Hey all -
it's clear that some of our users are experiencing some sort of networking
issue, and I believe that it is the age-old pmtu problem.
we're using squid as a surrogate/accelerator for photos, and users that are
far away (europe/UK) are having issues with loading some images from the squid
servers we have.
their browsers spin and spin, and finally time out. this problem goes away
when they disable their DSL firewall, so I suspect it's the Path MTU discovery
issue.
I have:
httpd_accel_no_pmtu_disc on
in squid.conf, but I hesitate to:
# echo 1 > /proc/sys/net/ipv4/ip_no_pmtu_disc
on the squids themselves, since it's production and I'm not 100% that it won't
interrupt service.
will it ? is there anything else that folks might suggest to confirm that it
is the pmtu problem ?
our squids sit behind a LB, with URL hash as it's balancing algorithm.
thanks in advance,
john
