25 авг. 2017 г.

Emulate slow network connection on Mac OS X with Network Link Conditioner


  1. Open https://developer.apple.com/download/more/ (Downloads For Apple Developers)
  2. Find and download Additional Tools for Xcode 8.2 (or other Xcode version you use). Note that there is no need to download/install Xcode itself.
  3. Open Additional Tools - Hardware - double-click on Network Link Conditioner
  4. Agree to install it to Preferences
Available Network Profiles:
  • 100% Loss - drops all incoming and outgoing packets 
  • High Latency DNS - adds 3000 ms DNS delay 
  • Very Bad Network - 1 Mbps 500ms delay downlink, 1 Mbps 500 ms delay uplink, and 10% of incoming and outgoing packets are dropped
  • Edge - 240 Kpbs 400 ms delay downlink, 200 Kbps 440 ms delay uplink
  • 3G - 780 Kpbs 100 ms delay downlink, 330 Kbps 100 ms delay uplink
  • DSL - 2 Mbps 5ms delay downlink, 256 Kbps 5 ms delay uplink
  • LTE - 50 Mbps 50ms delay downlink, 10 Mbps 65 ms delay uplink
  • Wi-Fi - 40 Mbps 1ms delay downlink, 33 Mbps 1 ms delay uplink
  • Wi-Fi 802.11ac - 250 Mbps 1ms delay downlink, 100 Mbps 1 ms delay uplink
Also there is an option to create custom profiles.

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