1) the crash. kernel 2.1.130 it happens when i try to remove the qdisc
from eth0 or removing a class with child classes still there. I didn't
investigate this any further for now (i didn't save the synmtab when
inserting the cbq module. i'll rebuild the kernel with cbq as a
builtin thing.
2) the tests
i'm experimenting with CBQ and my tests show unexpected behaviour:
The setup is as follows:
#!/bin/sh
tc qdisc add dev eth0 root handle 1: cbq bandwidth 10Mbit allot 1514 cell 8 avpkt 1000
mpu 64
tc class add dev eth0 parent 1:0 classid 1:1 cbq bandwidth 10Mbit rate 10Mbit allot
1514 cell 8 weight 1Mbit prio 8 maxburst 20 avpkt 1000 isolated
#bononunu class
tc class add dev eth0 parent 1:1 classid 1:2 cbq bandwidth 10Mbit rate 5Mbit allot
1514 cell 8 weight 300Kbit prio 3 maxburst 20 avpkt 1500 split 1:0
#chomsky
tc class add dev eth0 parent 1:1 classid 1:3 cbq bandwidth 10Mbit rate 4Mbit allot
1514 cell 8 weight 200Kbit prio 3 maxburst 20 avpkt 1500 split 1:0
#elias
tc class add dev eth0 parent 1:1 classid 1:4 cbq bandwidth 10Mbit rate 1Mbit allot
1514 cell 8 weight 100Kbit prio 3 maxburst 20 avpkt 1500 split 1:0
tc filter add dev eth0 parent 1:0 protocol ip prio 100 route
#bononunu host route thruogh class 1:2
ip route add 193.46.232.10 dev eth0 flow 0x10002
#chomsky host route through class 1:3
ip route add 193.46.232.190 dev eth0 flow 0x10003
#elias host route through class 1:4
ip route add 193.46.232.175 dev eth0 flow 0x10004
what i'm expecting is that the traffic to bononunu is around 5 Mbit,
to chomsky around 4 Mbit and to elias around 1Mbit.
What i'm getting (tested with netpipe) is:
bononunu:
32: 3520 bytes 27 times --> 2.97 Mbps in 0.009036 sec
33: 3530 bytes 27 times --> 2.99 Mbps in 0.008995 sec
34: 3540 bytes 27 times --> 2.89 Mbps in 0.009330 sec
35: 3550 bytes 26 times --> 2.98 Mbps in 0.009103 sec
chomsky:
32: 3520 bytes 27 times --> 2.93 Mbps in 0.009155 sec
33: 3530 bytes 27 times --> 2.97 Mbps in 0.009074 sec
34: 3540 bytes 27 times --> 2.98 Mbps in 0.009069 sec
35: 3550 bytes 27 times --> 2.87 Mbps in 0.009437 sec
elias:
26: 3460 bytes 21 times --> 2.27 Mbps in 0.011632 sec
27: 3470 bytes 21 times --> 2.32 Mbps in 0.011410 sec
28: 3480 bytes 21 times --> 2.29 Mbps in 0.011585 sec
29: 3490 bytes 21 times --> 2.30 Mbps in 0.011577 sec
(elias is somewhat slower then the other two machines. I don't know
why, I suspect our ethernet switch is misconfigured or there's a
fullduplex/halfduplex mismatch somewhere).
tc -s class dev eth0 show output:
class cbq 1: root rate 10Mbit (bounded,isolated) prio 8
Sent 166952 bytes 964 pkts (dropped 0, overlimits 0)
borrowed 0 overactions 0 avgidle 762 undertime 0
class cbq 1:1 parent 1: rate 10Mbit (isolated) prio 8
Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
borrowed 16973 overactions 0 avgidle 739 undertime 0
class cbq 1:2 parent 1:1 rate 5Mbit prio 3
Sent 25598643 bytes 29454 pkts (dropped 0, overlimits 0)
borrowed 0 overactions 0 avgidle 27300 undertime 0
class cbq 1:3 parent 1:1 rate 4Mbit prio 3
Sent 18587864 bytes 21403 pkts (dropped 0, overlimits 0)
borrowed 0 overactions 0 avgidle 42832 undertime 0
class cbq 1:4 parent 1:1 rate 1Mbit prio 3
Sent 10025266 bytes 11685 pkts (dropped 0, overlimits 0)
borrowed 16973 overactions 0 avgidle -28274 undertime 11264
--
Michael Lausch/g.a.m.s. edv dienstleistungen gmbh
See my web page <http://www.lausch.at/> or query PGP key server for PGP key.
"Reality is that which, when you stop believing in it, doesn't go away".
-- Philip K. Dick
-
To unsubscribe from this list: send the line "unsubscribe linux-net" in
the body of a message to [EMAIL PROTECTED]
