On Jan 3, 2005, at 8:28 AM, Domas Mituzas wrote:
I've written an ICP responder, that would help a
lot in squid-apache
web server cluster balancing. It does delay requests to frontend
caches at high loads, sends immediate responses at idle cpu capacity
and might be remotely turned on or off at emergencies. Right now due
to Linux kernel scheduler granularity it works at 0/10/20/..ms steps,
therefore it does not achieve my design goals (milisecond-level
delays), but still, it works with superior functionality, and does not
need hacked squids installed on apaches.
Cool... I tried it out for a few minutes while we were playing with
slow things. Haven't really got comprehensive stats; I think the
capping of high load is more or less working, but at the low-end load
we still have a great deal of unevenness as the minimum network delay
results in bad distribution.
Also there was a bit where it kind of freaked out, but this may have
been a restart or something.
-- brion vibber (brion @
pobox.com)