Apache hangs frequently, needs restart to work again

Question

i am having issues tuning apache. My current mpm event configs are

<IfModule mpm_event_module>
  ServerLimit               24
  StartServers               8
  MinSpareThreads          512
  MaxSpareThreads          768
  ThreadsPerChild           64
  MaxRequestWorkers       1536
  MaxConnectionsPerChild  5000
</IfModule>

if i continuously press ctrl+r on my site for like 20 sec apache hangs, and i need to restart the server On heavy traffic hours also it happens, usually in a day more than 5 times i am facing a downtime. I am reading forums for tuning apache mpm event but not able to figure out.Can anyone please help on this issue or suggest a change or so in my current setup to achieve max performance without hanging apache. I am using an Amazon m3 large instance with ubuntu

Answer 1

There's a reason why it's called event. It just waits for that event you're not looking. Mine did the same so I switched back to prefork. Worker is even better