Drop in bandwidth usage

[SDMark]

I was out of town yesterday, but got back this AM and checked my graph1090 plots. I found this for my two sites.
Better setup:

poorer setup:

In each case at about Friday evening 18:15 (based on eyeballing the 48 hour plot - not shown here), the outgoing bandwidth dropped precipitously. It’s a bit hard to tell with the scale, but the incoming bandwidth seemed to drop as well.

[Aside - is this data available for download somewhere from the Pi? Is there a .txt, .csv, etc file somewhere with hard numbers I can get to and read into Excel (or similar) on my computer?]

I’m not sure what would have happened at that time that would have resulted in this. Each Pi is (as far as I know) only serving FA/FR24/ADSBEx - and other than messing around with the gains, I’ve done nothing that isn’t ‘stock’ for these feeds. Neither was rebooted, nor any new software installed.

Also of note - the range on the better setup dropped at about Midnight on Friday (I was long gone by then):

Given there wasn’t anything going on in the house, I presume “something” happened to the antenna on the roof, but I haven’t climbed up there to take a look yet. The gap in the timing (18:15 vs. 23:59) leads me to think these are unrelated, but maybe someone has seen this behavior before?

FWIW the range on the poorer setup didn’t show any such effect:

[wiedehopf]

@SDMark

I was out of town yesterday, but got back this AM and checked my graph1090 plots. I found this for my two sites.

I mean, check the journalctl.

Might just be that you just have a webinterface open on some screen and you switched that off?

[victorbravo77]

I found this anomaly. My adaptive dynamic range is, and has been, on and there is not a lot of ‘noise’ around me. I have made no functional or structural changes to my single node. Atmospherics? Solar? Looks pretty clean to me.

Face it, @SDMark, you just can’t go on vacation!

vb77

[victorbravo77]

[SDMark]

@wiedehopf Journalctl is a bit cryptic to me - what should I be looking for? I checked in and around the time of the drop (~18:00 Friday), and I see nothing obviously unusual, but I’m not sure what I’m looking for.

I feel a bit of a “headslap ‘doh!’” moment here - I bet you’re right that some computer in my house went to sleep and stopped asking for updated SkyAware maps and/or graphs. I’ll experiment with that possibility. Thanks for answering a “dumb question”!

[Dutchyb]

@SDMark

Thanks for answering a “dumb question”!

Hi SDMark,
there are no dumb questions. Only stupids answers. Don’t be ashamed to ask a question, if you searched the forum and you still can’t find an answer!