Hi,
I'm really new to traffic shaping and try to implement the wshaper.htb
script.
I have a linux box that serves as vdr, mldonkey, samba, apache and
mailserver (imap), connected to my LAN with 100mbit. I'm connected to
the inet via adsl with a hardware router/firewall, got 384k downlink 64k
uplink. When I have mldonkey running, imap (via Outlook) gets *very*
slow (mails with attachments take 5-10mins to show), and even ssh to the
linux-box gets sluggish. I tried to put imap into the wshaper script,
did I do something wrong?
Here's the script:
----------------snip-------------------------
#!/bin/bash
# Wonder Shaper
# please read the README before filling out these values
#
# Set the following values to somewhat less than your actual download
# and uplink speed. In kilobits. Also set the device that is to be
shaped.
DOWNLINK=300
UPLINK=50
DEV=eth0
# low priority OUTGOING traffic - you can leave this blank if you want
# low priority source netmasks
NOPRIOHOSTSRC=
# low priority destination netmasks
NOPRIOHOSTDST=
# low priority source ports
NOPRIOPORTSRC="4661 4662 4665 4881 4882"
# low priority destination ports
NOPRIOPORTDST="4661 4662 4665 4881 4882"
# Now remove the following two lines :-)
#echo Please read the documentation in 'README' first
#exit
if [ "$1" = "status" ]
then
tc -s qdisc ls dev $DEV
tc -s class ls dev $DEV
exit
fi
# clean existing down- and uplink qdiscs, hide errors
tc qdisc del dev $DEV root 2> /dev/null > /dev/null
tc qdisc del dev $DEV ingress 2> /dev/null > /dev/null
if [ "$1" = "stop" ]
then
exit
fi
###### uplink
# install root HTB, point default traffic to 1:20:
tc qdisc add dev $DEV root handle 1: htb default 20
# shape everything at $UPLINK speed - this prevents huge queues in your
# DSL modem which destroy latency:
tc class add dev $DEV parent 1: classid 1:1 htb rate ${UPLINK}kbit burst
6k
# high prio class 1:10:
tc class add dev $DEV parent 1:1 classid 1:10 htb rate ${UPLINK}kbit \
burst 6k prio 1
# bulk & default class 1:20 - gets slightly less traffic,
# and a lower priority:
tc class add dev $DEV parent 1:1 classid 1:20 htb rate
$[9*$UPLINK/10]kbit \
burst 6k prio 2
tc class add dev $DEV parent 1:1 classid 1:30 htb rate
$[8*$UPLINK/10]kbit \
burst 6k prio 2
# all get Stochastic Fairness:
tc qdisc add dev $DEV parent 1:10 handle 10: sfq perturb 10
tc qdisc add dev $DEV parent 1:20 handle 20: sfq perturb 10
tc qdisc add dev $DEV parent 1:30 handle 30: sfq perturb 10
# TOS Minimum Delay (ssh, NOT scp) in 1:10:
tc filter add dev $DEV parent 1:0 protocol ip prio 10 u32 \
match ip tos 0x10 0xff flowid 1:10
# ICMP (ip protocol 1) in the interactive class 1:10 so we
# can do measurements & impress our friends:
tc filter add dev $DEV parent 1:0 protocol ip prio 10 u32 \
match ip protocol 1 0xff flowid 1:10
# To speed up downloads while an upload is going on, put ACK packets in
# the interactive class:
tc filter add dev $DEV parent 1: protocol ip prio 10 u32 \
match ip protocol 6 0xff \
match u8 0x05 0x0f at 0 \
match u16 0x0000 0xffc0 at 2 \
match u8 0x10 0xff at 33 \
flowid 1:10
# Neues von Lars
tc filter add dev $DEV parent 1: protocol ip prio 10 u32 \
match ip dport 143 0xffff flowid 1:10
tc filter add dev $DEV parent 1: protocol ip prio 10 u32 \
match ip sport 143 0xffff flowid 1:10
tc filter add dev $DEV parent 1: protocol ip prio 10 u32 \
match ip dport 3128 0xffff flowid 1:10
tc filter add dev $DEV parent 1: protocol ip prio 10 u32 \
match ip sport 3128 0xffff flowid 1:10
tc filter add dev $DEV parent 1: protocol ip prio 10 u32 \
match ip dport 80 0xffff flowid 1:10
tc filter add dev $DEV parent 1: protocol ip prio 10 u32 \
match ip sport 80 0xffff flowid 1:10
# rest is 'non-interactive' ie 'bulk' and ends up in 1:20
# some traffic however suffers a worse fate
for a in $NOPRIOPORTDST
do
tc filter add dev $DEV parent 1: protocol ip prio 14 u32 \
match ip dport $a 0xffff flowid 1:30
done
for a in $NOPRIOPORTSRC
do
tc filter add dev $DEV parent 1: protocol ip prio 15 u32 \
match ip sport $a 0xffff flowid 1:30
done
for a in $NOPRIOHOSTSRC
do
tc filter add dev $DEV parent 1: protocol ip prio 16 u32 \
match ip src $a flowid 1:30
done
for a in $NOPRIOHOSTDST
do
tc filter add dev $DEV parent 1: protocol ip prio 17 u32 \
match ip dst $a flowid 1:30
done
# rest is 'non-interactive' ie 'bulk' and ends up in 1:20
tc filter add dev $DEV parent 1: protocol ip prio 18 u32 \
match ip dst 0.0.0.0/0 flowid 1:20
########## downlink #############
# slow downloads down to somewhat less than the real speed to prevent
# queuing at our ISP. Tune to see how high you can set it.
# ISPs tend to have *huge* queues to make sure big downloads are fast
#
# attach ingress policer:
tc qdisc add dev $DEV handle ffff: ingress
# filter *everything* to it (0.0.0.0/0), drop everything that's
# coming in too fast:
tc filter add dev $DEV parent ffff: protocol ip prio 50 u32 match ip src
\
0.0.0.0/0 police rate ${DOWNLINK}kbit burst 10k drop flowid :1
---------------------------snip-----------------------------------------
----
--
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