Date: Sun, 6 Oct 2002 11:36:20 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: "Maarten de Vries" <mdv@unsavoury.net> Cc: <freebsd-stable@FreeBSD.ORG> Subject: Re: Traffic shaping Message-ID: <200210061836.g96IaKYP043201@apollo.backplane.com> References: <200210050655.g956t3Mp091313@lurza.secnetix.de> <006501c26d35$f6904720$1001a8c0@jennie>
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For connections whos primary data path is outgoing (e.g. like a web
server), try turning on the experimental bandwidth delay product
code (requires a recent -stable kernel).
sysctl -w net.inet.tcp.inflight_enable=1
sysctl -w net.inet.tcp.inflight_debug=0
This will prevent your local DSL modem's queues from building up
a large backlog of packets.
-Matt
:Hi all,
:
:I could do with some hints regarding traffic shaping. My homenetwork is
:hooked up to an assymetrical (1536/256) ADSL line, using a FreeBSD 4.6
:system which provides the usual NAT/Gateway/Firewall services. I'm using
:dummynet to control the amount of bandwidth used by certain hosts on the
:network, which all works fine. However, I still suffer from latency when the
:maximum up- and/or downstream of the line is being utilized. If I understand
:it well, this happens because the buffer in the ADSL modem fills up
:completely at those occasions. Is there anyway to prevent this from
:happening?
:
:Ta,
:--
:Maarten de Vries
:http://unsavoury.net/
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