Net i/o + storage i/o looking strange around 6 am daily

Node Operators troubleshooting
1

Hi there,

net i/o and storage i/o in Grafana look a bit strange and you might have an idea, what is going on:

In the first screen you can see a drop in net i/o around 6 am today, meanwhile for storage i/o it seems, that there was a “huge” rate-in at this time (correct?). I wonder, why “storage in” is not reflected in “net in”. → do not understand from a technical point of view.

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In the second screen you can see, that this behaviour is similar on a daily basis since October 2nd. Which is strange, as the node is never offline since a while and Saturday morning (October 2nd) is a time, I’ve definitely not changed anything in the network.

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Thx in advance

2

Do you have a internet connection with automatic disconnect by your ISP every 24h?

I have similar graphs when my DSL-Router gets a new dynamic IP, the network needs some time to handle this.

3

That might be the reason, indeed.

I’ve changed the config of my FritzBox in order not to force a refresh between 5/6 am. Let’s see if that helps or if the provider now refreshes during the day. :v:t2:

4

A FritzBox has a event log in the ‘System’ menu (‘Ereignisse’ in german), here are reconnects logged.
You could check the times against the drops in your graphs.

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5

High peaks in storage i/o could be a garbage collector. You need to compare with deleting events.

If something works - do not touch :slight_smile:

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6

Yeah, checked and deselected daily auto disconnect.

Let’s see over night or tomorrow. :sweat_smile: Currently online and running well.

7

FYI - I have reactivated the daily auto disconnect, as the reconnection took much longer without that. I’ll keep it like that now. :slight_smile: Thank you for your support @Krawi + @Alexey

8

Could you please elaborate what do you mean by that?

9

From Online Documentation:
https://service.avm.de/help/en/FRITZ-Box-7590-avme/018/I_verbindungseinstellungen_pppoepppoa

This part:

If the Internet Service Provider clears the connection at an inconvenient time,
you can reschedule this event for a more convenient period. To do this,
enable the option “Delay disconnection by provider to the period between”.
Then select the period of time from the list

10

Oh I see. Thank you. Seems this is specific for this router and perhaps to ISP.

11

With switching to mandatory VoIP for all until 2022 in germany this should be gone soon, but a disconnect every 180 days would be still happening.

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12

Sounds promising. Especially as this was activated from the provider this month and did not happen before. Strange. Thank you.