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Author vstinner
Recipients Mark.Shannon, jdemeyer, josh.r, malin, methane, vstinner
Date 2019-08-13.13:40:18
SpamBayes Score -1.0
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Message-id <1565703618.7.0.51675947821.issue37774@roundup.psfhosted.org>
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Content 
Another example to explain my concern. In the Linux kernel, list macros used to prefetch next items: “(...) So the conclusion is: prefetches are absolutely toxic, even if the NULL ones are excluded.”

https://lwn.net/Articles/444336/

The lesson is that we should not let developers tune the compiler: let the CPU do that for you :-) For example, CPUs have evolved heuristics to prefetch data for you.
History
Date User Action Args
2019-08-13 13:40:18vstinnersetrecipients: + vstinner, methane, Mark.Shannon, jdemeyer, josh.r, malin
2019-08-13 13:40:18vstinnersetmessageid: <1565703618.7.0.51675947821.issue37774@roundup.psfhosted.org>
2019-08-13 13:40:18vstinnerlinkissue37774 messages
2019-08-13 13:40:18vstinnercreate