我使用仪器来跟踪我的应用程序的内存使用情况，在内存监视器中，我发现实际内存低于 36MB，大多数时候只有 32MB，但我仍然在管理器中收到警告内存不足并崩溃。
Incident Identifier: CFEF044E-E839-4DB7-9ED6-E22CD92B9171
CrashReporter Key: 80954447762f1882da7df309d5493cf8647f4c8b
OS Version: iPhone OS 3.2 (7B367)
Date: 2010-08-10 15:21:25 +0800
Free pages: 593
Wired pages: 18705
Purgeable pages: 1664
Largest process: iPad4HB
Processes
Name UUID Count resident pages
iPad4HB <51ec4f748adb8d99e4456ba49644e516> 27182 (jettisoned) (active)
debugserver <6f10136b8d55ad8cbd29c09a402b1f94> 149
syslog_relay <4ceaed776d2df957fa130712f4ef21d0> 70
notification_pro <4c9a7ee0a5bbe160465991228f2d2f2e> 71
lsd <a4d852c1c8da2b3d231bdc90887b52ba> 143
apsd <f655e615956fa9881fd423d762791e7d> 197
notifyd <5e9d5bee7c3eae1c8b494c79eb11406e> 62
BTServer <64e4a6ea6b1240db2331e05a29caa862> 132
CommCenter <97bf297944ac4bde19bcee96dd23bd5f> 191
SpringBoard <c7a5904c12db7b14334a4edaa4cabaa9> 4844 (active)
accessoryd <b4e1403f53e4c7b53b0ec833007f6589> 122
configd <aca9fa3380322669164fd6b1a3864300> 374
fairplayd.K48 <2d997ffca1a568f9c5400ac32d8f0782> 86
locationd <dd1ea88105c62173908ce767db5c4d37> 654
mDNSResponder <820560222d47a1f2a0dce98a7f8a9721> 112
mediaserverd <ea8bac28b06fe3980fdd44b5caceb563> 5931
lockdownd <497fd54c79a680bf29f5d9320f514613> 579
MobileStorageMou <c277b79c2157c4dc5cfc5c3ca35bd5f2> 76
syslogd <66247e305d5c0bf6f1ce1cc950653263> 80
ptpd <83de0f774bd6553d513ae9e19b0f9b56> 233
launchd <66972eee4d865c4383b33d985d22994b> 72
**End**
Tue Aug 10 15:12:05 hokudaiaoniaowangruande-iPad SpringBoard[26] <Warning>: Received memory warning. Level=1
Tue Aug 10 15:12:05 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: Received memory warning. Level=1
Tue Aug 10 15:12:20 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:12:32 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playable
Tue Aug 10 15:12:32 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:12:37 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:13:28 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playable
Tue Aug 10 15:13:28 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:13:44 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:14:11 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playable
Tue Aug 10 15:14:11 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:14:20 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:14:50 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playable
Tue Aug 10 15:14:50 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:14:56 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:15:02 hokudaiaoniaowangruande-iPad mDNSResponder[19] <Error>: ERROR: mDNSPlatformReadTCP - recv: 60 (Operation timed out)
Tue Aug 10 15:16:11 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playable
Tue Aug 10 15:16:11 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:17:33 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:17:44 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playable
Tue Aug 10 15:17:44 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:18:01 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:18:07 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playable
Tue Aug 10 15:18:07 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:18:07 hokudaiaoniaowangruande-iPad configd[24] <Notice>: jetsam: kernel memory event (90), free: 695, active: 1734, inactive: 985, purgeable: 3456, wired: 18656
Tue Aug 10 15:18:07 hokudaiaoniaowangruande-iPad SpringBoard[26] <Warning>: Received memory warning. Level=2
Tue Aug 10 15:18:07 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: Received memory warning. Level=2
Tue Aug 10 15:18:07 hokudaiaoniaowangruande-iPad SpringBoard[26] <Warning>: Memory level is urgent (10%) and there are no background apps to ask to exit.
Tue Aug 10 15:19:07 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:19:15 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playable
Tue Aug 10 15:19:15 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:20:02 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:20:06 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playable
Tue Aug 10 15:20:06 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:21:01 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:21:06 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playable
Tue Aug 10 15:21:06 hokudaiaoniaowangruande-iPad iPad4HB[107] <Warning>: playing
Tue Aug 10 15:21:24 hokudaiaoniaowangruande-iPad configd[24] <Notice>: jetsam: kernel termination snapshot being created
Tue Aug 10 15:21:24 hokudaiaoniaowangruande-iPad com.apple.launchd[1] (UIKitApplication:com.yourcompany.iPad4HB[0x4df4][107]) <Notice>: (UIKitApplication:com.yourcompany.iPad4HB[0x4df4]) Bug: launchd_core_logic.c:3232 (24063):0
Tue Aug 10 15:21:24 hokudaiaoniaowangruande-iPad com.apple.launchd[1] (UIKitApplication:com.yourcompany.iPad4HB[0x4df4][107]) <Notice>: (UIKitApplication:com.yourcompany.iPad4HB[0x4df4]) Bug: launchd_core_logic.c:3309 (24063):0
Tue Aug 10 15:21:24 hokudaiaoniaowangruande-iPad com.apple.debugserver-44[106] <Warning>: 1 [006a/1703]: error: ::read ( 6, 0x2809f4, 1024 ) => -1 err = Bad file descriptor (0x00000009)
Tue Aug 10 15:21:24 hokudaiaoniaowangruande-iPad com.apple.launchd[1] (UIKitApplication:com.yourcompany.iPad4HB[0x4df4][107]) <Notice>: (UIKitApplication:com.yourcompany.iPad4HB[0x4df4]) Bug: launchd_core_logic.c:2650 (24063):10
Tue Aug 10 15:21:24 hokudaiaoniaowangruande-iPad com.apple.launchd[1] (UIKitApplication:com.yourcompany.iPad4HB[0x4df4][107]) <Notice>: (UIKitApplication:com.yourcompany.iPad4HB[0x4df4]) Working around 5020256. Assuming the job crashed.
最佳答案
我认为它准确地告诉您问题是什么:您使用了太多内存。如果操作系统告诉您这一点而您没有采取任何措施，那么它可能(确实)将您的程序从内存中弹出。
您没有发布任何代码，因此不清楚您是否存在内存泄漏或只是使用了太多内存。尝试使用静态分析器(在 Xcode 的构建菜单中)和 Instruments 的 Leaks 部分来检查泄漏。如果没有找到任何内容，那么您可能只需要优化您的应用程序以使用更少的内存。
我不确定您在哪里发现 36Mb 还可以。在第一代设备上，超过 20Mb 时，您将被踢出内存。我认为没有记录任何绝对数字，因此您需要做两件事:在真实设备上进行测试，并在它告诉您使用太多内存时释放尽可能多的内存。
关于iphone - 为什么我的应用程序只使用了大约 36MB 内存，但我仍然收到内存不足警告？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/3438868/