[Ovmsdev] High hologram usage

[Craig Leres]

On 4/10/25 13:30, Michael Balzer via OvmsDev wrote:
> Am 10.04.25 um 19:16 schrieb Craig Leres:
>> On 4/9/25 10:54, Michael Balzer via OvmsDev wrote:
>>> I cannot see how the modem in your bench module "dev" could cause >8 
>>> MB network traffic when the module has Wifi all the time, except by 
>>> many reconnects + Hologram counting these as traffic (which I think 
>>> they shouldn't and don't do), or by the module not using Wifi due to 
>>> a test or very poor signal level.
>>>
>>> The only modem change coming to my mind is the GSM signal quality 
>>> extension by Jaime, which initially had switched good & bad signal 
>>> levels. But that wouldn't have triggered a modem reconnect, rather 
>>> reboots, and that wouldn't have gone unnoticed by you.
>>>
>>> You can check the cellular reconnect count from "cellular status 
>>> debug". Of course that only counts reconnects that need an IP 
>>> renegotiation, not transparent transitions to other cell towers.
>>>
>>> Looking forward to your findings.
>>
>> The version that causes problems for me is 3.3.004-324-g367f6b95
> 
> That would be commit 367f6b950f62adef04c8c877f5e29889e6e22c64, which 
> only included minor changes to the e-Up module, so that can be ruled out 
> as the causing commit.
> 
> https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/ 
> commit/367f6b950f62adef04c8c877f5e29889e6e22c64

My testing found:

     3.3.004-323-gbc1f75c9    24Nov24 good
     3.3.004-324-g367f6b95    25Nov24 BAD

When I run:

     git diff bc1f75c9 367f6b95

I see a *lot* more changes than in the url you show above.

I guess there are somehow multiple commits hidden in the range between 
323 and 324?

>> All modules are using a lot more cellular data but one in particular 
>> stands out. It's the one with the lowest wifi dBm but it's not *that* 
>> bad, but it makes me wonder if there is some kind of wifi power saving 
>> that's making wifi frequently unavailable causing cellular data usage 
>> (combined with something in this version that is 10X as chatty -- I 
>> suspect fixing this will get my usage back down).
> 
> Did you check your network wifi SQ & reconnect settings?

I don't know what those are (and it seems to be somewhat of a POLA 
violation that the default config would use 10X the cellular data 
(especially for modules that are on wifi).

> Not that they would make any difference from that commit, but maybe it's 
> not the commit but some random Wifi fluctuation causing an occasional 
> switch to cellular.
> 
> That should be clearly visible in the logs though.

I guess I have more commit hashes to test.

		Craig