Re: [LARTC] overlimit in tc statistics

Linux Advanced Routing and Traffic Control

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Stef Coene wrote:
On Friday 04 July 2003 13:18, Sergey Smirnov wrote:

There is overlimit in queueing disciplines statistics:

# tc -s qdisc show dev eth1|grep overlimit
 Sent 2405317 bytes 17168 pkts (dropped 0, overlimits 0)
 Sent 145699 bytes 872 pkts (dropped 0, overlimits 0)
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
 Sent 25374 bytes 160 pkts (dropped 0, overlimits 0)
 Sent 842 bytes 12 pkts (dropped 0, overlimits 0)
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
 Sent 38061 bytes 73 pkts (dropped 0, overlimits 0)
 Sent 35727 bytes 90 pkts (dropped 0, overlimits 0)
 Sent 2651738 bytes 18380 pkts (dropped 0, overlimits 318)

But traffic classes statistics without overlimits:
# tc -s class show dev eth1|grep overlimit
 Sent 2373030 bytes 16963 pkts (dropped 0, overlimits 0)
 Sent 35727 bytes 90 pkts (dropped 0, overlimits 0)
 Sent 2616582 bytes 18159 pkts (dropped 0, overlimits 0)
 Sent 38061 bytes 73 pkts (dropped 0, overlimits 0)
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
 Sent 25374 bytes 160 pkts (dropped 0, overlimits 0)
 Sent 842 bytes 12 pkts (dropped 0, overlimits 0)
 Sent 143548 bytes 861 pkts (dropped 0, overlimits 0)

I don't understand this.
What does this mean?

We are maybe guru's, but this is not enough information. What's your setup, used commands, network topology, what you want to do, tests you did, full output of you tc commands, .........


Stef

O'k. I have Debian stable Linux router to Internet.
I want manage Internet traffic on it:
Increase priority and speed of some protocols and decrease for others.
I know that I can change this only for outgoing packets.
First question:
If I decrease priority and speed for local network interface
does this mean that priority and speed for Internet interface
for the same protocol also decreases?
For example:
eth0 local network
eth1 Internet

tc qdisc del dev eth0 root
tc qdisc add dev eth0 root handle 1 htb default 99
tc class add dev eth0 parent 1: classid 1:2 htb rate 256Mbit burst 15k
tc class add dev eth0 parent 1:2 classid 1:10 htb rate 64Kbit ceil 128Kbit burst 15k prio 4
tc qdisc add dev eth0 parent 1:10 handle 10 sfq perturb 10
tc filter add dev eth0 parent 1:0 protocol ip prio 100 u32 match ip sport 80 0xffff match ip dst 192.168.1.0/24 classid 1:10


Does this means that incoming traffic on eth1 to port 80 will be in 64Kbit-128Kbit with prio 4?
--
Sergey Smirnov




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