[ovs-discuss] OVS QoS Types

[Guru Shetty]

On 24 March 2016 at 00:55, Fabian Schörghofer <
fabian.schoerghofer at salzburgresearch.at> wrote:

> Thank you for your answer.
>
> Does OVS respect the queues issued with tc? I have not tested it yet, but
> pfifo_fast could be in effect if type= is omitted.
>

Based on a quick search of other similar questions in discuss mailing list
and their answers, it looks like it is indeed possible to create queues
with linux tc and then use their queue numbers in your openflow flows. I
think it should work.

>
> Fabian
>
> On 03/23/2016 04:32 PM, Guru Shetty wrote:
>
>>
>>
>> On 23 March 2016 at 03:15, Fabian Schörghofer
>> <fabian.schoerghofer at salzburgresearch.at
>> <mailto:fabian.schoerghofer at salzburgresearch.at>> wrote:
>>
>>     I want to create QoS flows.
>>
>>     The examples on the Internet that I can find realize this by using
>>     the type=linux-htb in the creation, like the command below:
>>
>>     ovs-vsctl set port p1p1 qos=@newqos -- --id=@newqos create qos
>>     type=linux-htb other-config:max-rate=1000000000
>>     queues:1=@eth04queue1 queues:2=@eth04queue2 -- --id=@eth04queue1
>>     create queue other-config:max-rate=10000000 -- --id=@eth04queue2
>>     create queue other-config:max-rate=20000000
>>
>>     This will create a HTB scheduler as can be seen from this:
>>
>>     5: p1p1: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc
>>     htb state UP mode DEFAULT group default qlen 1000
>>          link/ether 68:05:ca:39:da:bc brd ff:ff:ff:ff:ff:ff
>>
>>     What other schedulers can I use for type? I want to use the
>>     pfifo_fast scheduler, but when I enter the first command with
>>     type=pfifo_fast or type=linux-pfifo_fast the result from ip link
>>     show will not change.
>>
>>     This leads me to believe that type=pfifo_fast or linux-pfifo_fast
>>     has no effect.
>>
>>     On some Linux versions pfifo_fast is the default queueing mechanism,
>>     some newer versions use mq, but that might not be relevant here.
>>
>>     Is it documented somewhere what strings I can use for those
>> mechanisms?
>>
>>
>> Documentation is at 'man ovs-vswitchd.conf.db'. Search for "QoS TABLE"
>>
>>
>>     Best Regards
>>     Fabian
>>     _______________________________________________
>>     discuss mailing list
>>     discuss at openvswitch.org <mailto:discuss at openvswitch.org>
>>     http://openvswitch.org/mailman/listinfo/discuss
>>
>>
>>
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