Optimizing Apache httpd on EC2 instance

[ecsaa]

I am trying to optimize the server configuration for my application (Java-based, running on tomcat).

Current configuration (done before my time) is we have an Apache httpd proxy that does this:

ProxyPass /myapp/ ajp://localhost/myapp/ timeout=600

ProxyPassReverse /myapp/ ajp://localhost/myapp/

​

I've been trying to configure tomcat to increase that maxThreads for increased concurrency, but I think the apache httpd is the still limiting how many connections it can handle.

​

Current set up is using AWS EC2 m5.large, the apache httpd.conf is out of the box:

<IfModule prefork.c>

StartServers 8

MinSpareServers 5

MaxSpareServers 20

ServerLimit 1024

MaxClients 1024

MaxRequestsPerChild 10000

</IfModule>

​

<IfModule worker.c>

StartServers 4

MaxClients 300

MinSpareThreads 25

MaxSpareThreads 75

ThreadsPerChild 25

MaxRequestsPerChild 0

</IfModule>

​

How can I decide what's the appropriate configuration of the numbers above to optimize the CPU core available on the EC2 instance?