On Sat, 2011-04-23 at 20:36 +0800, jiluspo wrote:
remote servers I mean http web servers TOS.
I already know about peers in fact current squid(as of 04/24/11) TOS are
not
being marked peer(digest or icp) hit when local miss.
http://bugs.squid-cache.org/show_bug.cgi?id=3202
AFAIK squid 2 series TOS always marked zero from remote servers.
according to source code initial tos=0;
there are some patches called preserve tos miss but kernel(linux) needs
to
be patched.
does kernel really need to patch in order to pass the TOS value from
kernel
to squid?
Yes, I'm afraid it does, due to the way the networking stack works.
If you want *similar* functionality *without* patching the kernel, then
you can use the "qos_flows mark" feature, which uses the netfilter mark
value rather than the TOS value. However, marks do not apply remotely,
so this will only work to retain marks on the local machine.
therefore squid 3.2 still cant preserve TOS value from remote server to
clients.
hmn. what about the zph that requires kernel patch? would it work with
remote servers?
lastly, what about its performance degradation(req/sec and service time) if
we add this feature.
has anyone run some benchmarks if with/without mark.
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