IOS模拟器慢慢与小牛队

Question

I'm the only one to have a slow simulator since the last OSX update (Mavericks)?

• I've tried to reset simulator
• I've tried to switch on/off animation speed in Debug main bar
• I've tried to draw my game with a simple moving quad
• I've tried to run my application on IOS7, IOS6 with Retina and without on the simulator
• My application isn't slow when I run it on an Android device

Simulator is always slow, on the previous OSX version I haven't got any problems :/ (My application is a game using OpenGL ES2)

Thanks!

Answer 1

I met the performance issue on simulator prior to iOS7.

Apple provides the solution in Xcode 5.1 Release Note (Page 4: iOS Simulator)

sudo sysctl -w kern.timer.coalescing_enabled=0

Now the simulator flies!

Answer 2

Well, the iOS 6.1 simulator seems slower in Mavericks. I am still using XCode 4.6.3 and iOS 6.1, but on Mavericks now.

I'm not ready to upgrade my app to using iOS 7 (I'm holding off until I have enough time to handle any issues that may pop up in the upgrade).

A reasonable answer seems to the deleted one, he said that if you do use Mavericks, make sure to use the iOS 7 simulator, as it doesn't seem to have the slowdown issue.

Edit:

Having installed XCode 5, happily there were no problems in the upgrade with my project (I was afraid because of my experience with the Beta). The iOS 7 simulator on Mavericks runs at least as fast as the iOS 6.1 simulator on Lion.

When you're running in the simulator, make sure not to select Retina , because the retina emulator is many times slower than the non-retina emulator. This is likely due to the fact that it has that many more pixels to fill, and the iOS simulators don't use hardware rendering.

Answer 3

Yeah , iOS simulator is very slow on both ios6 and ios7 . there are issues in xcode5 . I just upgrade by xcode to 5.0.2. It is little bit fast than xcode 5 on simulator but still not up to mark.