[Click] CPU Load measurement

[Eddie Kohler]

Hi Rémi,

Are you using polling drivers (PollDevice)?  If so, I'm afraid you're going to 
see 100% load always, as Click replaces the idle loop.

If you are not using polling drivers, then it depends on your configuration. 
Many configurations will correctly "sleep" when they have nothing to do, but 
some won't.  You could send your configuration in so we could look.

Eddie


On 5/11/11 2:52 AM, remi.clavier at orange-ftgroup.com wrote:
>
>   I need to measure the CPU Load used by click in kernel mode for different parameters of flows.
> Unfortunatly, it seems that the "top |grep kclick" instruction give unable results, even for very low rates, it give "100%" of CPU Load.
> I seems me that it's a know issue related to the proccess used by click to manage queues used by the router (permanent pooling).
> It's a way to avoid ( on work around) this issue to have a correct (=usable) value of the CPU Load, or more exactly, the available CPU if I increase the size of frames and/or increase the numebr of frames by second (I use Rated source at the input of the network to push data). In other terms to have an idea of the limit of the click router.
>
> Thanks for all
>
> Rémi
>
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