what about simple php script like helloworld or phpinfo?
I did not have a chance to test this, it's a busy server and uptime is really important. This issue did not happen right after I switch to LS so if I want test this I have to wait for another downtime(which I try my best to avoid.)
this issue recently came up but it was ok before?
Just came up. I have been using LS for a long time, and before the issue arise, there is no upgrade made to LS or CL kernel/lve.
See if the below helps
My EP limit is 40 and nPROC limit is 80, while my PHP suEXEC max conn is 20, smaller than both.
I waited a few days until I made this reply, server is running Apache these days, there is no issue during this time(of course load is higher).