
Then, over on your “client”, you run the test in the Terminal using the following format: sudo iperf -c Step 4: Run the test from your client mac It will show you a confirmation that looks something like this: Server:~ haus$ iperf -s

On the server, type this in a terminal window: sudo iperf -s It doesn’t matter which machine is which as you’re just deciding which machine is sending the test data and which is receiving it. Once installed you will need to decide which of the macs is going to be the “server” for the test and which will be the “client”. In a Terminal window do: brew install iperf Once you have homebrew you’ll want to install iperf on both macs that will be performing the speed test. The link above contains easy-to-follow instructions for installing HomeBrew if you don’t have it already. It lets you install and run a number of utilities from the command line that didn’t come with your Mac (but should have). HomeBrew is free and bills itself as “the missing package manager for mac”. Iperf is a utility available for macs through HomeBrew. Step 1: Install (or already have) HomeBrew on both computers

You can use HomeBrew and iperf to perform the same kind of test between two macs on your local network. At some point, you’ve probably googled “Internet speed test” to find out how fast your internet connection was.
