Thanks,
The OF version error was resolved, but actually I'm not sure if I'm doing
the whole process correctly.
The problem is that I want to measure how many packet_in events can the
controller handle in 2 scenarios:
1- While a semi-heavy computation is being run in controller concurrently
with packet_in flooding from cbench.
2- Cbench app alone running.
How can I test the behavior correctly? Intuitively, the result should
reflect that when the controller is running some busy loop, it can respond
less packet_in events.
What I have done now, is placing the busy loop in packet_in handler of
simple_switch and calling cbench and simple_switch simultaneously for the
first scenario, and without simple_switch for the second scenario.
Regards.
On Tue, Oct 11, 2016 at 5:21 AM, Iwase Yusuke <iwase.yusu...@gmail.com>
wrote:
> Hi,
>
> IIRC, cbench supports ONLY OpenFlow 1.0.
> So, simple_switch_13.py (which supports only OpenFlow1.3) can not
> communicate with it.
> Please confirm the OpenFlow version definition of your app includes
> OpenFlow 1.0.
>
> The following is the definition of simple_switch.py (which supports
> OpenFlow 1.0).
> https://github.com/osrg/ryu/blob/master/ryu/app/simple_switch.py#L33
>
> Thanks,
> Iwase
>
>
> On 2016年10月09日 23:58, Ezzat Zar wrote:
>
>> Hi,
>> I have a simple packet_in handler Ryu app and I want to know how many
>> other
>> packet_in(s) the Ryu controller could afford responding (with cbench I
>> guess) with and without my app running.
>>
>> When I run
>> ./bin/ryu-manager ./ryu/app/simple_switch_13.py ./ryu/app/cbench.py
>>
>> I get the error:
>> =================================================================
>> loading app ./ryu/app/simple_switch_13.py
>> loading app ./ryu/app/cbench.py
>> loading app ryu.controller.ofp_handler
>> instantiating app ./ryu/app/simple_switch_13.py of SimpleSwitch13
>> instantiating app ryu.controller.ofp_handler of OFPHandler
>> instantiating app ./ryu/app/cbench.py of Cbench
>> Traceback (most recent call last):
>> File "./bin/ryu-manager", line 19, in <module>
>> main()
>> File "/home/ubuntu/ryu/ryu/cmd/manager.py", line 91, in main
>> services.extend(app_mgr.instantiate_apps(**contexts))
>> File "/home/ubuntu/ryu/ryu/base/app_manager.py", line 484, in
>> instantiate_apps
>> self._instantiate(app_name, cls, *args, **kwargs)
>> File "/home/ubuntu/ryu/ryu/base/app_manager.py", line 466, in
>> _instantiate
>> ofproto_protocol.set_app_supported_versions(cls.OFP_VERSIONS)
>> File "/home/ubuntu/ryu/ryu/ofproto/ofproto_protocol.py", line 46, in
>> set_app_supported_versions
>> assert _supported_versions, 'No OpenFlow version is available'
>> AssertionError: No OpenFlow version is available
>> =================================================================
>>
>> The only way it works is to run:
>>
>> ./bin/ryu-manager ./ryu/app/cbench.py
>>
>> and then launching cbench from oflops. but this does not include my app's
>> effect on controller performance.
>>
>> Any idea how to do this?
>> Thanks.
>>
>>
>>
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>>
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