4/22/2023 0 Comments Mac os cpu usageThe scanning process should take only a few minutes, but on some systems it appears to be getting stuck. In addition, the update installs and runs MRT (likely standing for "Malware Removal Tool"), which will scan your system for known malware and notify you that the malware has been removed if it has been located. When you install the update, it replaces the XProtect definitions file and installs the XProtect updater application along with the updater's scheduler file that has it run on a daily basis (unless you turn this feature off in the new setting in the Security system preferences). Upon checking Activity Monitor, a process called "MRT" is using a large percentage of CPU, and even with forcing the process to quit it will reappear and continue to use the CPU.Īpple's security update includes three components: an updated definitions file for XProtect, an automatic updater for XProtect, and a temporary system scanner called "MRT." Following the wave of scam "MacDefender" software and its variants, Apple recently released a security update for Mac OS X 10.6 that updates the built-in "XProtect" feature to identify these threats however, after installing the update, a number of people are finding the system is stuck with high CPU usage, resulting in the system being bogged down and running slowly.
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