My client getting this error out of the blue this weekend. I do maintenance on this wordpress website and it has been online for about 10 years
Resource Limit Is Reached
The website is temporarily unable to service your request as it exceeded resource limit.
Please try again later. Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/1.0.1e-fips DAV/2 mod_bwlimited/1.4 PHP/5.4.30 Server at www.clientwebsite.com Port 80
I am trying to troubleshoot it using the top -c command to monitor the activity on the server and exit(); command in my wp-config.php at various points but it's not narrowing down the scope of the issue.
If you have faced this problem at some stage and have some suggestions, I would much appreciate that.
Edit: Forgot to mention that when I am monitoring the details using `top -c', this is what I get:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
733791 vdog 20 0 345m 73m 12m R 100.0 0.5 1:02.26 /usr/local/apache/bin/httpd -k start -DSSL
741702 vdog 20 0 250m 72m 12m R 100.0 0.5 0:27.38 /usr/local/apache/bin/httpd -k start -DSSL
746203 vdog 20 0 242m 70m 16m R 51.9 0.4 0:01.56 /usr/local/apache/bin/httpd -k start -DSSL
746182 vdog 20 0 332m 56m 7800 R 45.9 0.4 0:01.38 /usr/local/apache/bin/httpd -k start -DSSL
746204 vdog 20 0 215m 41m 15m R 27.0 0.3 0:00.81 /usr/local/apache/bin/httpd -k start -DSSL
See how httpd is taking 100% CPU usage. It's not very helpful if I want to track down a file or function.
