Is there any known issues in Zen land, my latency has doubled from ~25ms to ~50ms using Speedtest.net and also the Smokeping i have set up for my connection confirms the latency rise of 15ms to 30ms as far as that records. I am on Fastpath and can confirm this hasnt changed via the Telnet information of my router (Netgear DG834GT) plus at the time of the latency increasing my connection hadnt resynced or anything (confirmed via Routerstats text log file).

Anyone?  

 

PS previously being on Interleaved i had a ping of 50ms to speedtest.net!! 

Since early April i'm now on a persistant ~38ms ping via Smokeping, the router stats are still reporting Fastpath. When i was on Interleaved i was only getting 34ms max!! How can i be getting a higher latency on Fastpath than Interleaved?!

Hello,

No.1 Just wondering a) are you on ADSL1 (up to 8megs BT DSL MAX) or have you been regraded to 21CN ADSL2+ ?

No.2 Which phone exchange are you connected too locally?

No.3 Do you know your connections line length?

**When interleaving is turned on "enabled" your line is fully stabilized & controlled by the BT automated line management system (ALMS). If interleaving is turned off (disabled) then stability cannot be guaranteed but this often does seem to increase through put or perceived performance (faster downloads). But the line is more prone to drops or re-sync from what I have understood technically.

**Ping times & latency numbers could be related to your connections (routers) MTU values and so therefore I would certainly carefully check these first before jumping to some other cause of the problem. SEE: http://www.kitz.co.uk for how to adjust the MTU values to get the best results, there is a very nice tutorial on this topic. I found it invaluable.

Ivan 

 

ADSL1

Hoghton

2km ish.

I've been fine up to now and the increased latency didnt occur after a resync or reconnection, it just went up! I'm reluctant to start tweaking the MTU as i know the current setting was working fine and i've changed nothing my end at all.

Hello again,

a) I've checked your BT exchange via Samknows and nothing unusual to report.

b) The Plus Net Exchange checker tool shows the following in relation to your exchange: (now I dont know if this is relevent to your latency increase but it might possibly?).

See below:-

BT Major Service Outages

This page shows more details on a particular BT Service Outage.

: DARWEN MUX 101 : DEGRADED SERVICE
Update Number	1
Detected	05/04/2010 10:24
Started	05/04/2010 10:12
Anticipated Clear Time:	05/04/2010 12:12
Area Codes	01254, 01708

Update Number	2
Detected	05/04/2010 10:24
Started	05/04/2010 10:12
Anticipated Clear Time:	05/04/2010 13:30
Area Codes	01254, 01708

Update Number	FINAL
Detected	05/04/2010 10:24
Started	05/04/2010 10:12
Actual Clear Time:	05/04/2010 12:01
Area Codes	01254, 01708

End

Ivan

 

Entirely possible, although the outage before that was around the date when my latency increased the 2nd time.

The 1st time it increased was looking at the graph around 12-15th March which seems to tie in approx with another outage affecting my number (01254).

 

http://smokeping.eper.net/cgi-bin/smokeping.cgi?target=Residential.ADSL.zen98442