How to check on CentOS 7.7 which process take 1 min because of slow page loading (TTFB 1 min)

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I’m using CentOS version 7.7.
A few days ago my frontend page (not whole website) TTFB is exactly 1 min.
How I can check which process causes that?
I’m using PHP 7.3 php-fpm ON

Any way to check which process cause waiting for the first byte 60 seconds?

https://i.stack.imgur.com/sYGze.png

This error I got a few times a day … so page availability is around 88% … my frontpage is down (TTFB 1min) for a 12% . Please help, its very urgent for me

Answer

Attribution
Source : Link , Question Author : Aleks Per , Answer Author : Community

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