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There is a process launched by launchd called efilogin-helper running as root, which is continuously running at high CPU load (60% to 120%)
Do you know what this process is and how I can get it under control?
There is surprisingly little information on Google.
Also, what would be a good debug method to go about solving these sorts of issues myself?
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Use Activity Monitor to Find and Quit Resource Hogging Apps Sometimes an app starts misbehaving and using too much CPU resource, causing high CPU usage on Mac. You can use the Activity Monitor tool to find such apps and then quit them to bring CPU usage under control.
High CPU usage could be the sign of malware installed on your Mac and running various scripts. It could also mean that you're trying to run too many tasks at once or you're working in apps that are too intensive for your Mac.
What is kernel_task on Mac? The kernel_task process is at the core of your Mac's operating system. Think of it as your MacBook's hypothalamus (a part of the human brain that controls body temperature). The primary function of the (kernel task) process is to regulate the temperature of your Mac's CPU.
Electronic File Interchange (EFI), also referred to as "bulk enumeration," is a process by which a health care provider or group of providers can have a particular organization (the "EFIO") apply for National Provider Identifiers (NPI) on their behalf.
Go to system preferences => Desktop & Screen Saver
Select Apple->Desktop Pictures and choose the first option.
efilogin-helper will eventually quit after about a minute and no longer be a problem.
Bizarre but true!
(Once you have confirmed that you have indeed resolved the issue you can then probably reselect your preferred wallpaper without a problem.)
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