On Mon, Aug 06, 2007, Ming-Ching Tiew wrote: > > Anyone has experience peculiar things with Squid and PPPoE ? > > I have a setup where Squid is doing transparent tproxy for PPPoE > and non-PPPoE users, however the experience is that when > squid is serving the cached files for PPPoE users, it's slower > than a commercial product. > > Is it possible that this is a MTU problem ? Does it make sense > to change the ethernet interfaces to have a smaller MTU > ( matching with a typical PPPoE config ) ? Or do I have to > add iptables rule to clamp-mss-to-pmtu ? > > I have already got > > httpd_accel_no_pmtu_disc off > > as the default value. You're going to have to be slightly more detailed than that. "slower than a commercial product" when "serving cached files" could mean anything. Try modifying the routing table to always present a lower MTU, check to see what the path between the Squid and the PPPoE client, do some transfer tests between a PPPoE client and the Squid server itself (eg via thttpd on the squid server); try to nail down what exactly constitutes it being "not fast". Adrian
