I'm a tc newbie, and I think I am close to being able to use it to control one of the virtual web sites on our Gentoo Linux server. The site has it's own IP address. I have a bit of a problem in that the way I originally configured tc, the busy site grabbed all the bandwidth, leaving none for the other (and more important) sites. Here is how I had configured it:
tc qdisc replace dev $NIC root tbf rate $RATE_TOTAL latency 50ms burst $BURST
The total data rate was pegged within acceptable limits, but the problem is that data stopped flowing after tc was active after a few hours. The busy site had a few peak periods and presumably used up all the traffic allotment. Perhaps tc remembers the traffic between invocations?
I then tried a slightly more sophisticated setup:
tc qdisc del dev $DEV root tc qdisc add dev $NIC root handle 1: cbq avpkt 1000 bandwidth 1000mbit tc class add dev $NIC parent 1: classid 1:1 cbq rate $RATE_PROBLEM allot 1500 prio 5 bounded # isolated tc filter add dev $NIC parent 1: protocol ip prio 16 u32 match ip dst $IP flowid 1:1
Unfortunately, I still don't get any traffic flowing while tc is active now. Seems that I need to reset something. Any suggestions? I've shut down the problem site and disabled tc while I try to figure out a solution.
Thanks for your help!
Mike mslinn at mslinn.com
From your other post I see 2.6.8.3 - I had to patch 2.6.8.1 to fix a TC options related panic. I don't know if it's in 2.6.8.3 already, though.
http://www.linuxhq.com/kernel/v2.6/9-rc2/net/sched/sch_api.c
Andy.
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