Extremely bad server response times and page load times
I am getting outrageously bad server response times and page load times on a digital ocean WordPress image installation. I have used this many times in the past without any issue. My load times are between 5 seconds to 60 seconds averaging around 10 seconds. Similar setups I've been getting <2 seconds in almost all cases. The first packet/first byte often shows >3 seconds.
There is absolutely nothing to explain this.
Server load is 0.00 - 0.10
There is plenty of free memory
There is plenty of free swap file space
CPU is mostly idle
There are no errors or warnings in the mysql error or the apache error log
There is nothing abnormal in the apache access log
What can possibly be causing such terrible performance?
How can I diagnose the problem?