):
pass
cls = {"A": A, "B": B}[sys.argv[1]]
while True:
# Gibberish to make sure the JIT doesn't optimize the allocation away
[cls()] * random.randint(1, 1)
```
"A" shooting RSS up to 1-2GB pretty quickly vs "B" holding steady =~ 20mb.
massif+pypy2-5.6 on "A":
https://pastebin.mozilla.org/9025519
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