[ovs-dev] [PATCH 0/2] ovn: QOS updates with DSCP support

[Babu Shanmugam]

On Friday 22 April 2016 10:51 PM, Ben Pfaff wrote:
> On Fri, Apr 22, 2016 at 12:44:12PM +0530, bschanmu at redhat.com wrote:
>> From: Babu Shanmugam <bschanmu at redhat.com>
>>
>> Following are done through this series
>> 1. Changed the old approach of policing the packets. It is now shaped
>>     with queues. Changed the Logical_Port options for NB db
>> 2. Support of DSCP marking through options field in Logical_Port table
>>
>> Babu Shanmugam (2):
>>    ovn: Replace the QOS policing parameters with the usage of QOS table
>>    ovn: QOS DSCP markings for ports
> Have you tested this?  There are at least two aspects that seem relevant
> to testing.  First, propagating queuing through tunnels is somewhat
> indirect and one needs to make sure that the QoS configuration actually
> makes it to the physical device.  Second, HTB has a reputation for poor
> quality for links above about 1 Gbps, which isn't very fast
> anymore--that's why we also support HFSC.
Ben, I have not tested these aspects. The reason I used HTB is mainly 
because it supports
burst setting. From vswithc.conf.db man page, HFSC does not seem to have 
an option
for burst setting.
I could not understand how "propagating queuing through tunnels is 
somewhat indirect". I can test it if you
can give some more information on the problem.


Thanks,
Babu