I'm running apache 1.x with the php 4 module on a pool of linux servers. We're finding the servers can't handle too much load even when the bandwidth usage isn't very high (about 12 Mbit max). The database isn't the bottleneck - we've made sure the queries are running very fast even under heavy web server load.
So I'm wondering if the users being on another continent has any affect. If the latency is bad, does that hold up linux/apache/php and therefore prevent each server from handling more connections/users?
