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I am hoping to catch the eye of someone who has some insight into the mach kernel, as I can't imagine why what amounts to a key press interrupt would result in such system load.

Fairly heavily loaded M1 mac pro (think hundreds of chrome tabs). Activity monitor says it is 80% idle. I was playing a youtube video on chrome (probably not the native version), and noticed that hitting the caps lock key would cause the music to stutter. Opening up activity monitor and hitting the caps lock key repeatedly causes idle percent to drop to 40% and plenty of stuttering.

What gives? If I didn't see it myself, I would not believe it, as I don't recall ever having seen a working system behave like this.

lopass
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  • -2, really? Add a comment if you have a comment. – lopass Aug 20 '21 at 18:30
  • apparently this issue was fixed in 11.5.2, according to this https://discussions.apple.com/thread/253015514 source - maybe try updating and check if the issue persists – brxken Aug 20 '21 at 20:56
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    @brxken Thanks for the info! I really wasn't expecting that the issue would already be known and fixed. I searched duckduckgo before posting here. If you put that in an answer I would be happy to set it as the correct answer. – lopass Aug 20 '21 at 22:46
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    I would love to know what they did wrong to cause the whole OS to stutter on such a performant chip. – lopass Aug 20 '21 at 22:47
  • Sure, will do it now! It's a really odd issue but at least they addressed it I suppose, I don't even know what would cause such a thing – brxken Aug 21 '21 at 07:43

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This issue was fixed in version 11.5.2, according to this discussion on Apple's website.

An update to the latest version of macOS should do the trick!

brxken
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