Fluctuating speeds on 50Mb - up to 75Mb!! [Archive]

HSp8

26-07-2009, 19:37

speeds seem all over the place today

whilst downloading from Astraweb, speeds of 20Mb, then after a few seconds, up to 45Mb, and then a few seconds later up to 75Mb, and then down again

any idea what's going on? tried rebooting router/modem, but makes no difference.

In the Brighton area

xocemp

26-07-2009, 19:44

Can you run this from command line prompt please.

ping -f -n 200 -l 1450 bbc.co.uk

Kymmy

26-07-2009, 22:22

When downloading from Astraweb I don't suppose the 75Mb is when you're downloading headers?? Just that Astraweb supports header compression so it appears to be going faster than your line is capable off ;)

I get 45-50Mb on headers with my 10Mb connection :)

HSp8

26-07-2009, 22:33

Hi xoxemp,

Thanks for that - result below (the high speeds have stopped now and it seems to be 25-35Mbps - normally get a fairly constant 44Mbps)

Pinging bbc.co.uk [212.58.224.138] with 1450 bytes of data:

Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=23ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=33ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=46ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=19ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=47ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=41ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=34ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=55ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=44ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=15ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=14ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=19ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=34ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=49ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=14ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=50ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=42ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=65ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=39ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=27ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=21ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=24ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=45ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=19ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=22ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=27ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=19ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=50ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=23ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=19ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=32ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=38ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=15ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=20ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=22ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=37ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=19ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=43ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=25ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=35ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=25ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=26ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=54ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=15ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=20ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=43ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=15ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=33ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=38ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=21ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=25ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=36ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=30ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=30ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=27ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=81ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=52ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=33ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=24ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=23ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=56ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=37ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=23ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=49ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=51ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=36ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=39ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=15ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=19ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=37ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=49ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=47ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=47ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=33ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=41ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=39ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=23ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=56ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=29ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=25ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=15ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=23ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=15ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=15ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=40ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=15ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=27ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=47ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=44ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=21ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=26ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=24ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=25ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=19ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=47ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=23ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=26ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=26ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=36ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=25ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=65ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=43ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=41ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=30ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=19ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=19ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=15ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=20ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=28ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=42ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=38ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=80ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=66ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=26ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=32ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=15ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=26ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=25ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=38ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=22ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=18ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=21ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=16ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=17ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=27ms TTL=119
Reply from 212.58.224.138: bytes=1450 time=27ms TTL=119

Ping statistics for 212.58.224.138:
Packets: Sent = 200, Received = 200, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 14ms, Maximum = 81ms, Average = 26ms

xocemp

26-07-2009, 22:57

Interesting, I expected to see framing ramp but not fluctuate.
Would you click on the connection link at the top of the page please, or you can click this link Connection (http://www.cableforum.co.uk/board/misc.php?do=connection), I'm interested to know which cmts/uBR you connect to, just copy/paste the details please.

You may want to remove your IP address.
xx-xxx-xxx-xxx.zone6.bethere.co.uk

HSp8

27-07-2009, 19:22

here you go

cpc2-brig15-2-0-xxxxxxxxxxx.cable.virginmedia.com

Mod edit (Kymmy): removed Cust number

Kymmy

27-07-2009, 20:01

I still think it's simply compressed headers on Astraweb ;)

Richy99

28-07-2009, 22:27

depends on the client and whether they support the compression command