[ovs-discuss] queue table priority problem

Shan Hu sxh102320 at utdallas.edu
Thu Nov 10 06:12:12 UTC 2011


So do you mean the priority is not gonna work?

On Nov 9, 2011, at 10:20 PM, Ben Pfaff <blp at nicira.com> wrote:

> On Wed, Nov 09, 2011 at 07:48:38PM -0600, Shan Hu wrote:
>> I try to reserve bandwidth and limit rate with the queue table, it works great with pyswitch module,but it doesnt work with routing module[nox controller], actually im wondering should i post this question to nox-dev mailing list since it does work in one case.
>> 
>> But i still have one problem with the queue table,i tried to set priority to two queues i had, but seems it doesnt work, and i could not find any cookbook for this priority part,my configuration is as below,is there something wrong with it?
>> 
>> ./ovs-vsctl set port eth2 qos=@newqos -- --id=@newqos create qos type=linux-htb queues=0=@q0,1=@q1 -- --id=@q0 create queue other-config:min-rate=600000000 other-config:max-rate=700000000 other-config:priority=50 -- --id=@q1 create queue other-config:min-rate=400000000 other-config:max-rate=500000000 other-config:priority=100
>> 
>> this setting does limit rates of two queues to 600Mbps~700Mbps and 400Mbps~500Mbps,respectively. But when i tried to use two queues at the same time,their rates both slow down.
> 
> In this setup, OVS just configures the HTB qdisc.  You are probably just
> seeing poor shaping by the HTB qdisc.



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