I have a general WP troubleshooting question. First off - we are new to WP and are just now trying to migrate current sites to the WP platform.
We have a shared web server we set up. If you are familiar with Amazon's AWS, it is a Red Hat 6.5 EC2 instance. The server had 3 sites on it already and was running at around 20% CPU.
Once we took this new site out of beta on Friday and set it live for the world the CPU tacked out at 100%. We tried troubleshooting but were not getting very far. So in order to make it through the weekend we upgraded the EC2 instance from a m1.large to a m1.xlarge. The CPU then dropped to between 40% and 50%. We were satisfied that we could make it through the weekend and would continue troubleshooting today.
Over the weekend I randomly checked the CPU. It made its way back up to 80%-85% as of yesterday. Now looking again this morning I see that some time between yesterday evening and this morning the site is now tacking the processor at 100% again.
Can you suggest some methods/plugins/places to look in order to determine what with this site is causing it to kill the server? There is no way that a server of this size should be taken down by one site like this. We know there is something desperately wrong - but are just unsure where to look. The site did not show any signs of trouble while in limited access beta so leaving it live while troubleshooting is necessary to know when any changes actually affect the server. So any methods that wreck the way the site looks for the users the least would be best Thank you for any assistance you can offer!!