[issue9124] Mailbox module demonstrates infeasibly slow performance

Lennart Regebro added the comment: 3.2 sees a small improvement when running the Steve test: Python 2.6.6: 0.0291s Python 3.1.2: 31.1s Python 3.2b2+: 28.8s This is Ubuntu 10.04 on ext3, with all Pythons compiled from source, with no configure attributes except a prefix. I wonder if the dif

[issue9124] Mailbox module demonstrates infeasibly slow performance

Raymond Hettinger added the comment: Can you confirm using the Py3.2 head? Am curious if Antoine's optimizations helped here. -- nosy: +pitrou, rhettinger ___ Python tracker ___

[issue9124] Mailbox module demonstrates infeasibly slow performance

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[issue9124] Mailbox module demonstrates infeasibly slow performance

Lennart Regebro added the comment: I can confirm on Ubuntu and with other example mailboxes. Looping through the messages and printing the subjects takes around 200-300 times longer under Python 3 than under Python 2. -- nosy: +lregebro ___ Python

[issue9124] Mailbox module demonstrates infeasibly slow performance

Changes by A.M. Kuchling : -- nosy: +akuchling ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.pytho

[issue9124] Mailbox module demonstrates infeasibly slow performance

Changes by Giampaolo Rodola' : -- nosy: +giampaolo.rodola ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: http:/

[issue9124] Mailbox module demonstrates infeasibly slow performance

Steve Holden added the comment: Thread at http://aspn.activestate.com/ASPN/Mail/Message/python-dev/3873005 refers to this issue. Posted files are already attached herewith. -- ___ Python tracker __

[issue9124] Mailbox module demonstrates infeasibly slow performance

Changes by Steve Holden : Added file: http://bugs.python.org/file17812/test3.1.out ___ Python tracker ___ ___ Python-bugs-list mailing list Uns

[issue9124] Mailbox module demonstrates infeasibly slow performance

Changes by Steve Holden : Added file: http://bugs.python.org/file17811/test2.5.out ___ Python tracker ___ ___ Python-bugs-list mailing list Uns

[issue9124] Mailbox module demonstrates infeasibly slow performance

Changes by Steve Holden : Added file: http://bugs.python.org/file17810/test.mailbox ___ Python tracker ___ ___ Python-bugs-list mailing list Un

[issue9124] Mailbox module demonstrates infeasibly slow performance

New submission from Steve Holden : The attached program completes in less than half a second under Python 2.5. Under Python 3 it takes almost three minutes on the same system. The issue appears to be heavy use of decoding, at least in a Windows system, during creation of the mailbox toc. The d