Using getenv() in C++. How will effect the performance?

I am using getenv in C/C++ application. How the performance of the application will be effected by getenv().
thanks for your answers.

I have a follow up question
what is Excl user cpu cycle and Incl user cpu cycle? thanks for your help
Excl. Incl. Name
User CPU User CPU
sec. sec.
1.181 1.181 <Total>
0.761 0.761 findenv
0.170 0.300 initenv
0.130 0.130 membar_consumer
0.060 1.121 getenv
0.060 1.181 main
0. 1.181 _start

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psram wrote:
Hi Experts,
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I'm doing SEM IP. Regarding the performance, do you have some thought about this ?
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