Steven D'Aprano <st...@pearwood.info> writes: > ... > Is anyone able to demonstrate a replicable performance impact due to garbage > collection?
I have had some experience with the performance impacts of garbage collection -- not completely replicable but rather frequently visible. Huge Zope instance (with around 2 GB heap usage; millions of objects); a badly designed (external) component that created thousands of temporary objects during searches. What we could observe: occasionally, our Zope got unresponsive for about 1 minute; a monitoring software typically told us that at least on of Zope's worker threads was in the external component mentioned above. The analysis finally revealed: creating and releasing thousands of short lived temporary objects frequently called for a garbage collection. The garbage collection prevented all other Python work while running -- and this caused outages in the order of a minute. -- https://mail.python.org/mailman/listinfo/python-list
