[X-Unix] Limiting thru put

[Brent Baisley]

I don't think dummeynet is implemented in 10.3 or earlier. I'm only 
basing that on a review of Tiger that stated dummeynet was finally 
implemented. Although, sometimes this means it was always there and 
available, but Apple didn't put a graphical interface on it.


On May 7, 2005, at 9:41 PM, Kevin Stevens wrote:

> On May 7, 2005, at 09:40, Russell McGaha wrote:
>
>> Folks;
>>     I don't know if this is possible; but I thought I'd ask anyway.  
>> Is there any way to limit the throughput/bandwidth usage of an 
>> interface.  I'm limited to Satellite access and there are times [when 
>> I'm trying to get a large file ... say a CD image for instance] when 
>> I'd like to throttle my usage to say 25-30kps; this way I could start 
>> the D/l when I go to bed and it would be finished when I got up.  
>> Currently what happens, is after about an hour of full bandwidth 
>> usage I'm throttled down to 1-4kps [by the provider - Direcway] till 
>> the d/l finishes and I'm idle for a while.
>>     So back to the question; Is there a practical way to limit the 
>> bandwidth usage to a set amount?
>
> QOS support will not help you, as another poster suggested.  You need 
> a bandwidth throttle utility.  What you want is dummynet, which works 
> in conjunction with the ipfw firewall in FreeBSD, but I don't know if 
> it's implemented in OS X.  Google and check around.  Here is a link to 
> another possible solution, though I have no experience with it:  
> http://www.carrafix.com/
>
> KeS
>
-- 
Brent Baisley
Systems Architect
Landover Associates, Inc.
Search & Advisory Services for Advanced Technology Environments
p: 212.759.6400/800.759.0577