Message 306721 - Python tracker

Message306721

Author	vstinner
Recipients	Decorater, jbfzs, ncoghlan, r.david.murray, rhettinger, serhiy.storchaka, vstinner, Александр Карпинский
Date	2017-11-22.11:09:52
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1511348992.75.0.213398074469.issue27535@psf.upfronthosting.co.za>
In-reply-to

Content
> $ ./python -m perf compare_to ref.json patch.json > Mean +- std dev: [ref] 903 ns +- 70 ns -> [patch] 1.06 us +- 0.06 us: 1.17x slower (+17%) We are talking about a difference of 157 nanoseconds. On the same laptop, a Python function call which does nothing already takes 76.6 ns +- 4.1 ns. So the overhead of my PR 4489 is the cost of two Python function calls which do nothing. Do you think that it's an inacceptable overhead?

Content

> $ ./python -m perf compare_to ref.json patch.json 
> Mean +- std dev: [ref] 903 ns +- 70 ns -> [patch] 1.06 us +- 0.06 us: 1.17x slower (+17%)

We are talking about a difference of 157 nanoseconds. On the same laptop, a Python function call which does nothing already takes 76.6 ns +- 4.1 ns. So the overhead of my PR 4489 is the cost of two Python function calls which do nothing. Do you think that it's an inacceptable overhead?

History
Date	User	Action	Args
2017-11-22 11:09:52	vstinner	set	recipients: + vstinner, rhettinger, ncoghlan, r.david.murray, serhiy.storchaka, Decorater, Александр Карпинский, jbfzs
2017-11-22 11:09:52	vstinner	set	messageid: <1511348992.75.0.213398074469.issue27535@psf.upfronthosting.co.za>
2017-11-22 11:09:52	vstinner	link	issue27535 messages
2017-11-22 11:09:52	vstinner	create