Re: [Madwifi-devel] rate control algorithm

[Bruno R. <bru...@4g...>]

hello john!

thanks, this one seems to work better.=20
i just commited it to the head and bsd branch.

bruno

On Wednesday 09 March 2005 16:51, John Bicket wrote:
> Hi,
>
> Here is a patch that has bunch of fixes:
>
> 1. use ath_hal_computetxtime so that it will estimate throughput for
> turbo modes correctly.
> 2. calculate the txtime independently for a few different packet sizes
> since delivery probability is affected by packet size.
> 3. fix setting the bit-rate for management frames.
> 4. fix ewma to average the first few packets instead of just setting the
> average to the first packet.
>
> I have tested this with an 802.11b, 802.11a, and 802.11g access point;
> if you still have problems can you tell me your set-up so I can
> replicate it?
>
> Thanks,
>
> --john
>
> Jonas Tarnstrom [jon...@re...] wrote:
> >Hi,
> >I've applied your patch but my two madwifi clients still won't associate
> > to each other.
> >
> >Is there work in progress regarding this?
> >
> >//JT
> >
> >
> >-----Ursprungligt meddelande-----
> >Fran: mad...@li...
> >[mailto:mad...@li...]For John Bicket
> >Skickat: den 7 mars 2005 18:33
> >Till: Bruno Randolf
> >Kopia: mad...@li...
> >Amne: Re: [Madwifi-devel] rate control algorithm
> >
> >
> >
> >Hi Bruno,
> >Here is a patch that fixes the scanning problem, and also updates
> >ni_txrate when it switches bitrates.
> >
> >Thanks,
> >
> >John
> >
> >Bruno Randolf [bru...@4g...] wrote:
> >>hello john!
> >>
> >>the sample rate control seems to work only in B mode in my setup. in A
> >> and
> >
> >G
> >
> >>mode the client cannot associate with the AP and scans forever.
> >>
> >>nevertheless, since it's optional and does not break anything, i have
> >> added the patch to the CVS HEAD and BSD branch. on the BSD branch i had
> >> to change one little thing, to adapt for the new ath_softc struct:
> >>
> >>-       int rate =3D sc->sc_hwmap[ds->ds_txstat.ts_rate &
> >
> >IEEE80211_RATE_VAL];
> >
> >>+       int rate =3D sc->sc_hwmap[ds->ds_txstat.ts_rate &
> >>IEEE80211_RATE_VAL].ieeerate;
> >>
> >>greetings,
> >>bruno
> >>
> >>On Sunday 06 March 2005 22:21, John Bicket wrote:
> >>> Hi Stefan,
> >>>
> >>> I just put a pdf at http://www.pdos.lcs.mit.edu/papers/jbicket-ms.pdf
> >>> using the -Ppdf switch.
> >>>
> >>> I also will keep an updated version of the patch at:
> >>> http://www.pdos.lcs.mit.edu/~jbicket/sample_rate.patch
> >>>
> >>> Thanks,
> >>>
> >>> John
> >>>
> >>> Stefan Br??ns [lu...@ka...] wrote:
> >>> >Am Sonntag, 6. M??rz 2005 07:15 schrieb John Bicket:
> >>> >> [...]
> >>> >> If you're interested in the details, my thesis on this
> >>> >> (including lots of measurements) is at
> >>> >> http://www.pdos.lcs.mit.edu/papers/jbicket-ms.ps
> >>> >
> >>> >Nice to read ...
> >>> >But can you create a pdf version of this? Don't forget the "-Ppdf"
> >
> >switch
> >
> >>> > for dvips, else it will use bitmap versions of the fonts and not the
> >>> > type1 (vector). After this, you can use ghostscript for the ps2pdf
> >>> > conversion.
> >>> >
> >>> >> I hope people will find this useful. I'm sure there are bugs in the
> >>> >> code that I haven't experienced yet, so if you see any, please let
> >>> >> me know.
> >>> >>
> >>> >> Thanks!
> >>> >>
> >>> >> John Bicket
> >>> >
> >>> >Greetings,
> >>> >
> >>> >Stefan
> >>> >
> >>> >--
> >>> >Stefan Br??ns  /  Kastanienweg 6 - Zimmer 1206  /  52074 Aachen
> >>> >mailto:lu...@gm...  http://www.kawo1.rwth-aachen.de/~lurchi/
> >>> >   phone: +49 241 169-4206     mobile: +49 160 3797725
> >>>
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