Over the past week, my website (http://itsalltech.com) has been having issues with CPU load. For some reason, at random times, WordPress will spike up in CPU usage to 100%. They aren't increased traffic times, nor do any extra scripts seem to be running. When the CPU increases to 100%, readers begin to see "connection interrupted" errors on the site.
I've already tried the basics: enabled WP Super Cache; disable all plugins; optimize database, etc.
The server is running Litespeed.
If anyone has any ideas on what to try, please let me know! Thanks!