[libvirt-users] Strange behavior of QoS

[Davide Guerri]

On 05/dic/2012, at 08:08, Gao Yongwei <itxx00 at gmail.com> wrote:
> provide your os version and libvirt version plz.
> and use the following command to check the tc mtu size:
>    tc filter list dev vnet0 root
> if the mtu size in the output is not 64kb,then you must update your libvirt to 0.9.11 or later. 
> 

Thanks Gao (and you all) for the reply and sorry for the multiple post,

I'm using libvirt 0.9.8 on Ubuntu 12.04 and, yes, mtu is not 64k:

!(~) # tc filter list dev vnet43 root
filter parent ffff: protocol ip pref 49152 u32 
filter parent ffff: protocol ip pref 49152 u32 fh 800: ht divisor 1 
filter parent ffff: protocol ip pref 49152 u32 fh 800::800 order 2048 key ht 800 bkt 0 flowid :1 
  match 00000000/00000000 at 12
 police 0xa rate 20480Kbit burst 2560Kb mtu 2560Kb action drop overhead 0b 
ref 1 bind 1

I'll update asap.

Thanks again,
 Davide.