[drats_users] D-Rats v0.2.7b2 Latest Version Testing

Dennis Rogers
Thu Sep 25 14:36:57 PDT 2008


Yes, voice traffic.

On Thu, Sep 25, 2008 at 4:05 PM, Dan Smith <dsmith at danplanet.com> wrote:

> > 1.  First, interruptions will cause immediate failure of transfer
> > every time.
>
> Interruptions do not cause failures on simplex.  There is so much
> garbage that comes over the wire on the reflector that I imagine some of
> that has to do with it.
>
> > 2.  Busy reflectors are a real problem and cause transfer failures
> > most times.
>
> I don't doubt this a bit.  Optimizing for the quiescent case seems to be
> the most effective thing to me.  Even a small file will take ages to
> transfer if the protocol is patient enough to let people chatter while
> it's trying to do its work.  I don't really think that trying to inject
> such extreme patience is particularly effective.  What do others think?
>
> > Best Results**      '896' Block Size and Pipeline '10'  (defaults
> > always failed)        yields 39.48 B/s* ** *
> > Worse Results**      '768' Block Size and Pipeline '11'  (    "
> > "          "     )        yields 38.43 B/s* *
>
> These settings are effectively the same, so I'd attribute any
> variability to luck or Murphy.
>
> > We used REF001 B with traffic occurring 100% on REF001C, then we used
> > REF004 with absolutely no traffic.
>
> 100% voice traffic you mean?  I can't see how trying to transfer data
> over an otherwise busy (with voice traffic) reflector is at all
> advantageous for either the voice or data users.
>
> For the quiescent case, the settings that you really want to try are the
>  warm-up and forced delay.  Setting forced delay to 6 (or more)
> seconds, with a warm-up delay of 0 and warm-up length of 64 might yield
> some interesting results.
>
> --
> Dan Smith
> dsmith#danplanet.com, s/#/@/
> www.danplanet.com
> KK7DS
>
> _______________________________________________
> drats_users mailing list
> drats_users at lists.danplanet.com
> http://lists.danplanet.com/mailman/listinfo/drats_users
>



-- 
Regards,

Dennis, N5VRP
n5vrp.satx at gmail.com

Dstar User / Gateway Admin / D-PRS Provider
ARRL Member
Cactus-Intertie Member
AMSAT Member, President's Club

73's from SATX, EL09rk
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://intrepid.danplanet.com/pipermail/drats_users/attachments/20080925/65a71a81/attachment.html 


More information about the drats_users mailing list