I am encountering an issue where approximatly once or twice a minute one request is facing a very high response time of 26 seconds. Its completely normal otherwise
Tried enabling the built in performance debug mode in Qa-config.php
I notice 99% of time is comsumed by Setup up where as control, view and theme is 0% relatively.
out of 99% setup time, 98% falls under PHP rest 1% under Other category.
This is resulting in very high waiting (TTFB) on the browser. - around 28 seconds...occasionly.
How can i debug this further ? and what does this Setup mean ?