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Interesting discussion about a Intel Skylake performance regression with the PAUSE instruction

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Bruce O'Neel-2

Interesting discussion about a Intel Skylake performance regression with the PAUSE instruction

Skylake takes PAUSE about 10 times more seriously then did previous Intel CPUs. Surprises happen..

https://aloiskraus.wordpress.com/2018/06/16/why-skylakex-cpus-are-sometimes-50-slower-how-intel-has-broken-existing-code/

marcel.taeumel

Re: Interesting discussion about a Intel Skylake performance regression with the PAUSE instruction

Hmm... does the OSVM do any spin-wait tricks to avoid context switches?

Best,

Marcel

Am 13.06.2020 09:18:26 schrieb Bruce O'Neel <[hidden email]>:

Skylake takes PAUSE about 10 times more seriously then did previous Intel CPUs. Surprises happen..

[https://aloiskraus.wordpress.com/2018/06/16/why-skylakex-cpus-are-sometimes-50-slower-how-intel-has-broken-existing-code/](https://aloiskraus.wordpress.com/2018/06/16/why-skylakex-cpus-are-sometimes-50-slower-how-intel-has-broken-existing-code/)

Skylake takes PAUSE about 10 times more seriously then did previous Intel CPUs. Surprises happen..

https://aloiskraus.wordpress.com/2018/06/16/why-skylakex-cpus-are-sometimes-50-slower-how-intel-has-broken-existing-code/