IIS worker process high cpu

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Posted on by axdynasty

Hello,

We are running CRM 2016 with 8Virtual CPUs and 32GB RAM, memory utilization is fine but very often we are having high CPU Utlization peaking upto 100%. Our users are complaining too often and i would like to know your valuable suggestions to reduce this.

Running Windows Server 2016

Around 25 Users

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Kokulan 18,054 on at

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RE: IIS worker process high cpu

Hi

I would first check the process that is uses CPU 100%. On IIS, if you go to worker processes, you should be able to see which process pushes the CPU utilisation to this high.

Once you confirmed that the 100% utilisation is caused by CRM AppPool worker process, you could carry on with investigating this further.

As described in the link below, the following are major causes for a worker process to behave like this

High error rates within your ASP.NET web application

Increase in web traffic causing high CPU

Problems with application dependencies

Garbage collection

Requests getting blocked or hung somewhere in the ASP.NET pipeline

Inefficient .NET code that needs to be optimised

Please follow the link below and see if you can identify and recti

https://stackify.com/w3wp-high-cpu-usage/

If you cannot troubleshoot this with built in Windows tools, you could try the free Stackify or similar tool to identify which URL or what type of requests causing this.

https://stackify.com/prefix/

Its also worth checking IIS HTTP logs and enabling Failed Requests Tracing would definitely help as well

https://docs.microsoft.com/en-us/iis/troubleshoot/using-failed-request-tracing/troubleshooting-failed-requests-using-tracing-in-iis

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axdynasty 62 on at

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RE: IIS worker process high cpu

We have Kingsway integration services running on a different server. I have limited the CPU for application pool to 75% and throttle. I will update you all soon. Sorry for the late reply though.

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PranavShroti 4,510 on at

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RE: IIS worker process high cpu

Check below :

1. Is this a single server deployment, than is it being shared by other applications ? like other asp.net apps, DB etc

2. Is there any background processes like batch jobs etc runs in CRM (when CPU utilization goes high)

3. check if this is enabled : Power plan of the machine to “High Performance: support.microsoft.com/.../slow-performance-on-windows-server-when-using-the-balanced-power-plan

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gdas 50,091 Moderator on at

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RE: IIS worker process high cpu

Hi.

What kind of customization in CRM you did?

This might be the cause for your customization so try to find out after which page or which action memory got increasing , open the memory utilization window and the CRM in parallel and do the regular activity follow which action taking time .

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