Cannot allocate memory: fork: Unable to fork new process?

Question

We have our hosting in aws. Recently after moving our blog from wordpress to aws, we are experiencing noticeable delay in server response

Answer 1

I had same problem to fix it there is 2 options:

1- move from micro instances to small and this was the change that solved the problem (micro instances on amazon tend to have large cpu steal time)

2- tune the mysql database server configuration and my apache configuration to use a lot less memory.

tuning guide for a low memory situation such as this one: http://www.narga.net/optimizing-apachephpmysql-low-memory-server/ (But don't use the suggestion of MyISAM tables - horrible...)

this 2 options will make the problem much much less happening .. I am still looking for better solution to close the process that are done and kill the ones that hang in there .