I found a problem in the Ultimate Traffic Conditioner page in the HTB
script. The two classes of traffic 1:10 and 1:20 are given rates of
100% and 90% of their parent, which add up to 190%. HTB classes can't
have their children's rates add up to more than their own rate.
From the looks of it, the intent was to grant the high priority class a
guaranteed 10% of bandwidth, while still allowing it to borrow unused
bandwidth from the bulk class. I've attached a small change that
achieves that goal. I hope that's helpful.
-Edward L. Hannaford
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diff --git a/lartc.db b/lartc.db
index ab12035..0fc4576 100644
--- a/lartc.db
+++ b/lartc.db
@@ -8887,13 +8887,14 @@ tc qdisc add dev $DEV root handle 1: htb default 20
tc class add dev $DEV parent 1: classid 1:1 htb rate ${UPLINK}kbit burst 6k
-# high prio class 1:10:
+# high prio class 1:10 - guaranteed 10 percent, but it can borrow
+# unused bandwidth up to the maximum, and has the highest priority:
-tc class add dev $DEV parent 1:1 classid 1:10 htb rate ${UPLINK}kbit \
- burst 6k prio 1
+tc class add dev $DEV parent 1:1 classid 1:10 htb rate $[$UPLINK/10]kbit \
+ ceil ${UPLINK}kbit burst 6k prio 1
# bulk & default class 1:20 - gets slightly less traffic,
-# and a lower priority:
+# a lower priority, and can't borrow bandwidth:
tc class add dev $DEV parent 1:1 classid 1:20 htb rate $[9*$UPLINK/10]kbit \
burst 6k prio 2
