[issue9124] Mailbox module demonstrates infeasibly slow performance

[Steve Holden]

New submission from Steve Holden <steve at holdenweb.com>:

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 disparity may be less remarkable when not profiling.

Further attachments will include a test data file (a Thunderbird mailbox taken from the same host system) and profiler outputs from the 2.5 and 3.1 runs of this program.

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components: Library (Lib)
files: test_thunderbird_mailbox.py
messages: 108978
nosy: holdenweb
priority: normal
severity: normal
stage: unit test needed
status: open
title: Mailbox module demonstrates infeasibly slow performance
type: performance
versions: Python 3.1
Added file: http://bugs.python.org/file17809/test_thunderbird_mailbox.py

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue9124>
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