How to fix ‘Kernel_task High CPU usage’ issue on Mac

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Are you want to know how to fix ‘Kernel_task High CPU usage’ issue on Mac? Does the fan on your Mac keep turning and sound like a space shuttle? We are aware of the issue at hand. We also understand how to fix it. We like Macs because they are reliable and don’t need any hardware or software maintenance for years on end. All apps, even macOS itself, automatically update because of the App Store. FileVault encrypts your data, the firewall stops connections from people who aren’t supposed to be there, and sandboxing keeps third-party apps from accessing important system data.

macOS is built around the kernel_task process, which does many of the low-level tasks that make the computer work. One of its main jobs is to keep your Mac from getting too hot. If kernel_task sees that other CPU-intensive tasks are taking up a lot of your Mac’s resources, it will use them all itself. This will stop the other tasks from using them all, which could cause your Mac to get too hot. It’s possible that the kernel_task process is to blame if forcing all open apps to close didn’t help. You will learn how to fix ‘Kernel_task High CPU usage’ issue on Mac in this article.

What is kernel_task?

On a Mac, kernel_task is an important part of macOS that controls things like CPU, memory, and disk access. As a link between the hardware and software, it makes sure that everything works smoothly and quickly. Kernel_task is kind of like a traffic cop; it sends resources to where they are most needed. As an example, it controls the CPU’s temperature by managing its workload and setting priorities for tasks to make sure the system runs at its best. But if kernel_task consistently uses a lot of your CPU, it could mean that your system is running slowly because of old software or not enough air flow.

Causes of the ‘Kernel_task High CPU Usage’ Issue

1. System Overload: One of the primary reasons for kernel_task to use a high amount of CPU resources is when the system is under heavy load. This can happen when running resource-intensive applications or having too many applications open simultaneously.
2. Overheating: High CPU usage can also be caused by overheating. When the system temperature exceeds safe levels, kernel_task may try to reduce CPU usage to cool down the system, causing the appearance of high CPU usage.
3. Faulty Hardware: Sometimes, hardware issues like a malfunctioning fan, power supply, or even a failing CPU can lead to the kernel_task process using excessive CPU resources.
4. Outdated Software: Running outdated or incompatible software can lead to conflicts with the macOS kernel, resulting in high CPU usage by kernel_task. Ensure that all your software, including drivers and applications, is up to date.
5. System Software Issues: Bugs or glitches in the macOS can also trigger high CPU usage by kernel_task. Keeping your operating system updated with the latest patches and updates can help mitigate this.
6. Third-Party KEXTs: Kernel Extensions (KEXTs) developed by third-party software can sometimes cause issues with kernel_task if they are poorly coded or not compatible with your system. Removing or updating problematic KEXTs can resolve this issue.

How to fix ‘Kernel_task High CPU usage’ issue on Mac

Check for Software Updates

1. Click on the Apple menu () in the top-left corner of your screen.
2. Select ‘About This Mac.’
3. Click on the ‘Software Update’ button.
4. If updates are available, click ‘Update Now‘ and follow the on-screen instructions.

Identify the Culprit

1. Open ‘Activity Monitor’ by searching for it using Spotlight (Command + Space, then type ‘Activity Monitor’ and press Enter).
2. In Activity Monitor, click on the ‘CPU‘ tab to sort processes by CPU usage.
3. Look for processes with unusually high CPU usage. If ‘kernel_task’ is at the top, continue with the following steps.

Check for Overheating

1. Shut down your Mac.
2. Wait a few minutes to let it cool down.
3. Ensure your Mac is on a flat, well-ventilated surface.
4. Turn it back on and monitor its temperature using apps like iStat Menus or Intel Power Gadget.

Disable Non-Essential Login Items

1. Go to ‘System Preferences’ > ‘Users & Groups.‘
2. Select your user account.
3. Click the ‘Login Items‘ tab.
4. Remove or disable any unnecessary startup applications.

Check for Software Conflicts

1. Uninstall recently installed or suspicious third-party applications.
2. Create a new user account and check if the issue persists there. If not, the problem may be user-specific.

Backup and Reinstall macOS

1. Backup your important files using Time Machine or another backup method.
2. Create a bootable macOS installer on a USB drive.
3. Restart your Mac and boot from the USB drive.
4. Erase your Mac’s hard drive using Disk Utility.
5. Install macOS from the bootable USB drive.

Conclusion

It’s not fun when your Mac takes a long time to work, and it’s even worse when you can’t figure out why. Even after closing all of your programs, your MacBook might still feel like it’s moving slowly. This could mean that the dreaded “kernel_task” is using a lot of CPU power. A group of low-level tasks on your Mac are called kernel_task. These tasks make it possible for the rest of your computer to work. This means it might be hard to figure out who did it. We’ve seen this happen a lot, so here are some ideas to help you fix it.

Questions and Answers