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NTP causing crazy lag

Reddog
Grafter
Posts: 89
Thanks: 2
Registered: 21-03-2009

NTP causing crazy lag

So for a few days now my net has been lagging really badly.
Rubber banding like crazy in games.
So i went to look in the routes page for my Netgear DG834G and noticed a huge amount of NTP synced,unsynced,synced,unsynced. Really the list was huge of the amount of times this was happening.
I think is has something to do with the U.S DST being different to the UKs?
Anyway i went and found a UK based NTP and put it in the list, i ticked the box that says Use this NTP Server list.
The time changed to the correct one and everything seemed fixed, but a short time later the problem has came back.
Router is an hour out and i keep getting Sync, unsync logs and i'm pretty sure this is what's causing me bad lag spikes in games.
Anyone?
11 REPLIES
Community Veteran
Posts: 1,101
Registered: 10-09-2010

Re: NTP causing crazy lag

I'm struggling to come up with a scenario to explain what your seeing other than a hardware fault.
I would call Netgear and use their support (depending on age of the router you may have to pay).
Reddog
Grafter
Posts: 89
Thanks: 2
Registered: 21-03-2009

Re: NTP causing crazy lag

Well i'm pretty sure it will fix itself once the UK clocks go forward this weekend.
If it doesn't i still could use the PN Thompson one.
Community Veteran
Posts: 3,789
Registered: 08-06-2007

Re: NTP causing crazy lag

Netgear routers generally resync their time if the line itself suffers from drops - are you sure that the line itself isn't dropping?
Reddog
Grafter
Posts: 89
Thanks: 2
Registered: 21-03-2009

Re: NTP causing crazy lag

Nah its not the line at all, that's solid.
Just for some reason the NTP is going crazy. The routers time is an hour ahead and it then resyncs to UK time then Unsyncs and just keeps doing that a lot of times in a short period.
Reddog
Grafter
Posts: 89
Thanks: 2
Registered: 21-03-2009

Re: NTP causing crazy lag


Fixed it now i think, i just un ticked Adjust for Daylight Savings Time and it seems to have solved the issue.
Community Veteran
Posts: 26,692
Thanks: 916
Fixes: 10
Registered: 10-04-2007

Re: NTP causing crazy lag

Quote from: fourfourdevon
I would call Netgear and use their support (depending on age of the router you may have to pay).

Not an option given that he's not using Netgear firmware!
jelv (a.k.a Spoon Whittler)
   Why I have left Plusnet (warning: long post!)   
Broadband: Andrews & Arnold Home::1 (FTTC 80/20)
Line rental: Pulse 8 Home Line Rental (£13/month)
Mobile: iD mobile (£4/month)
Community Veteran
Posts: 26,692
Thanks: 916
Fixes: 10
Registered: 10-04-2007

Re: NTP causing crazy lag

Quote from: Reddog
Anyway i went and found a UK based NTP

I use ntp.plus.net!
jelv (a.k.a Spoon Whittler)
   Why I have left Plusnet (warning: long post!)   
Broadband: Andrews & Arnold Home::1 (FTTC 80/20)
Line rental: Pulse 8 Home Line Rental (£13/month)
Mobile: iD mobile (£4/month)
Community Veteran
Posts: 1,101
Registered: 10-09-2010

Re: NTP causing crazy lag

Quote from: jelv
Quote from: fourfourdevon
I would call Netgear and use their support (depending on age of the router you may have to pay).

Not an option given that he's not using Netgear firmware!
That didn't become clear until he posted a pic.
Steve
Seasoned Pro
Posts: 6,805
Thanks: 308
Registered: 13-07-2009

Re: NTP causing crazy lag

Quote from: jelv
Quote from: Reddog
Anyway i went and found a UK based NTP

I use ntp.plus.net!
Me too Smiley
If life gives you lemons, make lemonade.
Community Veteran
Posts: 1,136
Thanks: 2
Registered: 30-07-2007

Re: NTP causing crazy lag

I use:
0.freebsd.pool.ntp.org
1.freebsd.pool.ntp.org
2.freebsd.pool.ntp.org
(probably the default for FreeBSD)
I'd be surprised if it was the firmware's fault as I'd expect a seasoned firmware like DGTeam to set the clock to UTC and then use a config setting to display for the appropriate time-zone.
Maybe its just wishful thinking on my part, because that's how everything would work in an ideal world ...
Also, NTP traffic isn't bandwidth intensive, probably under 1kb each transaction, however if the kernel of the router is having to deal with 1hr time shifts frequently that could upset it as the time stamps in the packets would be too far in the future, or too far in the past for the system to make sense of them.
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F9 ADSL customer since 27 Aug 2004
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Community Veteran
Posts: 1,101
Registered: 10-09-2010

Re: NTP causing crazy lag

Hmm, I can confirm that I had NTP weirdness yesterday with several computers and other devices on my network moving forward one hour up to 12 hours in advance of when they should have.  And I also use DGTeam...