[X-Unix] Limiting thru put

[Kevin Stevens]

>
> 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
>>
>>
>
> On May 9, 2005, at 05:25, Brent Baisley wrote:
>> 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.

Well, there's a man page for it in Tiger, at least.  That's  
definitely the tool to use - search on the FreeBSD forums, or just  
Google on dummynet for various implementations.

KeS