# How to target Intel performance cores only in multithreading

**URL:** <https://discourse.julialang.org/t/how-to-target-intel-performance-cores-only-in-multithreading/91415>\
**Category:** Performance\
**Tags:** question, performance, multithreading\
**Created:** [December 8, 2022, 8:53am UTC](https://discourse.julialang.org/t/how-to-target-intel-performance-cores-only-in-multithreading/91415 "2022-12-08T08:53:36Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Di11on](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/di11on/32/6352_2.png) [@Di11on](https://discourse.julialang.org/u/Di11on)\
**Post date:** [October 15, 2023, 4:07pm UTC](https://discourse.julialang.org/t/how-to-target-intel-performance-cores-only-in-multithreading/91415/4 "2023-10-15T16:07:30Z")

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Hi folks,

I have a similar issue where tasks are apparrently booted to efficiency cores when not in the foreground. Some way to force use of performance cores would be great. I have posted in more detail here: [Tasks booted to efficiency cores when not in foreground or rendered on the screen](https://discourse.julialang.org/t/tasks-booted-to-efficiency-cores-when-not-in-foreground-or-rendered-on-the-screen/104980)

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