The Apache2 sonfig file /etc/apache2/apache2.conf holds some interesting parameters which allow performance-enhancing settings.
For example: "KeepAlive". Standard configuration may look like this:
#
# KeepAlive: Whether or not to allow persistent connections (more than
# one request per connection). Set to "Off" to deactivate.
#
KeepAlive On
#
# MaxKeepAliveRequests: The maximum number of requests to allow
# during a persistent connection. Set to 0 to allow an unlimited amount.
# We recommend you leave this number high, for maximum performance.
#
MaxKeepAliveRequests 100
#
# KeepAliveTimeout: Number of seconds to wait for the next request from the
# same client on the same connection.
#
KeepAliveTimeout 15
If you see images load slow or some don't load at all on sites with lots of images, on your server, try this setting:
KeepAlive Off
More to come soon...