10MB ping problems...

Pawned · 21-02-2010, 16:56

Hi, I've had VM for around 8 months now, but since last month I've been having really annoying ping problems, my ping will go from just fine (10 ping on my css server) to 500 on the same server, then I will have really high ping for around half an hour and then it'll go back to normal, this keeps happening at random times during the day.

Here's a tracert I just did when my ping was going bad:

Tracing route to 85-234-148-132.static.as29550.net [85.234.148.132]
over a maximum of 30 hops:

1 164 ms 248 ms 240 ms 10.136.40.1
2 214 ms 157 ms 152 ms lutn-cam-1b-v110.network.virginmedia.net [80.4.1
18.137]
3 86 ms 118 ms 105 ms lutn-core-1b-ae2-0.network.virginmedia.net [195.
182.174.193]
4 205 ms 485 ms 340 ms nth-bb-b-as5-0.network.virginmedia.net [213.105.
175.153]
5 314 ms 205 ms 123 ms tele-ic-1-as0-0.network.virginmedia.net [62.253.
184.2]
6 351 ms 466 ms 506 ms 114-14-250-212.static.virginmedia.com [212.250.1
4.114]
7 498 ms 158 ms 28 ms 213.133.130.78
8 92 ms 244 ms 271 ms 85-234-148-132.static.as29550.net [85.234.148.13
2]

Trace complete.

and here's one to the same server when the ping isn't going crazy.

Tracing route to 85-234-148-132.static.as29550.net [85.234.148.132]
over a maximum of 30 hops:

1 5 ms 6 ms 8 ms 10.136.40.1
2 9 ms 8 ms 9 ms lutn-cam-1b-v110.network.virginmedia.net [80.4.1
18.137]
3 27 ms 7 ms 7 ms lutn-core-1b-ae2-0.network.virginmedia.net [195.
182.174.193]
4 11 ms 8 ms 9 ms nth-bb-b-as5-0.network.virginmedia.net [213.105.
175.153]
5 18 ms 11 ms 20 ms tele-ic-1-as0-0.network.virginmedia.net [62.253.
184.2]
6 11 ms 10 ms 9 ms 114-14-250-212.static.virginmedia.com [212.250.1
4.114]
7 10 ms 12 ms 11 ms 213.133.130.78
8 21 ms 10 ms 28 ms 85-234-148-132.static.as29550.net [85.234.148.13
2]

Trace complete.

I've also done speedtests while the ping is going crazy and both my upload and download speeds are normal but my ping is 200 - 700

While my ping has been going crazy I've tried doing a power cycle which helped for 1 minute and then the ping went sky high again.

Pawned · 23-02-2010, 20:14

ping just started spiking now, here's a speedtest: http://www.speedtest.net/result/726835433.png

Spectato · 23-02-2010, 20:54

The upstream isn't "normal" in that picture, unless that's what you're used to!
Should be 0.40 - 0.50Mb/s surely?
Obviously, Speedtest isn't absolute, but that's still low even if out by 100%.

Try:

http://www.mybroadbandspeed.co.uk/speedtest

and

http://www.broadbandspeedchecker.co.uk

as well (and maybe speedtest again, with a few different servers).

Noggo · 23-02-2010, 22:28

You might have a program running in the background using up your upload (p2p software).

Welshchris · 23-02-2010, 22:31

Can u post ur modem power levels for us all to have a peek at see whats happening and phaps also the event log.

darren.b · 24-02-2010, 07:04

Quote:

Originally Posted by Welshchris

Can u post ur modem power levels for us all to have a peek at see whats happening and phaps also the event log.

What's phaps??

What's "u"

"ur"

And so on.

Jesus...

Pawned · 24-02-2010, 15:28

Yeah, my upload goes down quite a bit when my ping spikes, but it's still low when my ping is being fine too..

Here's a speedtest when my ping is fine:

and I got similar results on the speedtests linked by Spectato.

Here's the upstream and downstream power levels:

Upstream transmit Power Level : 48.5 dBmV
Downstream Receive Power Level : 5.9 dBmV
Downstream SNR : 41.1 dB

and here's the event log:

Wed Feb 24 15:00:10 2010 Wed Feb 24 15:00:10 2010 Warning (5) DHCP RENEW WARNING - Field invalid in response
Sun Feb 21 16:30:15 2010 Sun Feb 21 16:30:15 2010 Information (7) The s/w filename specified in the config file is the same as ...
Sun Feb 21 16:30:15 2010 Sun Feb 21 16:30:15 2010 Information (7) A software upgrade filename was specified in the config file.
Sun Feb 21 16:30:14 2010 Sun Feb 21 16:30:14 2010 Information (7) Authorized
Sun Feb 21 16:30:14 2010 Sun Feb 21 16:30:14 2010 Information (7) Registration complete!
Sun Feb 21 16:30:14 2010 Sun Feb 21 16:30:14 2010 Information (7) We registered with a DOCSIS 1.1 config file!
Sun Feb 21 16:30:14 2010 Sun Feb 21 16:30:14 2010 Information (7) Received a REG-RSP message from the CMTS...
Sun Feb 21 16:30:14 2010 Sun Feb 21 16:30:14 2010 Information (7) Sending a REG-REQ to the CMTS...
Sun Feb 21 16:30:14 2010 Sun Feb 21 16:30:14 2010 Information (7) CableModem SNMP configure complete
Sun Feb 21 16:30:14 2010 Sun Feb 21 16:30:14 2010 Information (7) IP init completed ok
Sun Feb 21 16:30:14 2010 Sun Feb 21 16:30:14 2010 Information (7) CableModem TFTP init ok
Sun Feb 21 16:30:14 2010 Sun Feb 21 16:30:14 2010 Information (7) CableModem DHCP client init ok
Sun Feb 21 16:30:14 2010 Sun Feb 21 16:30:14 2010 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Time Not Established Information (7) MAP w/initial maintenance region received
Time Not Established Time Not Established Information (7) Downstream sync ok
Time Not Established Time Not Established Information (7) Beginning initial ranging...
Time Not Established Time Not Established Information (7) downstream time sync acquired...
Time Not Established Time Not Established Information (7) Downstream sync ok
Time Not Established Time Not Established Information (7) starting ds time sync acquisition...
Time Not Established Time Not Established Information (7) Locked on the downstream. Waiting for UCDs...
Time Not Established Time Not Established Information (7) Downstream lock ok
Time Not Established Time Not Established Information (7) Sync Start
Sun Feb 21 16:22:36 2010 Sun Feb 21 16:22:36 2010 Critical (3) Received Response to Broadcast Maintenance Request, But no Un...
Sun Feb 21 16:22:37 2010 Sun Feb 21 16:22:37 2010 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/Q...
Sun Feb 21 16:11:58 2010 Sun Feb 21 16:11:58 2010 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Sat Feb 06 13:29:05 2010 Sat Feb 06 13:29:05 2010 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Fri Feb 05 15:41:09 2010 Fri Feb 05 15:41:09 2010 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Time Not Established Critical (3) No Ranging Response received - T3 time-out
Fri Feb 05 15:27:01 2010 Fri Feb 05 15:27:01 2010 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Fri Feb 05 13:58:40 2010 Fri Feb 05 13:58:40 2010 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Fri Feb 05 06:51:48 2010 Fri Feb 05 06:51:48 2010 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Thu Feb 04 18:52:32 2010 Thu Feb 04 18:52:32 2010 Critical (3) DHCP WARNING - Non-critical field invalid in response.

Few minutes after this post the ping went crazy again, not that big of a drop on the upload this time though:

Noggo · 24-02-2010, 19:28

I would post on newsgroup support. Explain and problems with intermittent drop offs in upload speed and bad lag spikes and they should check your connection out.

Sephiroth · 25-02-2010, 23:32

When gaming, you're rapidly sending small packets. Not much bandwidth but you need the upstream timeslots on demand.

A congested node (street box or UBR) will prevent that happening. Cause of congestion? Read the forum! It can be anything, but often poor load balancing and / or oversubscription.