IPFW, KERNEL, sysctl: has no effect changing DUMMYNET.io_fast
KES
kes-kes at yandex.ru
Wed Apr 15 18:49:31 UTC 2009
Hi, Freebsd-questions.
This change
sysctl net.inet.ip.dummynet.io_fast=1
has no effect for packet flow, bug man says:
Fast mode allows certain packets to bypass dummynet scheduler if packet flow does not exceed pipe's bandwidth
flow does not exceed pipe limit, but packet flow latency is affected
ipfw pipe 1 config bw 64kbit/s
ipfw add 1 pipe 1 all from any to any
No any trafic except ping:
ping some.lan.machine
with rules above ping is about 8ms, without them <1ms
Does I understand corrent "Fast mode"
when I ping I do flow less than 64Kbit/s so packet must bypass
scheduler and must have latency <1ms?
--
С уважением,
KES mailto:kes-kes at yandex.ru
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