[LARTC] Weird HTB behaviour in 2.6.17

[Marlon Dutra]

On 7/27/06, Jake Altchill <altchill at hotmail.com> wrote:

> What kind of network cards do you have?

When I noticed the problem, I was using a Dell server with an Intel
e1000.

But I reproduced the same problem in my desktop, that's an AMD Semprom
with an nVidia ethernet card. So, different processor, chipset and nic.

> What are the tc stats that you get on the class (anything about
> giants?)?

class htb 1:31 parent 1:1 leaf 31: prio 0 rate 1000bit ceil 750000bit
burst 15Kb cburst 1974b
 Sent 11678670 bytes 2711 pkts (dropped 0, overlimits 0)
 rate 1725Kbit 43pps backlog 13p

As you can see, I have rate in 1725Kbit when my ceiling is 750Kbit. That
difference is low, since I'm testing on my Semprom. If I do the same on
the Dell server, the difference is much higher. Some times over ten
times the ceiling.

With a 2.4 kernel, it works perfectly in both hardwares.

> If these are the cards you are using you need to explicitly set the
> mtu for your classes to 16500.

Sorry, I didn't get it. How should I do that?

-- 
Marlon