Message 398022 - Python tracker

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Author	malin
Recipients	anton.gruebel, eric.smith, malin, python-dev, serhiy.storchaka
Date	2021-07-23.00:54:21
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1627001661.74.0.533767868471.issue44711@roundup.psfhosted.org>
In-reply-to

Content
> I suppose it is a very old code I also found a few old code may have performance loss. memoryview.cast() method was add in Python 3.3. This code doesn't use memoryview.cast(), which will bring extra memory overhead when the amount of data is very large. https://github.com/python/cpython/blob/v3.10.0b4/Lib/multiprocessing/connection.py#L190-L194

> I suppose it is a very old code

I also found a few old code may have performance loss.

memoryview.cast() method was add in Python 3.3.
This code doesn't use memoryview.cast(), which will bring extra memory overhead when the amount of data is very large.
https://github.com/python/cpython/blob/v3.10.0b4/Lib/multiprocessing/connection.py#L190-L194

History
Date	User	Action	Args
2021-07-23 00:54:21	malin	set	recipients: + malin, eric.smith, python-dev, serhiy.storchaka, anton.gruebel
2021-07-23 00:54:21	malin	set	messageid: <1627001661.74.0.533767868471.issue44711@roundup.psfhosted.org>
2021-07-23 00:54:21	malin	link	issue44711 messages
2021-07-23 00:54:21	malin	create