Request-IIS configuration towards better performance of the sites

Question

Request-IIS configuration towards better performance of the sites

Tamil selvan M 85

I have deployed my Application in Vm server 2022 and application running on IIS server with Windows server VM configuration of Standard D8as v5 (8 vcpus, 32 GiB memory). Under normal circumstances, the application functions smoothly. However, during peak hours, when the user load exceeds 200, the application experiences a slowdown. Even though the application encounters slowness during peak times, the server's performance metrics indicate that the CPU usage remains at a low 9-10%, and memory usage is only 11-12% The performance metrics indicate that the server is not the source of the slowdown during peak times. give me a solution for this? and Its working on the production environment, we do not change the option of default access of IIS server. what is the issue and why its happening give me a solution?

Anonymous

2024-01-12T06:39:06.2933333+00:00

Hi @tamil selvan, From your description, it seems that there is a long http response issue, not other performance issues such as CPU spikes. You can use DebugDiag Collections to capture the dumps, then check it what happened. When setting the rules, you can set them according to your actual scene, and the following ones are for reference only.

Then you can let your Development Team to check it by using DebugDiag Analysis. If you don't know how to analyze the dump files, it is recommended to create a support ticket and let professional support help you. Best Regards Jason
kobulloc-MSFT 26,811 Reputation points Microsoft Employee Moderator

2024-01-18T07:54:24.3933333+00:00

Hello, @tamil selvan ! If an answer has been helpful, please consider accepting the answer to help increase visibility of this question for other members of the Microsoft Q&A community. If not, please let us know what is still needed in the comments so the question can be answered. Thank you for helping to improve Microsoft Q&A!

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Anonymous

2024-01-12T06:39:06.2933333+00:00

Hi @tamil selvan, From your description, it seems that there is a long http response issue, not other performance issues such as CPU spikes. You can use DebugDiag Collections to capture the dumps, then check it what happened. When setting the rules, you can set them according to your actual scene, and the following ones are for reference only.

Then you can let your Development Team to check it by using DebugDiag Analysis. If you don't know how to analyze the dump files, it is recommended to create a support ticket and let professional support help you. Best Regards Jason
kobulloc-MSFT 26,811 Reputation points Microsoft Employee Moderator

2024-01-18T07:54:24.3933333+00:00

Hello, @tamil selvan ! If an answer has been helpful, please consider accepting the answer to help increase visibility of this question for other members of the Microsoft Q&A community. If not, please let us know what is still needed in the comments so the question can be answered. Thank you for helping to improve Microsoft Q&A!

Answer 1

No solution can be provided until the actual cause of slowness is found. In general, slowness can often cause by poorly written code (as multithreading programming isn't trivial), especially when you observed CPU and memory usage were normal. You might get started from IIS log files to find the actual symptoms (time interval of slowness, response time distribution over URLs, and so on). Tools like LogParser are often used, https://learn.microsoft.com/en-us/troubleshoot/developer/webapps/iis/health-diagnostic-performance/troubleshoot-iis-perf-issues-or-app-errors If you need further assistance, try to hire an experienced consultant or open a support case via https://support.microsoft.com.

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Request-IIS configuration towards better performance of the sites

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