The larger the window, the fewer the acknowledgements and the faster the data transfer. If the acknowledgment isn’t received, the sending device will then resend the data. WiFiPerf can be used for iOS-to-iOS testing or. The router’s performance in the close-range test (with the MacBook Air and the Time Capsule in the same room, about nine feet apart) was roughly the same: 458.1 mbps now compared to 451.9 mbps. The app can operate as a client and/or server. TCP (transport control protocol) requires the receiving device to periodically acknowledge the receipt of data, and TCP window size determines how much data can be sent before the sending device must stop and wait for that acknowledgment. Start WiFiPerf (MacOS) Configure WiFiPerf settings Target Server Address: A.A.A.A Server Port: 5202 Run Test A.A.A.A is the ODROID’s IP address This tool is also using the ZAP application and showing a visual result of the statistics. WiFiPerf is a bandwidth performance measurement app for iOS. Lal Shimpi theorizes that OS X is properly dynamically resizing the TCP window size when IPERF is running, but not when actual files are crossing the network.
#WIFIPERF IOS 9 PRO#
In my own testing, I clocked the file-transfer throughput at a meager 140 mbps at close range (eight feet separating the router and client) while copying a 10GB collection of small files from a new MacBook Air to an older MacBook Pro on the same network (both machines were equipped with SSDs). Air Foto Server is the server-side component of the AirFoto iOS application.
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As first reported by Anandtech’s Anand Lal Shimpi, the new MacBook Air, which is outfitted with an 802.11ac Wi-Fi adapter, is radically slower when it comes to transferring real-world files over a wireless connection.