Message 285451 - Python tracker

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In-reply-to
Author	vstinner
Recipients	methane, serhiy.storchaka, vstinner
Date	2017年01月14日.00:46:50
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1484354810.72.0.473063623424.issue29259@psf.upfronthosting.co.za>

Content
> Slower (63): > - unpickle_pure_python: 671 us +- 16 us -> 952 us +- 9 us: 1.42x slower (+42%) > ... This benchmark was run with LTO+PGO. It seems like PGO produced less efficient machine code with the patch. Maybe a missed optimization. Oh, I just realized that I announced that objects with a __call__() are faster, but it's not the case yet! Such object still gets slot_tp_call() as tp_call which isn't a fastcall!

Content

> Slower (63):
> - unpickle_pure_python: 671 us +- 16 us -> 952 us +- 9 us: 1.42x slower (+42%)
> ...
This benchmark was run with LTO+PGO. It seems like PGO produced less efficient machine code with the patch. Maybe a missed optimization.
Oh, I just realized that I announced that objects with a __call__() are faster, but it's not the case yet! Such object still gets slot_tp_call() as tp_call which isn't a fastcall!

History
Date	User	Action	Args
2017年01月14日 00:46:50	vstinner	set	recipients: + vstinner, methane, serhiy.storchaka
2017年01月14日 00:46:50	vstinner	set	messageid: <1484354810.72.0.473063623424.issue29259@psf.upfronthosting.co.za>
2017年01月14日 00:46:50	vstinner	link	issue29259 messages
2017年01月14日 00:46:50	vstinner	create

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