GPRS and QTMoko

[Wesley Frazier]

I have recently discovered if I set the GPRS connection to "Only
Connect When Needed" and then start and stop it. THEN switch it to
"Always Online" after a fresh reboot, that I then can enjoy days of
GPRS data on end, until my next reboot.

The problem is this ritual is sub optimal. Obviously the first
connection is initializing something that the "Always Online" mode
fails to. Although I do not know what it could be.

>
> ---------- Forwarded message ----------
> From: Brian <bneil at rochester.rr.com>
> To: community at lists.openmoko.org
> Date: Wed, 9 Mar 2011 08:40:39 -0500
> Subject: Re: GPRS and QTMoko
> On Wed, 9 Mar 2011 04:14:42 -0800 (PST)
> "W. B. Kranendonk" <wankelwankel at yahoo.com> wrote:
>
>> --- On Wed, 3/9/11, W. B. Kranendonk <wankelwankel at yahoo.com> wrote:
>> > --- On Tue, 3/8/11, Wesley Frazier
>> > <wes.frazier at gmail.com>
>> > wrote:
>> > > If I boot my freerunner up from a
>> > > cold boot and manually start GPRS it
>> > > works fine. (...) it seems to
>> > > stop
>> > I got the same issue on QTMoko 0.33.
>> > A while back GPRS came up as well;
>> came up on the list, that is.
>>
>> > run anything in the background
>> I tried one of the suggestions, run ping in the background as keep
>> alive.
>>
>> For the last one and a half hour (or something), ping has been
>> running happily with about 750ms for an answer; count of icmp_req is
>> 2800 at the moment.
>>
>
> I left an irssi session running for ~12 hours which never PTO'd. I did
> and still do have problems with GPRS staying connected whether using on
> demand or always on unless I background something.
>
>> The usefulness of the connection seems to have dropped though: the
>> first minutes NeronGPS would receive tiles relatively fast, and
>> browsing websites mostly filled with text would be OK.
>>
>> At the moment, downloading four tiles for one screen of NeronGPS
>> takes close to half a minute (increasing icmp answers to about 2
>> seconds).
>
> My provider (T-Mobile) has an "unlimited" $1.49 data day pass which
> slows to a crawl once it hits >30Mb of data. Does your provider do
> something similar?
>
> I hadn't noticed any slowdowns until hitting this limit while running
> irssi to keep the connection alive. Once it does slow down it stays
> slow until I buy another day pass. Does your connection speed ever
> increase again?
>
> Perhaps using mtr-tiny instead of ping might shed some light on what's
> happening with your GPRS connection.
>
>>
>> All of this is symptom description of course, I still have to find
>> out whether I am able to do anything useful with the underlying code.
>>
>> Regards,
>>
>> Boudewijn
>
> This reminds me of the old days when AOL used to drop connections which
> usually happened in the middle of a rather large software update of
> course.
>
> Brian
>
>
>
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>



-- 
Wes Frazier

"Nationalism is an infantile disease. It is the measles of mankind." -
Albert Einstein




-- 
Wes Frazier

"Nationalism is an infantile disease. It is the measles of mankind." -
Albert Einstein