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From: Dimitris Zilaskos <dzila@tassadar.physics.auth.gr>
To: lartc@vger.kernel.org
Subject: [LARTC] tc reliably hangs my system
Date: Wed, 03 Jul 2002 16:33:25 +0000	[thread overview]
Message-ID: <marc-lartc-102571407326905@msgid-missing> (raw)


 kernel 2.4.18-ac3 smp , iproute2-2.4.7-now-ss020116-try.tar.gz

 I am using the following scripts to adjust my traffic during certain
periods of time , running them cron and sometimes by hand . They can
reliably freeze the system if they are run  certain number of times .
No oops/panic/errors of whatsoever , just a frozen system .

the following "fast" script freezes the system after it is executed 7-8
times

tc qdisc del dev eth0 root
tc qdisc add dev eth0 root handle 10: cbq bandwidth 100Mbit avpkt 1000
tc class add dev eth0 parent 10:0 classid 10:1 cbq bandwidth 100Mbit \
rate 100Mbit allot 1514 weight 10Mbit prio 8 maxburst 20 avpkt 1000
tc class add dev eth0 parent 10:1 classid 10:100 cbq bandwidth 100Mbit \
rate 100Mbit allot 1514 weight 10Mbit prio 5 maxburst 20 avpkt 1000
tc class add dev eth0 parent 10:1 classid 10:200 cbq bandwidth 100Mbit \
rate 100Mbit allot 1514 weight 10Mbit prio 5 maxburst 20 avpkt 1000

tc qdisc add dev eth0 parent 10:100 sfq quantum 1514b perturb 10
tc qdisc add dev eth0 parent 10:200 tbf rate 6Mbit latency 50ms burst \
50000
tc qdisc del dev eth0 ingress
tc qdisc add dev eth0 handle ffff: ingress
tc filter add dev eth0 parent ffff: protocol ip prio 2 u32 match ip \
protocol 1 0xFF police rate 1kbit burst 10000 mtu 1k drop flowid :1

tc filter add dev eth0 parent 10: protocol ip prio 1 u32 match ip dst \
1.2.3.0/16 flowid 10:100
tc filter add dev eth0 parent 10: protocol ip prio 1 u32 match tcp src \
22 0xffff match ip protocol 0x6 0xff flowid 10:100
tc filter add dev eth0 parent 10: protocol ip prio 1 u32 match ip src \
1.2.3.25/32 flowid 10:200


 The following "slow" script freezes the system after being executed
around 11-18 times

tc qdisc del dev eth0 root
tc qdisc add dev eth0 root handle 10: cbq bandwidth 100Mbit avpkt 1000
tc class add dev eth0 parent 10:0 classid 10:1 cbq bandwidth 100Mbit \
rate 100Mbit allot 1514 weight 10Mbit prio 8 maxburst 20 avpkt 1000
tc class add dev eth0 parent 10:1 classid 10:100 cbq bandwidth 100Mbit \
rate 100Mbit allot 1514 weight 10Mbit prio 5 maxburst 20 avpkt 1000
tc class add dev eth0 parent 10:1 classid 10:200 cbq bandwidth 100Mbit \
rate 100Mbit allot 1514 weight 10Mbit prio 5 maxburst 20 avpkt 1000

tc qdisc add dev eth0 parent 10:100 sfq quantum 1514b perturb 10
tc qdisc add dev eth0 parent 10:200 tbf rate 3Mbit latency 50ms burst \
50000
tc qdisc del dev eth0 ingress
tc qdisc add dev eth0 handle ffff: ingress
tc filter add dev eth0 parent ffff: protocol ip prio 2 u32 match ip \
protocol 1 0xFF police rate 1kbit burst 10000 mtu 1k drop flowid :1

tc filter add dev eth0 parent 10: protocol ip prio 1 u32 match ip dst \
1.2.3.0/16 flowid 10:100
tc filter add dev eth0 parent 10: protocol ip prio 1 u32 match tcp src \
22 0xffff match ip protocol 0x6 0xff flowid 10:100

tc filter add dev eth0 parent 10: protocol ip prio 1 u32 match ip src \
1.2.3.25/32 flowid 10:200


 The ingress related parts are the prime suspects for me , i added them
recently . Before that no freezing has ever ocurred . I couldn't perform
more tests because the box is a rather busy server and the lockups cause
painfull reboots .

  Any advice is welcomed .

Kind regards ,
--
======================================
Dimitris Zilaskos

Department of Physics @ Aristotle Univercity of Thessaloniki , Greece
======================================
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LARTC mailing list / LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

             reply	other threads:[~2002-07-03 16:33 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-07-03 16:33 Dimitris Zilaskos [this message]
2002-07-03 16:47 ` [LARTC] tc reliably hangs my system Stef Coene
2002-07-04  8:07 ` Dimitris Zilaskos
2002-07-04 10:07 ` Dimitris Zilaskos
2002-07-04 14:42 ` bert hubert
2002-07-04 18:24 ` bert hubert
2002-07-05 13:35 ` Dimitris Zilaskos
2002-07-05 14:59 ` bert hubert

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