Message 159072 - Python tracker

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Author	pitrou
Recipients	brian.curtin, kristjan.jonsson, loewis, pitrou, python-dev, sbt, tim.golden
Date	2012-04-23.20:21:27
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1335212487.97.0.195419742459.issue11618@psf.upfronthosting.co.za>
In-reply-to

Content
> Is a 60% performance increase for the common case of acquiring an > uncontested lock worth doing? Yes, I agree it is. However, the Vista-specific path seems uninteresting, if it's really 2% faster. > our console profilers were alarmed at all the kernel transitions caused > by the GIL being ticked.... That's the old GIL. The new GIL uses a fixed timeout with a condition variable.

> Is a 60% performance increase for the common case of acquiring an
> uncontested lock worth doing?

Yes, I agree it is. However, the Vista-specific path seems uninteresting, if it's really 2% faster.

> our console profilers were alarmed at all the kernel transitions caused 
> by the GIL being ticked....

That's the old GIL. The new GIL uses a fixed timeout with a condition variable.

History
Date	User	Action	Args
2012-04-23 20:21:28	pitrou	set	recipients: + pitrou, loewis, kristjan.jonsson, tim.golden, brian.curtin, python-dev, sbt
2012-04-23 20:21:27	pitrou	set	messageid: <1335212487.97.0.195419742459.issue11618@psf.upfronthosting.co.za>
2012-04-23 20:21:27	pitrou	link	issue11618 messages
2012-04-23 20:21:27	pitrou	create