A fast QuadCore running CentOS 7 and Virtualmin Pro with only about 30 small websites went from very fast to a slug overnight. I have been trying to track down the error mod_fcgid: ap_pass_brigade failed in handle_request_ipc function I have searched and played around till my eyes are square and nothing is changing. It can take at least 30 to 60 seconds to load a site that was just 1 second yesterday. Rebooted Apache several times after tweaking various things but nothing is making a difference. Does anyone have any suggestions on how to figure out what the problem might be. The Apache error logs for a particular site that has submitted a complaint about speed only has these few error messages. I would expect dozens of lines of errors. So that is strange too and I am curious why the log files don't seem to be updating. To try to edit any of the virtual sites via Virtualmin takes a few minutes to get a screen to refresh. Terribly slow. The command "top" shows the CPU's are just around 0 to 1% so it is not like the server is working hard - just not responding. I just don't have a clue.
Fast Quadcore turns into a snail overnight