Message 160666 - Python tracker

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In-reply-to
Author	sbrunthaler
Recipients	dmalcolm, eric.snow, pitrou, sbrunthaler, skrah
Date	2012年05月14日.20:39:01
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1337027949.33.0.341390316494.issue14757@psf.upfronthosting.co.za>

Content
While looking at the instruction frequency traces, I noticed that INPLACE_* instructions were not quickened to optimized instruction derivatives. The submitted patch fixes this issue and correctly generates code performing the substitution. The performance improvements are noticeably better (iterative_count, nbody and threaded_count about 1.25x faster on average.) The summarized performance numbers make it easy to see where actual performance gains* are, and which results seem to be due to measurement error. *: It seems that the mako benchmark suite suffers a consistent loss. I am going to look into this.

Content

While looking at the instruction frequency traces, I noticed that INPLACE_* instructions were not quickened to optimized instruction derivatives. The submitted patch fixes this issue and correctly generates code performing the substitution. The performance improvements are noticeably better (iterative_count, nbody and threaded_count about 1.25x faster on average.)
The summarized performance numbers make it easy to see where actual performance gains* are, and which results seem to be due to measurement error.
*: It seems that the mako benchmark suite suffers a consistent loss. I am going to look into this.

History
Date	User	Action	Args
2012年05月14日 20:39:09	sbrunthaler	set	recipients: + sbrunthaler, pitrou, skrah, dmalcolm, eric.snow
2012年05月14日 20:39:09	sbrunthaler	set	messageid: <1337027949.33.0.341390316494.issue14757@psf.upfronthosting.co.za>
2012年05月14日 20:39:01	sbrunthaler	link	issue14757 messages
2012年05月14日 20:39:01	sbrunthaler	create

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