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Latency spikes on the hour

I’ve recently noticed spikes in latency occurring every hour, on the hour exactly. Looking back at the daily graphs I see it started at 03.00 on 14/10/20 following a disconnection at just after 02.00. I’ve confirmed that is isn’t due to Wi-Fi traffic and the spikes still occur when all wired connections to the hub (3) are removed. The regular nature of the spikes suggest it is a wider network issue (possibly status monitoring?) but I’ve never seen this before. It doesn’t appear to be causing any problems (I don’t play games), but I have had the hub lose connection a little more frequently recently. Router status figures always look good, and the network log doesn’t appear to show anything relevant.

vm hourly peaks.jpg

Thank you for looking!

Adrian

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Alessandro Volta
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Re: Latency spikes on the hour

Can you post a link to your live graph please 


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Re: Latency spikes on the hour

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Alessandro Volta
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Re: Latency spikes on the hour

Interesting. I have the same issue but with a Hub4 and Gig1.

What hub and speed package are you on?

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Re: Latency spikes on the hour

Ah. I'm using a Hub 3 with the M50 package.

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Message 6 of 13
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Re: Latency spikes on the hour

https://www.thinkbroadband.com/faq/broadband-quality-monitor

Suggests that...

My graph has lots of very regularly spaced yellow spikes on it! What is wrong with my connection?

Some broadband routers exhibit patterns of behaviour. This is often because ICMP is handled at a lower priority than other traffic, so if a router does some form of housekeeping at regular intervals you can see patterns not unlike the graph below:

*graph*

BQM graph showing router-induced tooth-comb latency pattern

This graph is from a Be/O2 connection, and is most likely using a Thomson 585 router. There is nothing wrong, and the spikes do not affect gaming. In this graph the extra yellow spikes between 3pm and midnight, probably mean the connection was actually being used


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John
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My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
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Re: Latency spikes on the hour

OK. But still, it's an interesting thing to see from someone on a different hub/package..

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Re: Latency spikes on the hour

Regular on the hour, every hour pings are more likely to be something else though...

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Re: Latency spikes on the hour

Good point Gary, is there a device on the connection set to do something (perhaps unbeknown to you) at regular intervals?

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John
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My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
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Re: Latency spikes on the hour


@jbrennand wrote:
Good point Gary, is there a device on the connection set to do something (perhaps unbeknown to you) at regular intervals?

Me personally, (and without hijacking this thread from OP 😊), no, I disconnected all devices from mine one day, wired and wireless, and it still occured.


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