has xs4all had problems for the past month? or my config?

[bdladdy]

First, howdy and thanks for reading.

Roughly 4 to 6 weeks ago my mac running Lion became a crash victim with no survivors. With my old install I would routinely see downloads as high as 500Kb/s and generally average 200-300 Kb/s using SASnzbd.

After installing Lion on a fresh drive, my downloads have stagnated to around 20-30kb/s--on a good day. I often see numbers well under <1Kb/s. 20B/s anyone?

I then installed Mountain Lion (PS dont waste your time.) No improvement. I also tried a few different versions of SABndbd hoping to fix the problem.

I read (lightly) the XS4ALL.NL website and saw they had recently experienced "een storing onbetekend" meaning "an unsolved problem". (Mijn Nederlands is niet zo goed.)

My question is this: Has anyone else had similar issues beginning roughly 4-6 weeks ago with XS4all @ newszilla.ipv6.xs4all.nl and/or newszilla6.xs4all.nl (I've tried both), or is something mis-configured on my new OS install? I am running miredo, just as before, to connect my ipv4 to an ipv6 connection. It also does not appear that my provider, centurylink, has started shaping traffic.

Feedback is like well appreciated.

[sander]

It could also be a bad performing teredo / miredo network path. So test the speed of your IPv6 (I'm assuming your OSX has wget):

Code: Select all

wget -6 http://ftp.belnet.be/packages/ubuntu/releases/12.04.1/ubuntu-12.04.1-desktop-i386.iso

Post the output here

Code: Select all

sander@R540:~$ wget -6 http://ftp.belnet.be/packages/ubuntu/releases/12.04.1/ubuntu-12.04.1-desktop-i386.iso
--2012-10-10 22:52:28--  http://ftp.belnet.be/packages/ubuntu/releases/12.04.1/ubuntu-12.04.1-desktop-i386.iso
Resolving ftp.belnet.be (ftp.belnet.be)... 2001:6a8:a40::21
Connecting to ftp.belnet.be (ftp.belnet.be)|2001:6a8:a40::21|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 729067520 (695M) [application/x-iso9660-image]
Saving to: `ubuntu-12.04.1-desktop-i386.iso.2'

 0% [                                       ] 1,157,473   76.0K/s  eta 2h 41m  
 0% [                                       ] 1,602,773   61.0K/s  eta 2h 51m  
 0% [                                       ] 1,839,453   48.3K/s  eta 2h 56m  
 0% [                                       ] 4,230,653   56.9K/s  eta 2h 50m

[bdladdy]

I'm downloading the Xcode package to install wget (1.5 gb--it'll take a while). While that is downloading, i went to http://ipv6-test.com/speedtest/ and ran a speed test:

ipv4:
3.80 Mbit/s
486 Kbytes/s

ipv6:
3.09 Mbit/s
395 Kbytes/s

Definitely slower, but not wildly slower. Suggestion?

[sander]

Looks like a good speed.

Add these newsservers to SABnzbd:

weathergirl-ipv6.tele2.net
reader.ipv6.xsnews.nl

... download a NZB.

EDIT:

As a test, I set newszilla6.xs4all.nl as my only newsserver (3 connections), and started a NZB download. Result: a constant 1.2 MB/s = 12 Mbps from newszilla6 alone ... So nothing wrong with newszilla6.
However, this is over native Ipv6, not miredo/teredo.

EDIT 2:

Test of newszilla6 over miredo/teredo: only 40 - 100 kB/s.

So that is the proof miredo/teredo is the bottle neck. If you want higher speeds, get IPv6 in another way / other tunnel.

EDIT 3:

Newszilla6 over miredo / teredo is now down to 7 kB/s. So I can 100% confirm your newszilla6/teredo experience.

My hypothesis: the miredo / teredo relay provider throttles the News traffic to a certain limit (for example 1Gbps). If there are many news downloaders (like now, at the end of the afternoon), each will get less ...

[bdladdy]

thank you for the solution. I wonder (probably more for myself really) why teredo/mirado worked so well before the hard drive crash. Not really a question I expect anyone to to be able to answer...

[bdladdy]

Ok--always great to share a solution as well as acknowledge the people that got you there. Sander, thank you for taking the time to help me resolve my problem.

I created a tunnel using Hurricane Electric and it was not nearly as difficult as I had expected. If anyone else is using teredo/miredo, please consider watching the following YouTube video:
http://www.youtube.com/watch?v=hM4vCtToqjA

The author covers the configuration in an intense (fast!) 5 minutes.

[sander]

Good. And how is newszilla6's speed via Hurricane?

BTW: mail/call your ISP and ask for IPv6. If enough people ask for it, ISPs will offer it.