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.


take a look at the log files (/var/log/apache2/*error.log by default, location may be overwrite by the ErrorLog directive)

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