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I dont understand latency, help!

Steek
Grafter
Posts: 103
Registered: 17-03-2012

I dont understand latency, help!

Ok so in my old house I was 4.4km away from my exchange and got 32ms ping. Now I am 1.2km from the exchange but with 55ms ping. Do I have some type of fault on my line or something?
I did have the pro add-on but after finding out it does literally nothing in regards of ping times I removed it. Interleaving is off I believe. If I chose to upgrade to Fibre (30mb) will this drop my latency at all?
Everything wired.
Thanks, and some stats if you wish to know.
DSP Firmware Version A2pB025f.d22k
DMT Status No Defect
Operational Mode ADSL2+
Upstream 440
Downstream 15192
SNR Margin(Upstream) 28.8
SNR Margin(Downstream) 4.0
Line Attenuation(Upstream) 17.8
Line Attenuation(Downstream) 32.0
6 REPLIES
Community Gaffer
Community Gaffer
Posts: 5,269
Thanks: 577
Fixes: 5
Registered: 04-04-2007

Re: I dont understand latency, help!

Latency is how long it takes for a server to respond to you.  It is different depending on which server you are checking.  55ms latency is pretty good tbh.  Where are you seeing that number from?
It might be worth doing a traceroute to the server that you are measuring the latency from, that might highlight something.
Kelly Dorset
Broadband Service Manager
Community Veteran
Posts: 19,101
Thanks: 443
Fixes: 21
Registered: 31-08-2007

Re: I dont understand latency, help!

Are you absolutely sure Interleaving is off, both down and upstream - it may be worth checking! If you can display error figures from your modem/router line stats, that may give you a good idea.
Try pinging bbc.co.uk and ntp.plus.net and see what results you get.
Steek
Grafter
Posts: 103
Registered: 17-03-2012

Re: I dont understand latency, help!

Thanks for the replies.
I am doing these tests on pingtest.net and cmd, I only moved 10 min down the road so not sure why I have a higher ping time, and yes I agree 55 is pretty good is most situations but I am all for gaming so it doesn't help me at all. I am not 100 percent sure about the interleaving, maybe someone can check it for me please? I am doing these tests to the same server as I did in my other house by the way.
I have done two traces to bbc.co.uk and ntp.plus.net

Tracing route to bbc.co.uk [212.58.241.131]
over a maximum of 30 hops:
 1     1 ms     2 ms     1 ms  home.gateway.home.gateway [192.168.1.254]
 2    83 ms    54 ms    52 ms  lo0-central1.pcl-ag04.plus.net [195.166.128.241]
 3   250 ms    51 ms    52 ms  gi1-12-412.pcl-gw02.plus.net [84.92.6.226]
 4   222 ms    53 ms    52 ms  po4.pcl-gw01.plus.net [212.159.1.128]
 5    52 ms    51 ms    52 ms  ae3.pcl-cr01.plus.net [195.166.129.40]
 6    52 ms    51 ms    51 ms  ae1.ptw-cr01.plus.net [195.166.129.0]
 7    52 ms    51 ms    51 ms  kingston-gw.thdo.bbc.co.uk [212.58.239.6]
 8     *        *        *     Request timed out.
 9    51 ms    52 ms    52 ms  ae1.er01.rbsov.bbc.co.uk [132.185.254.46]
10    52 ms    50 ms    51 ms  132.185.255.134
11    53 ms    52 ms    52 ms  212.58.241.131
Trace complete.
Tracing route to ntp.plus.net [212.159.13.50]
over a maximum of 30 hops:
 1     1 ms     1 ms     1 ms  home.gateway.home.gateway [192.168.1.254]
 2    57 ms    63 ms    52 ms  lo0-central1.pcl-ag04.plus.net [195.166.128.241]
 3    51 ms    52 ms    52 ms  gi1-12-412.pcl-gw02.plus.net [84.92.6.226]
 4    52 ms    52 ms    52 ms  vl63.pcl-lb01.plus.net [212.159.2.252]
 5    51 ms    51 ms    52 ms  cdns02.plus.net [212.159.13.50]
Trace complete.
http://www.pingtest.net/result/64026476.png
GrahamC
Grafter
Posts: 257
Registered: 19-07-2009

Re: I dont understand latency, help!

Try hopping to a different gateway and check your pings. Maybe pcl-ag04 is slow today.
Steek
Grafter
Posts: 103
Registered: 17-03-2012

Re: I dont understand latency, help!

Can someone check if my interleaving is on please? If so can you turn it off? Thanks
tomxlisa
Grafter
Posts: 213
Registered: 20-04-2012

Re: I dont understand latency, help!

This is my ping test.
C:\>ping ntp.plus.net
Pinging ntp.plus.net [212.159.13.49] with 32 bytes of data:
Reply from 212.159.13.49: bytes=32 time=14ms TTL=252
Reply from 212.159.13.49: bytes=32 time=13ms TTL=252
Reply from 212.159.13.49: bytes=32 time=14ms TTL=252
Reply from 212.159.13.49: bytes=32 time=14ms TTL=252
Ping statistics for 212.159.13.49:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 13ms, Maximum = 14ms, Average = 13ms