Hi Victor, Thanks for the answer! Le 16/11/2017 à 13:48, Victor Stinner a écrit :
faulthandler has a negligible cost on performance/memory.
For -W default, I guess that your question is the cost on emitting a warning: overhead when a warning is displayed, and overhead when the warning is filtered. Right?
-Wdefault means -Wonce or -Walways? If the former, I don't expect many warnings to be emitted.
For example, on test_os, PYTHONMALLOC=debug increases the peak memory usage from 10.5 MiB to 15.8 MiB: +50%.
I see. For my use cases, this would be acceptable :-) But I think this should be documented, for example: """Currently, developer mode adds negligible CPU time overhead, but can increase memory consumption significantly if many small objects are allocated. This is subject to change in the future.""" Regards Antoine.