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High Cpu Usage on-access-scan

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Hello we have an issue with real-time scanner which use high cpu, can you tell us what can we do? see picture thanks.

windows 10 1909

ENS ver 10.7.0

Agent ver.5.6.3

epo ver. 5.10

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Former Member
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Message 7 of 8

Re: High Cpu Usage on-access-scan

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Hi @Georgiancard 

What you're seeing in Task Manager is a feature introduced with Windows 10 version 1809 intended to help users determine which applications are likely to be using more power, based on the application's CPU and GPU load over time. It'll be flagging for our process because it's probably constantly using 23% CPU - which is the highest process running on your system.

Nonetheless 23% CPU usage isn't overly high. And I would ask you to review the earlier mentioned points to get the CPU usage down. If you need help establishing what we are scanning then as a first step you can use the Profiler Tool (KB69683) or you please feel free to reach out to our Technical Support Team and they can assist you with the investigation.

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Former Member
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Message 2 of 8

Re: High Cpu Usage on-access-scan

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Hi @Georgiancard 

25% CPU usage by OAS wouldn't particularly be considered high. However I'm sure there are improvements that can be made to improve the situation and reduce the impact. 

A few things to check:

1. Make sure there is no ODS scan running. ODS scan tasks will cause higher levels of CPU. 

2. Does the issue disappear if you disable the On Access Scanner feature? If yes, then it's likely that the issue can be resolved by configuration.

Here are some best practices and items to look into: https://kc.mcafee.com/corporate/index?page=content&id=KB88205

If none of these help, but the issue is resolved by disabling the OAS feature, then what is likely happening, is that an application or system activity is causing a lot of read/ write activities. All of which we need to scan - unless excluded. If you are unable to identify which application or activity is causing this, it may be best to reach out to our Technical Support Team to help you identify this however it's important to note that we can't give recommendations on items to exclude. Recommendations need to come from each vendor themselves. We can however tell you what is being scanned to help point you in the right direction.

rfranci
McAfee Employee
McAfee Employee
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Message 3 of 8

Re: High Cpu Usage on-access-scan

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Hi @Georgiancard ,

 

From the screen shot that you have attached, i could see that DLP and scanner service are on top of CPU utilization.

For this we recommend some exclusions for DLP on ENS, Kindly follow the instructions specified in the below KB article for adding the exclusions: 

https://kc.mcafee.com/corporate/index?page=content&id=KB68520

 

Hope that helps!

Re: High Cpu Usage on-access-scan

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Hello, can anyone explain us why is this problem so often? high power usage of CPU McAfee scanner service and other McAfee products. what can we check?

Former Member
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Message 5 of 8

Re: High Cpu Usage on-access-scan

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HI @Georgiancard 

I would like to refer you to my first comment on this post. Per your screenshot the scanner is using 23% CPU which to be honest isn't really high.

I referred to a KB which advises how to improve performance and there are a few things listed that you can check. Generally speaking high cpu occurs because the system/ an application/ ... is performing a lot of read/ write activities which require monitoring by us unless they are excluded from scanning. The more the system is doing > the more we need to scan > the higher the CPU usage.

Re: High Cpu Usage on-access-scan

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hi, can you look at the last tab? it shows very high and high CPU usage
Former Member
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Message 7 of 8

Re: High Cpu Usage on-access-scan

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Hi @Georgiancard 

What you're seeing in Task Manager is a feature introduced with Windows 10 version 1809 intended to help users determine which applications are likely to be using more power, based on the application's CPU and GPU load over time. It'll be flagging for our process because it's probably constantly using 23% CPU - which is the highest process running on your system.

Nonetheless 23% CPU usage isn't overly high. And I would ask you to review the earlier mentioned points to get the CPU usage down. If you need help establishing what we are scanning then as a first step you can use the Profiler Tool (KB69683) or you please feel free to reach out to our Technical Support Team and they can assist you with the investigation.

alex1759
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Message 8 of 8

Re: High Cpu Usage on-access-scan

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Somewhere within the agent, there's likely a schedule for this. Adjust it so it's no happening when you're typically going to be using the system, but realize, if the system is turned off or asleep when it runs, it's likely going to try and run the next time the system boots up.
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