Message 263894 - Python tracker

Message263894

Author	serhiy.storchaka
Recipients	brett.cannon, eric.snow, larry, ncoghlan, random832, rhettinger, serhiy.storchaka, vstinner, xiang.zhang
Date	2016-04-21.08:00:22
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1461225622.57.0.507039436152.issue26811@psf.upfronthosting.co.za>
In-reply-to

Content
References: Issue23910 -- added original optimization (661cdbd617b8). Issue24276 -- it was significant rewritten (5dbf3d932a59). My suggestion in msg263886 to revert the optimization was related to the original code. Now, after reminding the background, I think it is worth to keep the optimization and try to fix the code. Making the cached tuple to save None adds additional complexity and overhead (about 5%). Here is a patch that uses different trick. The size of saved tuple is set to 0.

Content

References:

Issue23910 -- added original optimization (661cdbd617b8).
Issue24276 -- it was significant rewritten (5dbf3d932a59).

My suggestion in msg263886 to revert the optimization was related to the original code. Now, after reminding the background, I think it is worth to keep the optimization and try to fix the code.

Making the cached tuple to save None adds additional complexity and overhead (about 5%). Here is a patch that uses different trick. The size of saved tuple is set to 0.

History
Date	User	Action	Args
2016-04-21 08:00:22	serhiy.storchaka	set	recipients: + serhiy.storchaka, brett.cannon, rhettinger, ncoghlan, vstinner, larry, eric.snow, random832, xiang.zhang
2016-04-21 08:00:22	serhiy.storchaka	set	messageid: <1461225622.57.0.507039436152.issue26811@psf.upfronthosting.co.za>
2016-04-21 08:00:22	serhiy.storchaka	link	issue26811 messages
2016-04-21 08:00:22	serhiy.storchaka	create