Re: is there any dummy bandwidth shaping script?

2002-12-04 Thread Andrea Borgia
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On Wed, 4 Dec 2002, Patrick Hsieh wrote:

PH>Does wondershaper still consume the full downstream bandwidth  when it is 
PH>shaping the download traffic? 

I'm not sure I understand you here but, if by "consume full bandwidth" you
mean the downlink will work with the shaping activated at the same speed as
without the shaping, then the answer is clearly *no*.

You lose some bandwidth (exactly how much, this is your call), you gain more
reasonable latency. This script has the obvious advantage of being fairly
simple to use, yet gives quite good results. My own experience is that top
speed on a single download clocks at 75KB/s (out of 81 max) and uplink at 14
(out of 16) but, on the flip side, on a fully loaded line the latency is
never more than 2 or 3 times the latency of an idle line (instead of being 2
secs flat, or 50 times as much).

YMMV, though.
Andrea.

P.S.: no CC, please, I'm subscribed.

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Re: is there any dummy bandwidth shaping script?

2002-12-04 Thread martin f krafft
> On Wed, 4 Dec 2002, Patrick Hsieh wrote:
> 
> PH>I've tried shaper in Debian woody but it seems to be only capable of the 
> PH>shaping of outbound traffic. Is there any dummy script or utility that can 
> PH>easily do the inbound/outbound traffic shaping?

there is also the IMQ patches:

  http://luxik.cdi.cz/~devik/qos/imq.htm

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Re: is there any dummy bandwidth shaping script?

2002-12-04 Thread Patrick Hsieh
Does wondershaper still consume the full downstream bandwidth  when it is 
shaping the download traffic? 


Limit download speed


This is slightly trickier as we can't really influence how fast the internet
ships us data. We can however drop packets that are coming in too fast,
which causes TCP/IP to slow down to just the rate we want. Because we don't
want to drop traffic unnecessarily, we configure a 'burst' size we allow at
higher speed.

Now, once we have done this, we have eliminated the downstream queue totally
(except for short bursts), and gain the ability to manage the upstream queue
with all the power Linux offers.




On Wednesday 04 December 2002 18:49, Andrea Borgia wrote:
> On Wed, 4 Dec 2002, Patrick Hsieh wrote:
>
> PH>I've tried shaper in Debian woody but it seems to be only capable of the
> PH>shaping of outbound traffic. Is there any dummy script or utility that
> can PH>easily do the inbound/outbound traffic shaping?
>
> I'm very happy with wondershaper, available at:
> http://lartc.org/wondershaper
>
> You need to tune it a little, basically you're trading a little bandwidth
> in return for lower latency and you have to get the right balance for you
>
> Hope this helps,
> Andrea.

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Re: is there any dummy bandwidth shaping script?

2002-12-04 Thread Andrea Borgia
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On Wed, 4 Dec 2002, Patrick Hsieh wrote:

PH>I've tried shaper in Debian woody but it seems to be only capable of the 
PH>shaping of outbound traffic. Is there any dummy script or utility that can 
PH>easily do the inbound/outbound traffic shaping?

I'm very happy with wondershaper, available at:
http://lartc.org/wondershaper

You need to tune it a little, basically you're trading a little bandwidth
in return for lower latency and you have to get the right balance for you

Hope this helps,
Andrea.

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