[TelstraClear] Aggressive p2p traffic shaping on TelstraClear?

Forums › One NZ (including Farmside) › [TelstraClear] Aggressive p2p traffic shaping on TelstraClear?

spacedog

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#69841 13-Oct-2010 21:59

I've been on Telstra broadband for many years now and I have always regarded their service as having some of the best throughput and latency available in New Zealand.

Up until about 2-3 months ago, I was able to happily run a p2p client and download torrents AND continue to use my connection with little difficulty. Throughput might be affected, but sites would still load and online games would still work.

However, something seems to have changed in the last few months. If I have an active bit torrent download running, virtually all other web services fail. Web pages on SSL begin to fail, online games completely fall over and even POP/SMTP services begin to fail and timeout.

The problem seems to largely be a timeout issue.

Has anyone else observed this change?

freitasm

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#391560 13-Oct-2010 22:04

This is not the case. TelstraClear does not apply any management.

What router are you using?
Are you sure this router has a fast enough CPU to process all packets for all open connections?
Have you correctly configured the router tables (DD-WRT requires some changes for example)?
Have you added any new software to your PC?
Have you changed your torrent application to accept more connections or use more connection per torrent?
Have you added a switch to your network?
Have you changed OS?
Have you added any new PC to your network?
Are you forwarding ports correctly?

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spacedog

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#391578 13-Oct-2010 22:41

Absolutely nothing has changed on my side.

I'm using the same RTA1025W as always. No new clients, no new OS, no new hardware.

Quinny

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#391644 14-Oct-2010 09:02

Does the client do mutli threadding to get better speed. This kills my gaming so I avoid it.

spacedog

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#391656 14-Oct-2010 09:35

using uTorrent...haven't really changed anything with uTorrent that I can think

Quinny

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#391669 14-Oct-2010 09:45

Yeah I use utorrent. Maybe check the number of multiple connections in options, setup guide. Drop it down. Also check the upload slots and limits. If these are too high it floods your connection.

mentalinc

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#391673 14-Oct-2010 10:06

Also if upload is fixed too low it will reduce your download limit.

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ohpersven

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#392182 15-Oct-2010 12:33

May want to test with another router.
heavy p2p'ing can kill routers.
What router do you have/how old is it?

Ragnor

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#392308 15-Oct-2010 16:16

If you saturate your available upload or download with torrent traffic then yes other forms of traffic will become unresponsive.

When I say your "available upload or download" I don't mean your line rate but the real world throughput you get at the time of day on your connection.

Real world throughput will always vary especially on residential connections which are shared network best effort.

The typical solution is to limit the upload/download speed in utorrent or use QoS on your router to prioritise web and other traffic over p2p.

In the past you might not have been downloading from enough good seeders to give you a download rate that saturated your connection OR whatever rate you are downloading torrents at is maxing your available throughput at the time.

Quick fix:
Do international speedtest to the US at peak time, get the result in Mbit/s (Megabit) and convert to KB/s (Kilobyte not Kilobit), put a limit in utorrent that's about 50-100KB/s lower than this value.

freitasm

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#392321 15-Oct-2010 16:46

I still think it's a router issue, couple with saturation in number of connections.

If you have a router with QoS settings, make sure to use it. Make sure to limit the torrent client number of connections and banwidth.

Much attention to be paid in the difference between MB/s (megabytes per second) and Mb (megabits per second), KB (kilobytes per second) and Kb (kilobits per second). Remember that a byte is eight times a bit. If you use these in the wrong way your torrent client may be using a lot more bandwidth than it should.

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spacedog

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#393377 18-Oct-2010 22:38

After further review....it's looking like something else is going on...I'm seeing packet loss and this is the best result I can get speedtest'ing to Auckland

https://www.speedtest.net/result/994765798.png

That's with me using my rta1025w in half-bridged mode. So no router tables, NAT or competing network clients to get in the way.

My line is synching at 5312/944 Kbps.

It would be extremely unlikely that my adsl modem was failing and causing the slowdown if it is STILL synching at 5000+, right? My connection doesn't drop, my line synch has always been around 5mbps and now it seems I can't even yank down a well-seeded torrent faster than 2mbps. And the speedtest just looks awful....