Hi Mr. Henrik, 2010/2/23 Henrik Nordström <henrik@xxxxxxxxxxxxxxxxxxx>: >> We then used iptables to direct each network to a different >> http_port (all with tproxy), and the time improved on the http_ports >> that have fewer users... > > Check your /var/log/messages... most people running into problems like > yours is running out of iptables conntrack entries /var/log/messages is clean. No conntrack problem. We had these in the very early stages of the squid deployment, but changing the max solved it: echo "524288" > /proc/sys/net/ipv4/netfilter/ip_conntrack_max I'll try 3.HEAD code like mr. Jeffries suggested to see if it helps. Any other thoughts beside that? Thank you in advance, Felipe Damasio