Date: Fri, 29 Feb 2008 14:28:04 -0800 (PST) From: Juri Mianovich <juri_mian@yahoo.com> To: freebsd-net@freebsd.org Subject: simple, adaptive bandwidth throttling with ipfw/dummynet ? Message-ID: <754299.92112.qm@web45601.mail.sp1.yahoo.com>
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I do simple limiting of bandwidth with dummynet. Very
simple, in fact - one inbound rule and one outbound
rule.
Easy.
Sometimes people hit the limit I have in place, but if
they only hit it on a short transfer, I don't care -
they can live with being throttled for 30 mins.
BUT, sometimes people have a big massive transfer that
maxes out the limit for a long time. Not only do they
get throttled too hard, but then other users are
throttled as well - very hard.
So, I am wondering if anybody knows of a simple way to
do something like:
"after 30 minutes of maxed dummynet rule, add X mbps
to the rule for every active TCP session, with a max
ceiling of Y mbps"
and:
"after 30 minutes of less than max usage, subtract X
mbps from the rule every Y minutes, with a minimum
floor of Z"
Make sense ?
Is there an easy way to do this ?
If I wanted to do this myself with a shell script, is
there any way to test a particular dummynet rule for
its current "fill rate" - OR - a simple way to test if
a particular dummynet rule is currently in enforcement
?
Thanks.
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