Weird latency problem

Steveocee · 20 Nov 2012 at 22:56

Hi all,
I'm being baffled by my network connectivity :-/

Using speedtest.net by wireless from my PC I seem to get an average ping to closest server of about 30ms and then roughly about 30/40mb throughput in speed.

Using a cat5e cable on same site, same server I get a ping of 60ms but up to 100mb speed (i understand cabled connection is better) but why are my ping times suffering so much?

I have also tried with a spare cat6 cable I have and also currently i have cat 6 to zyxel switch, then cat 6 to PC.

So whenever I am cabled I'm getting ping of about 60ms but wireless I get 30ms

How the heck is that happening!?!?

Steveocee · 20 Nov 2012 at 23:04

Annoyingly, I get this from my Ubuntu box connected to the same zyxel switch

Steveocee · 20 Nov 2012 at 23:05

My main PC off the zyxel switch

zipp0r · 20 Nov 2012 at 23:11

ping times are always rubbish on speedtest.
try a cmd prompt and pinging www.bbc.co.uk

Steveocee · 20 Nov 2012 at 23:14

From Linux
PING www.bbc.net.uk (212.58.246.90) 56(84) bytes of data.
64 bytes from bbc-vip011.cwwtf.bbc.co.uk (212.58.246.90): icmp_req=1 ttl=54 time=21.5 ms
64 bytes from bbc-vip011.cwwtf.bbc.co.uk (212.58.246.90): icmp_req=2 ttl=54 time=17.1 ms
64 bytes from bbc-vip011.cwwtf.bbc.co.uk (212.58.246.90): icmp_req=3 ttl=54 time=25.8 ms
64 bytes from bbc-vip011.cwwtf.bbc.co.uk (212.58.246.90): icmp_req=4 ttl=54 time=33.4 ms
64 bytes from bbc-vip011.cwwtf.bbc.co.uk (212.58.246.90): icmp_req=5 ttl=54 time=14.3 ms
64 bytes from bbc-vip011.cwwtf.bbc.co.uk (212.58.246.90): icmp_req=6 ttl=54 time=18.0 ms
64 bytes from bbc-vip011.cwwtf.bbc.co.uk (212.58.246.90): icmp_req=7 ttl=54 time=15.1 ms
^C
--- www.bbc.net.uk ping statistics ---
7 packets transmitted, 7 received, 0% packet loss, time 6004ms
rtt min/avg/max/mdev = 14.324/20.780/33.434/6.331 ms

Steveocee · 20 Nov 2012 at 23:16

From main PC

C:\Users\Steven>ping www.bbc.co.uk -t

Pinging www.bbc.net.uk [212.58.246.90] with 32 bytes of data:
Reply from 212.58.246.90: bytes=32 time=54ms TTL=54
Reply from 212.58.246.90: bytes=32 time=14ms TTL=54
Reply from 212.58.246.90: bytes=32 time=19ms TTL=54
Reply from 212.58.246.90: bytes=32 time=26ms TTL=54
Reply from 212.58.246.90: bytes=32 time=35ms TTL=54
Reply from 212.58.246.90: bytes=32 time=17ms TTL=54
Reply from 212.58.246.90: bytes=32 time=46ms TTL=54
Reply from 212.58.246.90: bytes=32 time=17ms TTL=54
Reply from 212.58.246.90: bytes=32 time=20ms TTL=54
Reply from 212.58.246.90: bytes=32 time=38ms TTL=54
Reply from 212.58.246.90: bytes=32 time=24ms TTL=54

Ping statistics for 212.58.246.90:
Packets: Sent = 11, Received = 11, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 14ms, Maximum = 54ms, Average = 28ms

Steveocee · 20 Nov 2012 at 23:17

Just ran a pingplotter form the main PC and it is registering AVG of about 20ms to BBC so guessing like you said, speedtest.net's ping test is rubbish

KIA · 21 Nov 2012 at 10:08

Steveocee said:
From main PC

Pinging www.bbc.net.uk [212.58.246.90] with 32 bytes of data:
Reply from 212.58.246.90: bytes=32 time=54ms TTL=54

That's why. 64ms doesn't seem impossible.