Open Radar

 
Summary:
The PTPCamera process (/System/Library/Image Capture/Devices/PTPCamera.app) opens for each connected iOS device. When operating in an Apple Configurator environment, OS X should suppress the Image Capture framework spawning these processes in the interest of reducing memory consumption and creating unnecessary I/O. This can often lead to degraded performance in low memory environments.

Steps to Reproduce:
- Open Apple Configurator
- Connect any given number of iPads or iPods to an OS X 10.8.4 computer via a USB hub or alike hardware.
- Observe the number of PTPCamera processes in Activity Monitor
- For each iOS device, there will be an equivalent PTPCamera process. If there are 30 iPads connected, there will be 30 PTPCamera processes.

Expected Results:
If Apple Configurator is open, the Image Capture framework should suppress PTPCamera to prevent an unnecessary number of processes from begin spawned.

Actual Results:
In environments such as schools and universities where there are trollies of iPads operating using Apple Configurator, the Mac running Apple Configurator is slow, unresponsive or has other performance issues. In our environment, this is a cupboard of 30 iPads connected to a Mac mini (for portability).

Regression:
This has been observed on 21" iMacs (mid 2011) and Mac minis (late 2012), all running OS X 10.8.4 (12E55) and Apple Configurator 1.3 (264).

Notes:
Here is an output of 'ps aux | awk /PTPCamera/' on the affected systems:

ipadadmin      34028   1.0  0.0  2432852    680 s000  S+   11:03am   0:00.00 awk /PTPCamera/
ipadadmin      32642   0.0  0.2  2515144   8216   ??  S     8:07am   0:00.68 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3855277
ipadadmin      32641   0.0  0.2  2515144   8092   ??  S     8:07am   0:00.68 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3851180
ipadadmin      24409   0.0  0.2  2515144   8124   ??  S     4:02pm   0:03.92 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3240727
ipadadmin      24408   0.0  0.2  2515144   8128   ??  S     4:02pm   0:03.96 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3236630
ipadadmin      24407   0.0  0.2  2515144   8236   ??  S     4:02pm   0:03.66 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3232533
ipadadmin      24398   0.0  0.2  2515144   8116   ??  S     4:02pm   0:03.91 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3224339
ipadadmin      24396   0.0  0.2  2515144   8160   ??  S     4:02pm   0:03.87 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3220242
ipadadmin      24394   0.0  0.2  2515668   8088   ??  S     4:02pm   0:03.89 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3216145
ipadadmin      24393   0.0  0.2  2515668   8124   ??  S     4:02pm   0:04.14 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3212048
ipadadmin      24389   0.0  0.2  2515144   8140   ??  S     4:01pm   0:03.94 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3203854
ipadadmin      24385   0.0  0.2  2515144   8248   ??  S     4:01pm   0:03.84 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3199757
ipadadmin      24384   0.0  0.2  2515144   8080   ??  S     4:01pm   0:03.89 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3195660
ipadadmin      24382   0.0  0.2  2515144   8220   ??  S     4:01pm   0:04.00 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3191563
ipadadmin      24379   0.0  0.2  2515144   8104   ??  S     4:01pm   0:03.92 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3187466
ipadadmin      24377   0.0  0.2  2515144   8232   ??  S     4:01pm   0:03.90 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3183369
ipadadmin      24376   0.0  0.2  2515144   8216   ??  S     4:01pm   0:03.90 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3179272
ipadadmin      24372   0.0  0.2  2515668   8216   ??  S     4:01pm   0:03.92 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3171078
ipadadmin      24369   0.0  0.2  2515144   8120   ??  S     4:00pm   0:03.94 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3166981
ipadadmin      24366   0.0  0.2  2515144   8164   ??  S     4:00pm   0:04.17 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3158787
ipadadmin      24360   0.0  0.2  2515144   8200   ??  S     4:00pm   0:03.88 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3142399
ipadadmin      24358   0.0  0.2  2515144   8204   ??  S     4:00pm   0:03.97 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3138302
ipadadmin      24351   0.0  0.2  2515144   8108   ??  S     4:00pm   0:03.88 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3130108
ipadadmin      24343   0.0  0.2  2515144   8216   ??  S     3:59pm   0:03.90 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3113720
ipadadmin      24340   0.0  0.2  2525384   8460   ??  S     3:59pm   0:03.90 /System/Library/Image Capture/Devices/PTPCamera.app/Contents/MacOS/PTPCamera -psn_0_3105526