PHP-FPM and concurrency

[Kiril Angov]

Hello,

I have a strange problem maybe not related to nginx but it could very well be. So I make a long (time consuming) request to a PHP page. Where that request is in progress, let's say 1 minute, with the SAME browser I cannot open another page from that same "server {}" block. If within that minute I use ANOTHER browser to open a page from that "server {}" block, it does open just fine. Which rules any database locks, for example. I have tested this with at least one more person, so it is not a browser configuration problem. Also, I can open static files with the same browser which means that it is something related to the PHP requests only.

What can I try and where to look for the problem?

Thanks you!
Kiril