https://discussions.apple.com/thread/6605949?start=0&tstart=0
#!/bin/sh
launchctl unload /System/Library/LaunchDaemons/com.apple.nsurlstoraged.plist
launchctl unload /System/Library/LaunchAgents/com.apple.nsurlsessiond.plist
sudo launchctl unload /System/Library/LaunchDaemons/com.apple.nsurlsessiond.plist
sudo launchctl unload /System/Library/LaunchDaemons/com.apple.nsurlstoraged.plist
nsurlsessiond - taking up all bandwidth!! Help ?
原文：http://www.cnblogs.com/hangj/p/6188328.html