Apache tuning

Prefork tuning parameters:

Say,

Resident Memory Size = 8 MB (determined process memory when load testing)

Available Memory to use by Apache = 6 GB = 6114 B

Calculate:

MaxClients = 6114 MB / 8 MB = 768

ServerLimit = MaxClients

ServerLimit 768

StartServers 512

MinSpareServers 50

MaxSpareServers 100

MaxClients 768

MaxRequestsPerChild 10000

KeepAlive On

KeepAliveTimeout 2

MaxKeepAliveRequests 100

Timeout 20

Adjust slow ramp up time on LTM to avoid flooding on webservers

Include http-default.conf

UseCanonicalName On

LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" \"%{X-Forwarded-For}i\"" custom-interval