McAfee Profiler captures top processes and files that are accessed by the VirusScan Enterprise (VSE) On-Access Scanner (OAS). Based on the data collected, an administrator can choose files or processes to exclude from scanning to lessen the impact on the system.
It can also be used during ODS - Run it for 5 - 10 minutes on a node that is experiencing high CPU - During high CPU, you may need to disabled McSheild, install profiler, and re-enable McSheild.
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We have tried the profiler, and it yields little results. It shows the main processes/files are already defined as low priority.
The bigger issue is with the On-Demand Scan, rather than on-access scanning. The On-Demand scan is set to run weekly and severely impacts performance. Scans can take several hours to run, and the CPU is 80% or more even if the user is trying to work. The documentation stating that the MCSHEILD process is prioritized by the OS and should back off if the user is performing tasks does not appear to work. All settings are configured for low impact/best user experience, but it is anything but.
In my last Co, we used Symantec and no one even noticed it scanning, I cannot believe McAfee consumes so much resource.