Detailed Video of How iOS Multitasking Works

Couple of days back Fraser Speirs developer at Connected Flow and Head of Computing and IT at Cedars School of Excellence had written an excellent article to clear the misconceptions about iOS multitasking, where experts and users believe that removing apps from the multitasking bar helps in improving battery life.

The article resulted in an healthy debate among our readers in the comments section, where some readers highlighted that Speirs explanation made sense only in an ideal world and there have been many occasions (specially in case of a badly written app) where they’ve noticed that killing apps in the background actually helped.

Speirs has now created a nice video to show how iOS multitasking works in more details to clarify some of the doubts. He has used Instruments, which is part of Xcode package to inspect the free memory on the iPad as he ran and suspended various apps.

There are five sections to this video demonstrating:

  • An app going from active to background to suspended
  • Instacast HD requesting extra background time to finish a podcast download
  • TomTom running indefinitely in the background
  • Batman Arkham City Lockdown and Real Racing 2 HD competing for big chunks of device memory
  • Batman Arkham City Lockdown forcing several smaller apps out of memory

You can check out the video below:

Spiers concludes that “killing apps manually is fine as a troubleshooting step but it shouldn’t be part of your daily routine.”

Let us know what you think in the comments below.

[via Fraser Speirs’ blog]