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Possible Duplicate:
How to simulate slow internet connections on the mac

For testing purposes I would like to choke the performance of the network on my OS X 10.8.2 machine. I have currently Little Snitch installed, which I can block access to certain hosts with... however I would like to lower the network performance as if I would be using an 56k6 old-school modem.

How can I accomplish this?

Community
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Paul Peelen
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2 Answers2

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Although you can use command-line tools to do this, Apple has a developer tool that allows you to do what you are talking about from a control panel. There are presets available, or you can set your own performance limits. The tool is called "Network Link Conditioner" and is available on Apple's developer download site with a package called "Hardware IO Tools for Xcode".

Here is a blog post discussing the tool (with screen shots): http://mattgemmell.com/2011/07/25/network-link-conditioner-in-lion/

David Rouse
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  • I just found about that. Thanks. The link, however, is https://developer.apple.com/downloads/index.action?name=for%20Xcode%20-# – Paul Peelen Nov 21 '12 at 13:07
  • +1 for the link to the article - feel free to add that to the existing answers on the main thread for this. It's a very good article. – bmike Nov 21 '12 at 15:38
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After some more searching and talking with a friend of mine, I found the Hardware I/O tools for XCode which has the Network Link Conditioner which does this kind of things.

https://developer.apple.com/downloads/index.action?name=for%20Xcode%20-#

Paul Peelen
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