The PdhAddCounter function obtains the computer CPU information, which takes nearly 2 minutes

勇项 0

The PdhAddCounter function obtains the computer CPU information, which takes nearly 2 minutes。

Robin Sheng-MSFT 3,855 Reputation points Microsoft Vendor

2024-09-13T01:25:06.42+00:00
Hi @勇项

Teams tag is mainly focused on the general issue of Microsoft Teams troubleshooting. According to your description, your question is not in our support scope.
The following suggestion is for your reference: It sounds like you’re using the PdhAddCounter function to retrieve CPU information, but it takes a long time. There are several possible reasons for this delay:

System Load: If your system is under heavy load, it might take longer to gather performance data.

Sampling Interval: The interval at which data is being sampled could affect the time it takes to retrieve the information.

Number of Counters: If you’re querying multiple counters, it might take more time to collect all the data.

Code Efficiency: There might be inefficiencies in the way the code is written or executed.

Please check the above reasons or refer to our official documentation.
勇项 0 Reputation points

2024-09-13T02:31:07.91+00:00

The code is written according to the official example, which should not be the main reason. Using vs2022 and windbg debugging, it is found that it is blocked in this function every time. The calling sequence is as follows:

PdhOpenQuery

PdhAddCounterW（L"\Processor Information(_Total)\% Processor Utility"）

PdhCollectQueryData

PdhGetRawCounterValue

PdhCalculateCounterFromRawValue

PdhCloseQuery

Change the process to call once every 2 seconds

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