Spike On One CPU Core

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Spike On One CPU Core

Looking to see if anyone knows how to solve this. As of recently, I am getting a single-core CPU spike while running Logic. The other cores are virtually unused. It's maxing out core 8 and causing it to overload resulting in "skipping". I have tried freezing all my tracks and that isn't making one bit of difference on that core. I've run so many more demanding sessions in the past, but since updating to Big Sur, nothing but nightmares so I think that may be the culprit. The machine I'm running is: MacBook Pro (Retina, 15-inch, Mid 2015)/2.5 GHz Quad-Core Intel Core i7/16 GB 1600 MHz DDR3. I'm on OS 11.2 and running Logic Pro 10.6.1. Thanks in advance for any insight.

Posted on Mar 5, 2021 11:38 AM

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Answer 1

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EdgarRothermich

Level 5

5,004 points

Mar 8, 2021 9:04 AM in response to Scott_Wilson_7

Any chance you have an Instrument Track selected? It puts that Track automatically in "Live Mode" using all the processing power on that Channel Strip on a single core (= single CPU meter). Try to select a different Track and see if the spike goes away.

Logic cannot spread a load of all the Plugins on a single Track over multiple cores.

Here is a screenshot with an Instrument selected (that has tons of Plugins)

And here is the same situation where that Instrument Track is not selected (same amount of Plugins on that Track)

Hope that helps,

My "UserName"

Author of the best-selling book series "Graphically Enhanced Manuals" (endorsed by Apple)

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Answer 2

Mar 13, 2021 8:56 AM in response to Scott_Wilson_7

Ended up finding the culprit. It was the ChromaVerb plug-in on my Stereo Out. Once I removed that it cut the core-8 processing down by about 50%. I knew that plug-in required some juice, but wow.

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Answer 3

Mar 7, 2021 7:12 AM in response to EdgarRothermich

No instrument track selected. I did find that I had had Input monitoring still on some Hidden Tracks. Turning that off improved it a bit, however that one thread is still spiking, just less frequently now.

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Spike On One CPU Core

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