The iOS 9 results are in!

Here are the results for my iPhone 5S running iOS 9.0, they are stated below the benchmark iOS 8.4.1 results from my last post.

The benchmark results for iOS 8.4.1

  1. Reboot time: 36.30 s, 35.76 s.
  2. Memory
    Before testing.  Used: 13.7 GB; Free: 13:0 GB.
    After testing.  Used: 13.6 GB; Free: 13.1 GB.
  3. Webpage load times.
    1. Facebook: 4.50 s, 3.60 s.
    2. BBC: 2.42 s, 1.86 s.
    3. Apple: 2.63 s, 2.46 s.
  4. Photo viewer load: 1.65 s, 1.63 s.
  5. App Store load: 3.71 s, 3.83 s.
  6. Evernote camera: 2.76 s, 2.71 s.
  7. iMessage: 2.02 s, 1.83 s.
  8. Inbox: 3.76 s, 3.83 s.
  9. Tweet from LCP: 2.76 s, 2.43 s.
  10. Evernote audio from LCP: 2.85 s, 2.90 s.
  11. Waze: 6.10 s, 3.22 s.
  12. Slack login: 10.17 s, 10.92 s.
  13. Hotspot: 13.87 s, 6.38 s, 2.83 s.
  14. Scanbot download: 30.90 s, 27.48 s.

The results for iOS 9.0

  1. Reboot time: 39.43 s, 39.23 s.
  2. Memory
    Before testing.  Used: 14.0 GB; Free: 12.3 GB.
    After testing.  Used: 13.7 GB; Free: 12.6 GB.
  3. Webpage load times.
    1. Facebook: 4.06 s, 3.70 s.
    2. BBC: 3.26 s, 3.45 s.
    3. Apple: 3.68 s, 2.90 s.
  4. Photo viewer load: 1.55 s, 1.06 s.
  5. App Store load: 3.10 s, 2.92 s.
  6. Evernote camera: 3.03 s, 2.98 s.
  7. iMessage: 2.85 s, 2.75 s.
  8. Inbox: 5.22 s, 3.48 s.
  9. Tweet from LCP: 3.82 s, 3.23 s.
  10. Evernote audio from LCP: 4.23 s, 3.95 s.
  11. Waze: 3.86 s, 4.00 s.
  12. Slack login: 14.10 s, 11.56 s.
  13. Hotspot: 13.20 s, 3.76 s, 3.53 s.
  14. Scanbot download: 24.30 s, 22.52 s.
It is worth noting that I ran the tests fairly but the conditions were not as strict as might be the case in a formal lab test – I don’t claim that they are super accurate and reliable.  But they are reflective of genuine uses of an iPhone by an average person.
On the whole the test results reveal neither a significant decrease or increase in performance.  It seems that the new OS takes up more memory – up to 500 MB more.  The results do suggest that even the core functionality of the OS has not been conclusively improved as some are better and some are worse, i.e. app downloads and installs, setting up hotspots, reboots and web browsing.  General usage of my phone since the update has been positive, I like the new features available and they run fine.
Here’s a full comparison table of results and a couple of graphs.  The third run of setting up a hotspot was not included in the table.
 iPhone 5S iOS 9 - table
No Significant Changes
iPhone 5S iOS 9 - times graph
More Time Increases Than Reductions.
iPhone 5S iOS 9 - percentage graph
The above table and graphs are available in a Google spreadsheet here.
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