Cable Forum

Cable Forum (https://www.cableforum.uk/board/index.php)
-   Virgin Media Internet Service (https://www.cableforum.uk/board/forumdisplay.php?f=12)
-   -   Latency issues on the VM network? (https://www.cableforum.uk/board/showthread.php?t=33657477)

AdamD 01-11-2009 20:07

Latency issues on the VM network?
 
Noticed my broadband seems a little...er, lacklustre recently

Namely different websites I visit, sometimes take a few seconds to load
Downloads from the USA seem abnormally slow, to
For instance this test download from the Burstnet data centre in New york (http://66.96.192.92/bigtest.tgz) I'm getting about 200kb/sec, which seems slow for an east coast connection
It's the same on other east coast datacentres I've tried, to.

When running a ping on the first hop of my trace to these data centres, I'm getting occasional packet loss and pings as high as 100ms?

When I run a constant trace to an IP in the USA, I seem to hit ping rates as high as 400ms on occasion.

Code:

Host Name                                                  IP Address        Hop    Ping Time  Ping Avg  % Loss    Pkts r/s      Ping best/worst
lanc-cmts-06-lback-20.network.virginmedia.net              86.5.68.1          1      18ms        9ms        0%        50 / 50        4ms / 50ms
brig-core-1a-ge-117-2241.network.virginmedia.net          80.3.65.61        2      9ms        7ms        0%        50 / 50        5ms / 19ms
gfd-bb-a-so-020-0.network.virginmedia.net                  212.43.162.221    3      8ms        9ms        0%        50 / 50        6ms / 37ms
gfd-bb-b-ae0-0.network.virginmedia.net                    213.105.172.6      4      10ms        9ms        4%        48 / 50        5ms / 19ms
redb-ic-1-as0-0.network.virginmedia.net                    62.253.185.78      5      8ms        10ms      0%        50 / 50        7ms / 18ms
cr02.ldn01.pccwbtn.net                                    195.66.224.167    6      20ms        34ms      0%        50 / 50        13ms / 224ms
hostnoc.ge2-3.br01.phl02.pccwbtn.net                      63.218.31.6        7      91ms        96ms      0%        50 / 50        90ms / 289ms
ec1-10.agg01.sctn01.hostnoc.net                            64.191.19.6        8      92ms        93ms      2%        49 / 50        90ms / 103ms
669619292.hostnoc.net                                      66.96.192.92      9      94ms        92ms      0%        50 / 50        90ms / 100ms


Ignitionnet 01-11-2009 20:26

Re: Latency issues on the VM network?
 
The only issue I can see there is that there's a bit of an increase of ping on hop 6 which isn't under VM's control and is a connection to the London Internet Exchange's peering LAN.

Can't see any real issues apart from that, the 24ms average jump across LINX between VM's network at hop 5 and PCCW's network at hop 6.

Given your report of slow download speeds I think that PCCW need to upgrade their LINX ports, my own tests which go via PCCW's other LINX port also show similar latency jump and slow speed.


All times are GMT. The time now is 11:48.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2026, vBulletin Solutions Inc.
All Posts and Content are © Cable Forum