[Click] Scheduling ToDevice

[Beyers Cronje]

Hi Harald,

Have a look at the ScheduleInfo element -
http://read.cs.ucla.edu/click/elements/scheduleinfo . You should be able to
prioritize FromDevice over ToDevice. Although I have never tested
ScheduleInfo in userlevel Click I believe it should work.

Alternative you can also give Click's userlevel multithreading a go. Using
the StaticThreadSched element you can schedule FromDevice and ToDevice on
separate dedicated threads.

Beyers

On Tue, Jun 1, 2010 at 11:53 AM, Harald Schiöberg <
harald at net.t-labs.tu-berlin.de> wrote:

> Hi,
>
> following problem with userlevel:
>
> If click is CPU-bound and we always have packets to send,
> then the ToDevice::run_task will call _task.fast_reschedule() all the
> time, giving no cpu at all to the ingress processing.
>
> This is good behaviour for IP forwarding ( deliver before spending cpu
> on receiving),
> but I need to prioritize input processing over output.
> ( I need to process control-frames to stop sending )
>
>
> I tried to replace _task.fast_reschedule() with _task.reschedule() but
> that does solve it. Any suggestions ?
>
>        Harald
>
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