Estoy haciendo un proyecto de aplicación para iOS en Swift 1.2, usando Cocoapods 0.37.2, Xcode 6.3.2. Después de agregar alrededor de 8 pods en mi proyecto, el tiempo de inicio de la aplicación aumenta considerablemente (alrededor de 10 segundos más) en el dispositivo (iPhone 5). (Nota: el tiempo de inicio significa el momento en que toca el ícono de la aplicación para abrir la aplicación)

Es tan lento que iOS lo termina porque no se inicia a tiempo. La parte superior del registro de bloqueo es la siguiente ...

Application Specific Information: com.tryslowappswift failed to launch in time

Elapsed total CPU time (seconds): 27.720 (user 27.720, system 0.000), 68% CPU 
Elapsed application CPU time (seconds): 0.074, 0% CPU

Thread 0:
0   dyld                            0x1ff0f4c8 ImageLoaderMachOCompressed::rebase(ImageLoader::LinkContext const&) + 456
1   dyld                            0x1ff087be ImageLoader::recursiveRebase(ImageLoader::LinkContext const&) + 174
2   dyld                            0x1ff07dca ImageLoader::link(ImageLoader::LinkContext const&, bool, bool, bool, ImageLoader::RPathChain const&) + 186
3   dyld                            0x1ff012fc dyld::link(ImageLoader*, bool, bool, ImageLoader::RPathChain const&) + 204
4   dyld                            0x1ff022d6 dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**, unsigned long*) + 2362
5   dyld                            0x1fefe222 dyldbootstrap::start(macho_header const*, int, char const**, long, macho_header const*, unsigned long*) + 394
6   dyld                            0x1fefe03c _dyld_start + 60

No thread state (register information) available
...

Puedes probar esto de la siguiente manera:

Nota: he creado un proyecto Swift de ejemplo con todas las configuraciones de podsen mi repositorio github. Simplemente puede clonar y ejecutarlo en su dispositivo y ver el retraso por usted mismo.

Cree un nuevo proyecto en blanco, nada en elapplication:didFinishLaunchingWithOptions: métodoEjecute la aplicación en el dispositivo y vea el inicio de la aplicación muy rápido.Detener. Ahora intenta agregar unPodfile con aproximadamente 8 vainas (no importa si son grandes o pequeñas),pod install.Solo por claridad, este es elPodfile Solía...

Podfile

source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '8.0'
use_frameworks! # required for Swift pods

pod 'Alamofire', '~> 1.2.1'
pod 'NPReachability', '~> 0.2.0'
pod 'ActionSheetPicker-3.0', '~> 1.6.1'
pod 'SDWebImage', '~> 3.7.2'
pod 'KVNProgress', '~> 2.2.1'
pod 'KeychainAccess'
pod 'JazzHands', '~> 0.2.1'
pod 'DGActivityIndicatorView'

Luego, vuelva a ejecutar el dispositivo. Esta vez notarás elMás de 10 segundos de retraso, incluso antesapplication:didFinishLaunchingWithOptions: Se llama al método. Noimport, sin archivos de encabezado de puente, simplemente instale el pod en el proyecto y ralentiza el inicio(- ¡¡¡meme de chico de rabia !!! ---)

Sospecho que esto tiene que ver con Swift 1.2, así que probé en un proyecto Objective-C, pero sigo experimentando el mismo retraso. Parece suceder justo después de una instalación de pod normal, no tengo idea de cómo puedo optimizar o solucionar esto. :(

ACTUALIZACIÓN 1 (27 de julio de 2015):

Como señaló Bryan Musial, intenté agregar banderas en la configuración de mi esquema para registrar el tiempo de carga de cada biblioteca. Ejecuto esto en mi iPhone 5. Aquí está el resultado en la ventana 'Dispositivos' de Xcode:

Jul 27 13:56:02 Hlung SpringBoard[43] <Warning>: Installed apps did change.
  Added: {(
  )}
  Removed: {(
  )}
  Modified: {(
      "th.in.hlung.TrySlowAppSwift"
  )}
Jul 27 13:56:03 Hlung com.apple.debugserver-@(#)PROGRAM:debugserver  PROJECT:debugserver-320.2.89
  [4964] <Warning>: debugserver-@(#)PROGRAM:debugserver  PROJECT:debugserver-320.2.89
   for armv7.
Jul 27 13:56:03 Hlung com.apple.debugserver-@(#)PROGRAM:debugserver  PROJECT:debugserver-320.2.89
  [4964] <Warning>: Connecting to com.apple.debugserver service...
Jul 27 13:56:03 Hlung com.apple.debugserver-@(#)PROGRAM:debugserver  PROJECT:debugserver-320.2.89
  [4964] <Warning>: Got a connection, waiting for process information for launching or attaching.
Jul 27 13:56:03 Hlung com.apple.debugserver-@(#)PROGRAM:debugserver  PROJECT:debugserver-320.2.89
  [4964] <Warning>: About to launch process for bundle ID: th.in.hlung.TrySlowAppSwift
Jul 27 13:56:03 Hlung com.apple.xpc.launchd[1] (UIKitApplication:th.in.hlung.TrySlowAppSwift[0x578b]) <Error>: The DisableASLR key is no longer respected. Please remove it.
Jul 27 13:56:03 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:04 Hlung kernel[0] <Notice>: xpcproxy[4965] Container: /private/var/mobile/Containers/Data/Application/6C097544-9C1E-4B73-ACF8-43701FDFC8C2 (sandbox)
Jul 27 13:56:04 Hlung com.apple.debugserver-@(#)PROGRAM:debugserver  PROJECT:debugserver-320.2.89
  [4964] <Warning>: In completion handler, got pid for bundle id, pid: 4965.
Jul 27 13:56:04 Hlung com.apple.debugserver-@(#)PROGRAM:debugserver  PROJECT:debugserver-320.2.89
  [4964] <Warning>: Got a connection, launched process /private/var/mobile/Containers/Bundle/Application/9F233F77-63BC-479E-827A-F08C964DE38C/TrySlowAppSwift.app (pid = 4965).
Jul 27 13:56:04 Hlung SpringBoard[43] <Warning>: LICreateIconForImage passed NULL CGImageRef image
Jul 27 13:56:04 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:04 Hlung locationd[4692] <Notice>: Gesture EnabledForTopCLient: 0, EnabledInDaemonSettings: 0
Jul 27 13:56:05 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:05 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:06 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:07 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:08 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:08 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:09 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:10 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:10 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:11 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:12 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:12 Hlung MobileMail[139] <Warning>: Attempting to badge the application icon but haven't received permission from the user to badge the application
Jul 27 13:56:12 Hlung MobileMail[139] <Warning>: Attempting to badge the application icon but haven't received permission from the user to badge the application
Jul 27 13:56:12 Hlung MobileMail[139] <Warning>: Attempting to badge the application icon but haven't received permission from the user to badge the application
Jul 27 13:56:12 Hlung MobileMail[139] <Warning>: Attempting to badge the application icon but haven't received permission from the user to badge the application
Jul 27 13:56:12 Hlung MobileMail[139] <Warning>: Attempting to badge the application icon but haven't received permission from the user to badge the application
Jul 27 13:56:12 Hlung MobileMail[139] <Warning>: Attempting to badge the application icon but haven't received permission from the user to badge the application
Jul 27 13:56:12 Hlung MobileMail[139] <Warning>: Attempting to badge the application icon but haven't received permission from the user to badge the application
Jul 27 13:56:12 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:13 Hlung assistant_service[4931] <Warning>: the local store doesn't allow tasks and we have no default calendar :(
Jul 27 13:56:13 Hlung assistant_service[4931] <Warning>: Error getting NanoAppRegistry workspace info: Error Domain=NSCocoaErrorDomain Code=4099 "The operation couldn’t be completed. (Cocoa error 4099.)" (The connection to service named com.apple.nanoappregistry.workspace was invalidated.) UserInfo=0x17ebf490 {NSDebugDescription=The connection to service named com.apple.nanoappregistry.workspace was invalidated.}
Jul 27 13:56:13 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:14 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:14 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:15 Hlung amfid[4918] <Error>:  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: dyld: loaded: /usr/lib/libcupolicy.dylib
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: dyld: loaded: /usr/lib/libTelephonyUtilDynamic.dylib
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total time: 13.1 seconds (100.0%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total images loaded:  149 (128 from dyld shared cache)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total segments mapped: 60, into 1700 pages with 112 pages pre-fetched
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total images loading time: 12.8 seconds (97.9%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total dtrace DOF registration time: 0.17 milliseconds (0.0%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total rebase fixups:  32,622
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total rebase fixups time: 34.74 milliseconds (0.2%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total binding fixups: 121,320
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total binding fixups time: 116.36 milliseconds (0.8%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total weak binding fixups time: 5.10 milliseconds (0.0%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total bindings lazily fixed up: 0 of 0
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total initializer time: 118.97 milliseconds (0.9%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>:     libSystem.B.dylib 
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: : 37.57 milliseconds (0.2%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: libBacktraceRecording.dylib 
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: : 0.77 milliseconds (0.0%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>:        libc++.1.dylib 
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: : 0.09 milliseconds (0.0%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>:       libobjc.A.dylib 
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: : 0.10 milliseconds (0.0%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>:        CoreFoundation 
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: : 0.88 milliseconds (0.0%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>:                vImage 
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: : 0.02 milliseconds (0.0%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>:      libGLImage.dylib 
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: : 0.12 milliseconds (0.0%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: libFosl_dynamic.dylib 
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: : 0.04 milliseconds (0.0%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>:             CoreImage 
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: : 0.02 milliseconds (0.0%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>:    libswiftCore.dylib 
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: : 2.14 milliseconds (0.0%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total symbol trie searches:    43149
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total symbol table binary searches:    0
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total images defining weak symbols:  18
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total images using weak symbols:  44

La parte más importante es probablemente esta:

Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total time: 13.1 seconds (100.0%)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total images loaded:  149 (128 from dyld shared cache)
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total segments mapped: 60, into 1700 pages with 112 pages pre-fetched
Jul 27 13:56:17 Hlung TrySlowAppSwift[4965] <Notice>: total images loading time: 12.8 seconds (97.9%)

Se necesita un todo12,8 segundos (97,9%) para cargar las imágenes. Pero este proyecto vacío no tiene ningún archivo de imagen. Hojeé las cápsulas y creo que tampoco tienen una cantidad significativa de archivos de imagen. Todavía estoy atrapado aquí.

En comparación con el resultado de Bryan, el mismo código, pero se ejecuta en el iPhone 6. El porcentaje de tiempo de carga de las imágenes también es alto.

Jul 22 16:44:02 iPhone-6 TrySlowAppSwift[939] <Notice>: total time: 1.9 seconds (100.0%)
Jul 22 16:44:02 iPhone-6 TrySlowAppSwift[939] <Notice>: total images loaded:  148 (127 from dyld shared cache)
Jul 22 16:44:02 iPhone-6 TrySlowAppSwift[939] <Notice>: total segments mapped: 60, into 1756 pages with 164 pages pre-fetched
Jul 22 16:44:02 iPhone-6 TrySlowAppSwift[939] <Notice>: total images loading time: 1.5 seconds (81.6%)

Además, hay otra pista. Durante la pantalla de inicio, hay varias líneas de registro que dicen<Error>: SecTrustEvaluate [leaf CriticalExtensions IssuerCommonName]. Buscar en Google solo revela que se trata de un problema de aplicación empresarial, que no me ayuda mucho.

En general, todavía estoy atascado. T_T