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Author Topic: Bandwidth usage problems  (Read 3612 times)

myth

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Bandwidth usage problems
« on: August 06, 2011, 01:18:27 AM »

Hi folks,
now I have a pretty cool connection, but aMule doesn't really use it (also some others).

When I use FTP I get download of 1200 KiB/s (yes KiloBytes), and in Upload also 1000-1100 KiB/s!
If I use aMule (with a lot of upload slots, changing also the slotspeed of course) I can't get it over 40 KiB/s, rarely it jumps to 100 KiB/s for some second.

The bandwidth is available. My ISP says they do NOT filter anything, just VOIP gets higher priority.
Now if I download from Netload.in (premium acc) or for ex. Ubuntu http download it stacks at 200-300 max!

So the only one working with full speed is FTP. Is there a way to let aMule's traffic look like FTP?
Or does anybody know why this is like this?

I'm just trying with aMule on port 55555/55556, but no change till yet.
Everytime I mail my ISP they just tell me that everything is ok with my line and they're not filtering anything! :/

Ideas?
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btkaos

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Re: Bandwidth usage problems
« Reply #1 on: August 06, 2011, 04:11:23 AM »

If I use aMule (with a lot of upload slots, changing also the slotspeed of course) I can't get it over 40 KiB/s, rarely it jumps to 100 KiB/s for some second.
Hi myth, with current amule trunk I can reach sustancially higher speeds (both upload and download) so I would investigate other likely causes.
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myth

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Re: Bandwidth usage problems
« Reply #2 on: August 06, 2011, 10:18:29 AM »

Well, but has anybody an idea where to investigate?
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Stu Redman

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Re: Bandwidth usage problems
« Reply #3 on: August 06, 2011, 05:15:12 PM »

Download: depends mainly on the speed others are uploading
Upload: same, to a lesser degree. What slot allocation have you set? Are even people queued up for your uploads?
How much CPU is aMule taking?
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myth

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Re: Bandwidth usage problems
« Reply #4 on: August 06, 2011, 07:52:15 PM »

CPU usage is normal, about 5% (DualCore E6400).
It's not aMule's problem i know this.
I tried various slot allocations, but no way.

I was just asking here, hoping I can find someone with networking experience.
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myth

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Re: Bandwidth usage problems
« Reply #5 on: August 08, 2011, 10:18:44 PM »

Ok, it's definitely my ISP...

They answered me that FTP is not used a lot, so I have lots of free bandwidth with it. All other traffic (http, etc) is very used and this way results in lower speed.

Any way to mask aMule's traffic as FTP? :P
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Stu Redman

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Re: Bandwidth usage problems
« Reply #6 on: August 08, 2011, 10:37:16 PM »

Use standard FTP ports ?  ;)

And I think that's rubbish. There are no protocol dependent bandwidth channels in an IP network.
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myth

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Re: Bandwidth usage problems
« Reply #7 on: August 09, 2011, 09:07:55 PM »

So how could they prioritize VoIP traffic?

And how can some ISP filter ed2k traffic?

FTP ports? The strange thing: When I download a file with Filezilla it doesn't use 21 or similar!
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Stu Redman

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Re: Bandwidth usage problems
« Reply #8 on: August 09, 2011, 10:36:31 PM »

Ports and packet inspection I should guess. They prioritize one up and one down. What I meant is there is no static reserve of x Mbit for any protocol with a certain reserve left or so.
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myth

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Re: Bandwidth usage problems
« Reply #9 on: August 10, 2011, 05:28:27 PM »

Ah, that's klar :)

Hmm...packet inspection...a way to get rid of it?
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Stu Redman

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Re: Bandwidth usage problems
« Reply #10 on: August 10, 2011, 09:02:56 PM »

Encryption can help sometimes, but only to a certain degree. I think you can identify ed2k connections even so. You can probably say easily if an IP belongs to a professional or to a private user. if (private to private && !Voip) -> P2P -> throttle. Simple as that.  :(
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The image of mother goddess, lying dormant in the eyes of the dead, the sheaf of the corn is broken, end the harvest, throw the dead on the pyre -- Iron Maiden, Isle of Avalon

myth

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Re: Bandwidth usage problems
« Reply #11 on: August 10, 2011, 09:15:52 PM »

The strange thing is HTTP traffic throttled as well... :P
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iz0bbz

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Re: Bandwidth usage problems
« Reply #12 on: August 18, 2011, 09:29:07 AM »

What I meant is there is no static reserve of x Mbit for any protocol with a certain reserve left or so.
OT... but ISPs use professional routers and switches which can prioritize or limit traffic depending on network services.
I mean, don't think at TCP/UDP ports. Such products can interpret traffic contents (i.e. application level contents) basing on application level 'signatures', regardless of ports used.
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myth

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Re: Bandwidth usage problems
« Reply #13 on: August 18, 2011, 12:41:47 PM »

So you mean what Stu already said? Packet inspection? That's sad...
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stoatwblr

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Re: Bandwidth usage problems
« Reply #14 on: August 19, 2011, 03:09:28 AM »

Double check the WAN MTU on your router (assuming a broadband connection)

A lot of DSL/Cable broadband uses PPPoE as the protocol and that drops the effective  MTU to 1423 bytes. Setting it higher (usually the default is 1500) can have the effects described
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