[iOS][Appium] Improve launching simulator performance

Folks, if you experience slow Simulator on CI (esp parallel), this often is due to clipboard sync. Becoming first responder often triggers the clipboard which triggers xpc which then… sometimes stalls. There’s another magic settings that you won’t find on Google that fixes this https://t.co/VpRxxtOzn4
— Peter Steinberger (@steipete) February 12, 2020

https://github.com/WebKit/webkit/blob/master/Tools/Scripts/webkitpy/xcode/simulated_device.py#L413

Ah… It’s interesting. We can disable the sync to improve the launching performance.

https://github.com/appium/appium-ios-simulator/pull/262 is for Appium.

Below commands are system-wide preference.

defaults write com.apple.iphonesimulator PasteboardAutomaticSync -bool false
defaults read com.apple.iphonesimulator PasteboardAutomaticSync

[iOS][Appium] Improve launching simulator performance

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