This issue tracker has been migrated to GitHub, and is currently read-only.
For more information, see the GitHub FAQs in the Python's Developer Guide.

Author skrah
Recipients dmalcolm, eric.snow, sbrunthaler, skrah
Date 2012-05-08.20:18:42
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <>
This looks quite impressive, so sorry for immediately jumping in with
criticism. -- I've benchmarked the things I worked on, and I can't see
any speedups but some significant slowdowns. This is on 64-bit Linux
with a Core 2 Duo, both versions compiled with just `./configure && make`:


Not much change for floats and, 8-10% slowdown for _decimal!

Telco benchmark [1]:

4% slowdown.


./python -m timeit -n 10000000 -s "x = memoryview(bytearray(b'x'*10000))" "x[:100]"

17% (!) slowdown.

Did I perhaps miss some option to turn on the optimizations?

Date User Action Args
2012-05-08 20:18:42skrahsetrecipients: + skrah, dmalcolm, eric.snow, sbrunthaler
2012-05-08 20:18:42skrahsetmessageid: <>
2012-05-08 20:18:42skrahlinkissue14757 messages
2012-05-08 20:18:42skrahcreate