Re: ath5k: Weird Retransmission Behaviour

[Bruno Randolf <br1@einfach.org>]

On Tue December 7 2010 10:12:18 Jonathan Guerin wrote:
> > Another thing that strikes me here is: why use multi rate retries if the
> > rate is all the same? (Ignore the actual value of the rate, this is the
> > HW rate code).
> > 
> > Other examples:
> > 
> > *** txdesc tries 2
> > *** mrr 0 tries 9 rate 12
> > *** mrr 1 tries 2 rate 13
> > *** mrr 2 tries 3 rate 11
> > 
> > = 16 transmissions in sum.
> > 
> > *** txdesc tries 9
> > *** mrr 0 tries 3 rate 11
> > *** mrr 1 tries 9 rate 8
> > *** mrr 2 tries 3 rate 11
> > 
> > = 24 transmissions in sum. Again, rate[1] and rate[3] are the same, so
> > why bother setting it up twice?
> 
> I'm not sure if you still had a fixed rate set here - and I don't know
> 100% how minstrel works - but it could be that minstrel is trying to
> do some probing for better rates (if it was set to auto-rate)?

I did not set a fixed rate, so minstrel was probing for better rates / 
providing alternative rates.

In any case there is no reason to use the same rate twice.

bruno