[ovs-discuss] queue table priority problem

[Shan Hu]

Ben, you mean i run tc directly under openflow network or normal network?


----- Original Message -----
From: "Ben Pfaff" <blp at nicira.com>
To: "Shan Hu" <sxh102320 at utdallas.edu>
Cc: "Shan Hu" <shan.hu at utdallas.edu>, discuss at openvswitch.org
Sent: Thursday, November 10, 2011 9:39:55 AM
Subject: Re: [ovs-discuss] queue table priority problem

Well, can you get it to do what you want by running "tc" directly to
configure a qdisc?  If so, there is probably a bug in ovs-vswitchd that
we can fix.   If not, then the priority is not going to work.

On Thu, Nov 10, 2011 at 12:12:12AM -0600, Shan Hu wrote:
> 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.