{"id":461,"date":"2025-05-08T09:11:01","date_gmt":"2025-05-08T09:11:01","guid":{"rendered":"https:\/\/boochlin.com\/?p=461"},"modified":"2025-06-10T08:06:48","modified_gmt":"2025-06-10T08:06:48","slug":"android-%e7%88%9b%e8%a3%9d%e7%bd%ae%e6%83%b3%e8%b7%91%e4%ba%ba%e8%87%89%e8%be%a8%e8%ad%981-%e8%a9%95%e4%bc%b0%e7%ac%ac%e4%b8%80","status":"publish","type":"post","link":"https:\/\/boochlin.com\/?p=461","title":{"rendered":"Android \u721b\u88dd\u7f6e\u60f3\u8dd1\u4eba\u81c9\u8fa8\u8b581-\u8a55\u4f30\u7b2c\u4e00"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/boochlin.com\/wp-content\/uploads\/2025\/05\/ChatGPT-Image-May-22-2025-05_35_01-AM.png\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/boochlin.com\/wp-content\/uploads\/2025\/05\/ChatGPT-Image-May-22-2025-05_35_01-AM.png\" alt=\"\" class=\"wp-image-563\" style=\"width:384px;height:auto\" srcset=\"https:\/\/boochlin.com\/wp-content\/uploads\/2025\/05\/ChatGPT-Image-May-22-2025-05_35_01-AM.png 1024w, https:\/\/boochlin.com\/wp-content\/uploads\/2025\/05\/ChatGPT-Image-May-22-2025-05_35_01-AM-300x300.png 300w, https:\/\/boochlin.com\/wp-content\/uploads\/2025\/05\/ChatGPT-Image-May-22-2025-05_35_01-AM-150x150.png 150w, https:\/\/boochlin.com\/wp-content\/uploads\/2025\/05\/ChatGPT-Image-May-22-2025-05_35_01-AM-768x768.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>\u9019\u4e00\u7bc7\u539f\u672c\u53ea\u4f54\u6211\u672c\u4f86\u898f\u5283\u7684\u7cfb\u5217\u6587\u7ae0\u5c0f\u5c0f\u7684\u7bc7\u5e45\uff0c\u53ef\u662f\u8d8a\u5beb\u8d8a\u6df1\uff0c\u4f46\u4e0d\u60f3\u4e00\u6b21\u5c31\u62c9\u5230\u90a3\u9ebc\u6df1\uff0c\u4f86\u56de\u4fee\u6539\u6c92\u6709\u60f3\u6cd5\uff0c\u5206\u6210\u57fa\u790e\u8ddf\u9032\u968e\u5c31\u597d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9084\u6c92\u8a55\u4f30\uff0c\u5225\u8ac7\u512a\u5316<\/h2>\n\n\n\n<p>\u6211\u5011\u4e0d\u662f\u5728\u505a\u624b\u6a5f App\uff0c\u4e0d\u9700\u8981\u5207 app\u3001\u6ed1\u756b\u9762\u3001\u9ad4\u9a57\u9806\u9806\u7684\u3002 \u6211\u5011\u505a\u7684\u662f\u4e00\u53f0\u4eba\u81c9\u8fa8\u8b58\u6a5f\uff0c\u958b\u6a5f\u5c31\u8dd1\u6a21\u578b\uff0c\u6a21\u578b\u5c31\u8981\u6d3b\u3002<\/p>\n\n\n\n<p>\u800c\u4f60\u624b\u4e0a\u662f\u4e00\u53f0 2GB RAM \u7684 Android 10 \u88dd\u7f6e\uff0c\u7cfb\u7d71\u4e00\u958b\u6a5f\u5c31\u5403\u6389 1.3GB\uff0c\u5269\u4e0b\u4e0d\u5230 700MB \u80fd\u7528\u3002 \u4f60\u653e\u500b\u96d9\u93e1\u982d stream\u3001TFLite \u6a21\u578b\u3001\u518d\u52a0\u6d3b\u9ad4\u6aa2\u6e2c\uff0c\u9435\u5b9a\u7206\u70b8\u3002 \u4f46\u7206\u4e0d\u7206\uff0c\u4e0d\u662f\u770b\u5fc3\u60c5\uff0c\u662f\u770b\u6578\u64da\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5168\u6a5f\u8a18\u61b6\u9ad4\u73fe\u6cc1\uff1a\u8a72\u5148\u770b\u7684\u5c31\u662f\u9019\u500b<\/h2>\n\n\n\n<p>\u4f60\u6253\u958b\u6a5f\u5668\uff0c\u7b2c\u4e00\u500b\u8a72\u8dd1\u7684\u5c31\u4e0d\u662f\u4ec0\u9ebc profiler\uff0c\u4e5f\u4e0d\u662f\u4f60 app \u7684\u8a18\u61b6\u9ad4\u5206\u4f48\uff0c\u800c\u662f\uff1a<strong>\u6574\u53f0\u6a5f\u5668\u9084\u5269\u591a\u5c11\u8a18\u61b6\u9ad4\u53ef\u6d3b\uff1f<\/strong><\/p>\n\n\n\n<p>\u76f4\u63a5\u4f86\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>adb shell dumpsys meminfo\n<\/code><\/pre>\n\n\n\n<p>\u88e1\u9762\u6700\u4e0a\u9762\u90a3\u5340\uff0c\u5c31\u544a\u8a34\u4f60\u6574\u9ad4\u72c0\u6cc1\uff0c\u50cf\u9019\u6a23\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Total RAM: 1,909,104K (status normal)\nFree RAM:   456,339K (  140,995K cached pss +   251,112K cached kernel +    64,232K free)\nUsed RAM: 1,503,496K (1,301,496K used pss +   202,000K kernel)\nLost RAM:   125,250K\n    ZRAM:    44,240K physical used for   225,168K in swap (  524,284K total swap)\n     KSM:    26,640K saved from shared       828K              20,964K unshared;     6,096K\n\n<\/code><\/pre>\n\n\n\n<ul>\n<li>Total RAM\uff1a\u9019\u6a5f\u5668\u5c31\u662f\u6a19\u6e96 2GB\uff0c\u80fd\u52d5\u7684\u5927\u6982\u5c31 1.9GB<\/li>\n\n\n\n<li>Free RAM\uff1a\u5176\u5be6\u53ea\u6709 64MB \u771f\u7a7a\uff0c\u5176\u4ed6\u90fd\u662f cached\uff0c\u4e00\u63db context \u5c31\u6c92\u4e86<\/li>\n\n\n\n<li>Used RAM\uff1a1.5GB\uff0c\u5e7e\u4e4e\u70b8\u6eff<\/li>\n\n\n\n<li>ZRAM\uff1a\u7528 44MB \u58d3\u7e2e\u51fa 225MB swap\uff0c\u58d3\u7e2e\u6bd4\u8d85\u904e 5 \u500d\uff0c\u662f\u73fe\u5728\u552f\u4e00\u80fd\u9760\u7684\u5f48\u6027\u5340<\/li>\n\n\n\n<li>KSM\uff1a\u6551\u4e86 26MB\uff0c\u96d6\u7136\u5c0f\uff0c\u4f46\u80fd\u7701\u5c31\u7701<\/li>\n\n\n\n<li>Lost RAM\uff1a125MB \u88ab\u4fdd\u7559\u3001\u788e\u7247\u5316\u6216\u88ab ION\/GPU \u5403\u6389\uff0c\u56de\u4e0d\u4f86\u4e86<\/li>\n<\/ul>\n\n\n\n<p>\u4f60\u5982\u679c\u770b\u5230 Free RAM \u5c0f\u65bc 100MB\uff0c\u90a3\u5c31\u77e5\u9053\uff0c<strong>\u4e00\u958b TFLite \u6a21\u578b\u99ac\u4e0a OOM \u662f\u5e38\u614b<\/strong>\u3002<\/p>\n\n\n\n<p>\u9019\u500b\u6307\u4ee4\uff0c\u8acb\u4f60\u5728\u6bcf\u6b21\u6539\u5b8c\u7cfb\u7d71\u3001\u6539\u5b8c\u670d\u52d9\u3001\u958b\u6a5f\u5f8c\u7b2c\u4e00\u4ef6\u4e8b\u5c31\u8dd1\u5b83\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Android Studio Profiler\uff1a\u770b\u8da8\u52e2\u7528\u7684<\/h2>\n\n\n\n<ul>\n<li><strong>\u8a18\u61b6\u9ad4\u4f7f\u7528\u5716\uff08Memory Timeline\uff09<\/strong>\uff1a\u5c55\u793a Java\u3001Native\u3001Graphics\u3001Stack\u3001Code\u3001Others \u7684\u5373\u6642\u5206\u4f48\u8207\u8b8a\u5316\u3002\u70ba\u80fd\u770b\u51fa camera stream \u958b\u555f\u5f8c Graphics \u662f\u5426\u4e0d\u65b7\u7d2f\u7a4d\u3001TFLite \u63a8\u7406\u6642 Native memory \u662f\u5426\u7206\u885d\u3002<\/li>\n\n\n\n<li><strong>GC \u6d3b\u52d5\u6a19\u8a18\uff08Garbage Collection Events\uff09<\/strong>\uff1a\u986f\u793a GC \u767c\u751f\u6642\u9593\u9ede\uff0c\u5354\u52a9\u4f60\u5224\u65b7\u662f\u5426\u56e0\u70ba\u8a18\u61b6\u9ad4\u5403\u7dca\u5c0e\u81f4\u7cfb\u7d71\u983b\u7e41\u56de\u6536\u3002\u7576\u6211\u5011\u5728\u6a21\u578b\u63a8\u7406\u6216\u591a\u6b21\u8fa8\u8b58\u6642\u51fa\u73fe\u5927\u91cf GC\uff0c\u5c31\u8981\u8003\u616e\u662f\u5426\u6709 Bitmap \u6c92\u91cb\u653e\u3002<\/li>\n\n\n\n<li><strong>Heap Dump\uff1a\u5141\u8a31\u4f60\u5728\u4efb\u610f\u6642\u9593\u9ede\u7522\u751f heap dump \u4e26\u6aa2\u67e5\u6709\u54ea\u4e9b\u985e\u5225\u3001\u7269\u4ef6\u5be6\u4f8b\u8207\u8a18\u61b6\u9ad4\u4f54\u7528\u3002\u9019\u500b\u662f\u6211\u975e\u5e38\u5e38\u7528\u7684\u529f\u80fd\uff0c\u5be6\u6230\u4e0a\u6211\u7528hprof \u627e\u51fa\u975e\u5e38\u591a\u53ef\u4ee5\u512a\u5316\u7684\u90e8\u5206\uff0c\u5f88\u591a\u90e8\u5206\u90fd\u662fByteArray \u7d2f\u7a4d\uff1acamera callback \u6216 image preprocess \u4e0d\u65b7 new buffer \u6c92\u56de\u6536\uff0c\u9019\u90e8\u5206\u5982\u679c\u672a\u4f86\u6709\u7a7a\u6211\u6703\u5c08\u9580\u5beb\u4e00\u7bc7\u600e\u9ebc\u73a9\u7684\u6587\u7ae0<\/strong><\/li>\n\n\n\n<li><strong>Allocation Tracker\uff08\u914d\u7f6e\u8ffd\u8e64\uff09<\/strong>\uff1a\u53ef\u4ee5\u89c0\u5bdf Java Object \u4f55\u6642\u88ab\u5efa\u7acb\u3001\u8ab0\u5efa\u7acb\u7684\uff0c\u4ee5\u53ca\u662f\u5426\u6709\u91cb\u653e\u3002\u5728\u4f7f\u7528 camera callback \u6216 Tensor \u8f38\u5165\u524d\u8655\u7406\u6d41\u7a0b\u6642\uff0c\u9019\u529f\u80fd\u53ef\u4ee5\u8ffd\u8e64\u662f\u5426\u4e00\u76f4\u5728 new ByteBuffer \u537b\u6c92\u88ab\u91cb\u653e\u3002<\/li>\n\n\n\n<li><strong>\u5be6\u9ad4\u914d\u7f6e\u8207\u91cb\u653e\u4e8b\u4ef6\u8ffd\u8e64\uff08Allocation Timeline\uff09<\/strong>\uff1a\u5728 Allocation Tracking \u958b\u555f\u6642\u53ef\u5206\u6790\u8a18\u61b6\u9ad4\u788e\u7247\u8207\u91cd\u8907\u914d\u7f6e\u884c\u70ba\u3002\u6211\u5011\u5e38\u7528\u4f86\u89c0\u5bdf \u5404\u7a2e\u5716\u7247\u7684\u524d\u8655\u7406\u662f\u5426\u90fd\u91cd\u5efa\u8f38\u5165\u7d50\u69cb\u5c24\u5176\u662f MAT\uff0c\u9020\u6210\u8a18\u61b6\u9ad4\u53cd\u8986\u9707\u76ea\u3002<\/li>\n\n\n\n<li><\/li>\n<\/ul>\n\n\n\n<p>\u9019\u4e9b\u529f\u80fd\u642d\u914d\u4f7f\u7528\uff0c\u53ef\u4ee5\u6709\u6548\u5354\u52a9\u4f60\uff1a<\/p>\n\n\n\n<ul>\n<li>\u521d\u6b65\u8fa8\u8b58\u8a18\u61b6\u9ad4\u6210\u9577\u8da8\u52e2\uff08\u4f8b\u5982 buffer \u6c92\u91cb\u653e\u3001\u6a21\u578b init \u5f8c\u672a\u6e05\u7406\uff09<\/li>\n\n\n\n<li>\u627e\u51fa\u8a18\u61b6\u9ad4\u7206\u885d\u7684\u5340\u6bb5\uff08\u63a8\u7406\u77ac\u9593\u7206\u6389\uff09<\/li>\n\n\n\n<li>\u5206\u6790\u91cd\u8907\u914d\u7f6e\u8207\u904e\u5ea6 GC \u7684\u7a0b\u5f0f\u908f\u8f2f\u932f\u8aa4<\/li>\n\n\n\n<li>\u6355\u6349 bitmap\u3001texture\u3001native library \u6c92\u91cb\u653e\u5c0e\u81f4\u7684 native memory \u7a4d\u58d3<\/li>\n<\/ul>\n\n\n\n<p>\u9069\u5408\u521d\u671f\u89c0\u5bdf\uff0c\u4e5f\u65b9\u4fbf\u756b\u9762 Demo \u7d66\u8001\u95c6\u770b\u771f\u7684\u5403\u5f88\u5147<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/boochlin.com\/wp-content\/uploads\/2025\/03\/Android-\u8a18\u61b6\u9ad4\u8abf\u6559-1.png\"><img decoding=\"async\" width=\"432\" height=\"535\" src=\"https:\/\/boochlin.com\/wp-content\/uploads\/2025\/03\/Android-\u8a18\u61b6\u9ad4\u8abf\u6559-1.png\" alt=\"\" class=\"wp-image-471\" srcset=\"https:\/\/boochlin.com\/wp-content\/uploads\/2025\/03\/Android-\u8a18\u61b6\u9ad4\u8abf\u6559-1.png 432w, https:\/\/boochlin.com\/wp-content\/uploads\/2025\/03\/Android-\u8a18\u61b6\u9ad4\u8abf\u6559-1-242x300.png 242w\" sizes=\"(max-width: 432px) 100vw, 432px\" \/><\/a><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\uff1a<\/p>\n\n\n\n<ul>\n<li>\ud83d\udfeb Graphics\uff08\u68d5\u8272\u5340\u584a\uff09\u4f54\u7528\u8d85\u904e\u4e00\u534a\uff0c\u6301\u7e8c\u4e0a\u5347<\/li>\n\n\n\n<li>\ud83d\udd35 Native\uff08\u6df1\u85cd\uff09\u7a69\u5b9a\u6210\u9577<\/li>\n\n\n\n<li>\ud83d\udfe6 Java Heap\uff08\u6dfa\u85cd\uff09\u53ea\u6709\u5c11\u91cf\u4f54\u7528<\/li>\n\n\n\n<li>\u6709\u5e7e\u6bb5\u8a18\u61b6\u9ad4\u300c\u65b7\u5d16\u5f0f\u4e0b\u964d\u300d\uff0c\u53ef\u80fd\u662f GC \u6216 LMKD \u89f8\u767c\u6e05\u9664<\/li>\n\n\n\n<li><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">dumpsys meminfo\uff1a\u7cbe\u7b97\u8a18\u61b6\u9ad4\u7d50\u69cb\uff08\u4e0d\u8981\u53ea\u770b\u7e3d\u91cf\uff09<\/h2>\n\n\n\n<p>\u9019\u662f\u6211\u6bcf\u6b21\u958b\u6a5f\u5f8c\u90fd\u6703\u8dd1\u7684\u6307\u4ee4\uff0c\u5c0d\u61c9\u5be6\u969b app \u7684\u8a18\u61b6\u9ad4\u4f54\u7528\u7d50\u69cb\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>adb shell dumpsys meminfo com.your.app\n<\/code><\/pre>\n\n\n\n<p>\u7bc4\u4f8b\u8f38\u51fa\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Applications Memory Usage (in Kilobytes):\nUptime: 3758295 Realtime: 3758295\n\n** MEMINFO in pid 12345 &#91;com.your.app] **\n                   Pss  Private  Private  Swapped     Heap     Heap     Heap\n                 Total    Dirty    Clean    Dirty     Size    Alloc     Free\n                ------   ------   ------   ------   ------   ------   ------\n  Native Heap     43264    41800        0        0    49152    45000     8000\n  Dalvik Heap     92160    90500        0        0   102400    98000     4300\n Dalvik Other     10240    10000        0        0\n        Stack      2048     2048        0        0\n       Ashmem      3072     3072        0        0\n    Other dev        12       12        0        0\n     .so mmap     15360     1024     8192        0\n    .apk mmap      2048        0     2048        0\n    .ttf mmap      1024        0     1024        0\n    .dex mmap      8192        0     8192        0\n    Other mmap     4096       64     2048        0\n    EGL mtrack     2048     2048        0        0\n     GL mtrack     4096     4096        0        0\n      Unknown     20480    20480        0        0\n\n        TOTAL    205600   192096    20408        0\n\n App Summary\n                       Pss(KB)\n            Java Heap:    90500\n          Native Heap:    41800\n                 Code:    21504\n                Stack:     2048\n             Graphics:     6144\n        Private Other:    30496\n               System:    12308\n\n           TOTAL PSS:   205600       TOTAL RSS:   194560\n<\/code><\/pre>\n\n\n\n<p>\u95dc\u6ce8\u91cd\u9ede\uff1a<\/p>\n\n\n\n<p><\/p>\n\n\n\n<ul>\n<li><strong>Native Heap: 41800K Private Dirty (\u7d04 41MB)<\/strong>\uff1aC\/C++ buffer\u3001\u6a21\u578b\u3001bitmap \u7b49\u4f54\u7528\u3002<code>Private Dirty<\/code> \u662f\u5224\u65b7 Native \u8a18\u61b6\u9ad4\u6d29\u6f0f\u7684\u95dc\u9375\u6307\u6a19\uff0c\u6301\u7e8c\u589e\u9577\u4e14\u6c92\u6709\u91cb\u653e\u5f88\u53ef\u80fd\u5c31\u662f\u6d29\u6f0f\u3002 <\/li>\n\n\n\n<li><strong>Dalvik Heap: 90500K Private Dirty (\u7d04 88MB)<\/strong>\uff1aJava \u7269\u4ef6\u7a7a\u9593\uff0c\u5982\u679c\u9019\u500b\u5340\u57df\u6301\u7e8c\u589e\u9577\u4e26\u63a5\u8fd1 Heap Size\uff0c\u5f88\u5bb9\u6613\u89f8\u767c OOM (Out Of Memory) \u932f\u8aa4\u3002 <\/li>\n\n\n\n<li><strong>TOTAL PSS: 205600K (\u7d04 200MB)<\/strong>\uff1a\u61c9\u7528\u7a0b\u5f0f\u5be6\u969b\u4f54\u7528\u7684\u5be6\u9ad4\u8a18\u61b6\u9ad4\uff08\u5305\u542b\u8207\u5176\u4ed6\u9032\u7a0b\u5171\u4eab\u7684\u90e8\u5206\u7684\u52a0\u6b0a\u503c\uff09<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u4e0a\u9762\u7684\u90e8\u5206\u5176\u5be6\u4e5f\u883b\u5920\u7528\u7684\uff0c\u5982\u679c\u4f60\u662f\u4e00\u540dsenior\u4ee5\u4e0a\u7684\u5de5\u7a0b\u5e2b\uff0c\u6211\u76f8\u4fe1\u4e5f\u65e9\u5df2\u7d93\u77e5\u9053\uff0c\u4f46\u57fa\u672c\u529f\u6c38\u9060\u662f\u6700\u91cd\u8981\u7684\uff0c\u4e0b\u9762\u7684\u90e8\u5206\u8aaa\u5be6\u5728\u771f\u7684\u662f\u56e0\u70ba\u88dd\u7f6e\u5be6\u5728\u592a\u721b\uff0c\u7136\u5f8c\u6211\u5c0d\u9019\u4e9b\u7d30\u89e3\u4e5f\u5f88\u559c\u6b61\u624d\u6703\u9032\u968e\u53bb\u770b<\/p>\n\n\n\n<p>\u5404\u4f4d\u6709\u6c92\u6709\u597d\u5947 dumpsys meminfo \u7684\u6578\u64da\u600e\u9ebc\u51fa\u73fe\u7684\uff0c\u7d44\u6210\u4e0a\u6709\u5f88\u591a\u4f86\u6e90\uff0c\u5176\u4e2d\u4e00\u500b\u662f \/proc\/process-id\/smaps<\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">smaps\uff1a\u8a18\u61b6\u9ad4\u986f\u5fae\u93e1<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>adb shell cat \/proc\/$(pidof com.your.app)\/smaps\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>7f3e0000-7f3f0000 rw-p 00000000 00:00 0\nSize:               64 kB      # \u8a72\u8a18\u61b6\u9ad4\u5340\u584a\u7e3d\u5927\u5c0f\nRss:                60 kB      # \u5be6\u969b\u4f54\u7528\u7684\u5be6\u9ad4\u8a18\u61b6\u9ad4\uff08\u672a\u88ab swap \u51fa\u53bb\uff09\nPss:                30 kB      # \u5171\u4eab\u52a0\u6b0a\u5f8c\u7684\u8a18\u61b6\u9ad4\u4f54\u7528\u503c\nShared_Dirty:        0 kB      # \u88ab\u5171\u4eab\u3001\u4e14\u6709\u5beb\u5165\u904e\u7684\u8a18\u61b6\u9ad4\u91cf\nPrivate_Dirty:      60 kB      # \u5c08\u5c6c\u8a72 process \u4e14\u6709\u5beb\u5165\u904e\u7684\u8a18\u61b6\u9ad4\uff0c\u8a18\u61b6\u9ad4\u6d29\u6f0f\u7684\u91cd\u8981\u6307\u6a19\nReferenced:         60 kB      # \u6700\u8fd1\u88ab\u5b58\u53d6\u904e\u7684\u8a18\u61b6\u9ad4\u9801\u6578\nAnonymous:          60 kB      # \u533f\u540d\u8a18\u61b6\u9ad4\uff08\u901a\u5e38\u662f malloc \u6216 new \u5206\u914d\u7684 buffer\uff09\nVmFlags: rd wr mr mw me ac     # \u8a72\u6bb5\u5340\u57df\u7684\u8a18\u61b6\u9ad4\u6b0a\u9650\u8207\u7279\u6027 (rd: \u8b80, wr: \u5beb, ex: \u57f7\u884c, sh: \u5171\u4eab, pr: \u79c1\u6709, sw: swap)\n\n\n\u9019\u4e9b\u8cc7\u8a0a\u53ef\u4ee5\u9032\u4e00\u6b65\u78ba\u8a8d\uff0c\u4e5f\u80fd\u63a8\u8ad6\u9019\u7a2e\u721b\u88dd\u7f6e\u4e0a\u6700\u5e38\u9047\u5230\u7684\u5e7e\u7a2e\u72c0\u6cc1\uff1a\u3002<\/code><\/pre>\n\n\n\n<ul>\n<li>camera buffer \/ image pipeline \u6c92\u6709\u91cb\u653e \u2192 Anonymous \u5340\u584a\u66b4\u885d\uff0c\u8a18\u61b6\u9ad4\u7206\u4e86\u9084\u627e\u4e0d\u5230\u4f86\u6e90\u3002<\/li>\n\n\n\n<li>\u6a21\u578b pre-load \u2192 .so\u3001.apk\u3001.dex \u6bb5\u6301\u7e8c\u4f54\u7528\uff0c\u4f46\u5176\u5be6\u53ea\u7528\u4e86\u5176\u4e2d\u5e7e\u500b\u6a21\u578b\u3002<\/li>\n\n\n\n<li>AI \u6a21\u578b\u63a8\u7406\u6642\u7528 malloc \u5206\u914d \u2192 Private_Dirty \u5340\u584a\u5927\u4f46\u6c92\u56de\u6536\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4ea4\u53c9\u9a57\u8b49\uff1a\u5982\u679c\u4f60\u5728 smaps \u88e1\u770b\u5230 100MB \u7684 buffer\uff0c\u4f46 profiler \u4e0a\u5b8c\u5168\u6c92\u986f\u793a\uff0c\u90a3\u57fa\u672c\u4e0a\u5c31\u662f native \/ GPU \u5077\u5403<\/p>\n\n\n\n<p>\u539f\u672c\u7b2c\u4e00\u7248\u5728\u5beb\u7684\u6642\u5019\uff0c\u662f\u6709\u63d0\u4f9b\u81ea\u5df1\u5e38\u7528\u7684\u6307\u4ee4\uff0c\u4f46\u6211\u767c\u73fe\u6709\u500b\u5927\u795e Jianwu Gao \u4f5c\u7684\u66f4\u597d\uff0c\u9019\u908a\u53ef\u4ee5\u88dc\u4e0a\uff0c\u6211\u76ee\u524d\u770b\u5230\u6700\u597d\u7528\u7684smap \u6574\u5408 android \u7684\u8a18\u61b6\u9ad4\u5206\u6790\u8173\u672c Android-App-Memory-Analysis<\/p>\n\n\n\n<p><a href=\"https:\/\/github.com\/Gracker\/Android-App-Memory-Analysis\/tree\/master\">https:\/\/github.com\/Gracker\/Android-App-Memory-Analysis\/tree\/master<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">\u70ba\u4ec0\u9ebc\u9019\u6a23\u89c0\u5bdf\u6bd4\u8f03\u9760\u8b5c\uff1f<\/h2>\n\n\n\n<p>\u9019\u4e9b\u65b9\u6cd5\u4e0d\u662f\u55ae\u9ede\u770b\u6578\u64da\uff0c\u800c\u662f\u8b93\u4f60\u80fd\u56de\u7b54\u9019\u4e9b\u95dc\u9375\u554f\u984c\uff1a<\/p>\n\n\n\n<ul>\n<li>\u662f\u54ea\u7a2e\u8a18\u61b6\u9ad4\u5403\u6700\u591a\uff1f\uff08Profiler \/ dumpsys\uff09<\/li>\n\n\n\n<li>\u662f\u54ea\u6bb5\u7a0b\u5f0f\u6c92\u91cb\u653e\uff1f\uff08Heap dump \/ LeakCanary\uff09<\/li>\n\n\n\n<li>\u662f\u54ea\u500b buffer \u5403\u5149\u8a18\u61b6\u9ad4\uff1f\uff08smaps \/ ion \/ kgsl\uff09<\/li>\n\n\n\n<li>\u7cfb\u7d71\u5230\u5e95\u6703\u4e0d\u6703\u6bba process\uff1f\uff08PSI \/ LMKD\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u53ea\u6709\u641e\u6e05\u695a\u9019\u5e7e\u4ef6\u4e8b\uff0c\u4f60\u624d\u77e5\u9053\u8a72\u780d\u8ab0\u3001\u8a72\u8b93\u8ab0\u7559\u4e0b\u4f86\u3002<\/p>\n\n\n\n<p>\u6c92\u641e\u6e05\u695a\u8ab0\u5728\u5403\u8a18\u61b6\u9ad4\uff0c\u505a\u518d\u591a\u512a\u5316\u4e5f\u53ea\u662f\u76f2\u4fee\u76f2\u6539\u3002<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/developer.android.com\/topic\/performance\/memory\">Android \u958b\u767c\u8a18\u61b6\u9ad4\u7ba1\u7406\u5b98\u65b9\u6587\u4ef6<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.youtube.com\/playlist?list=PLOU2XLYxmsIJGErt5rrCqaSGTMyyqNt2H\">Google Android Performance Patterns\uff08YouTube \u7cfb\u5217\uff09<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/developer.android.com\/studio\/profile\/memory-profiler\">Android Studio Memory Profiler \u5b98\u65b9\u8aaa\u660e<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/android.googlesource.com\/platform\/frameworks\/base\/+\/master\/services\/core\/java\/com\/android\/server\/am\/MemInfoDumpTruck.java\">\u6df1\u5165\u7406\u89e3 dumpsys meminfo<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/elinux.org\/Android_ION\">ion memory allocator \u6e90\u78bc\u8207\u8aaa\u660e<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/android.googlesource.com\/kernel\/msm\/+\/refs\/heads\/android-msm-coral-4.14-android11\/drivers\/gpu\/msm\/kgsl\">kgsl GPU Memory Debug<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u9084\u6c92\u8a55\u4f30\uff0c\u5225\u8ac7\u512a\u5316<\/p>\n<p>\u6211\u5011\u4e0d\u662f\u5728\u505a\u624b\u6a5f App\uff0c\u4e0d\u9700\u8981\u5207 app\u3001\u6ed1\u756b\u9762\u3001\u9ad4\u9a57\u9806\u9806\u7684\u3002 \u6211\u5011\u505a\u7684\u662f\u4e00\u53f0\u4eba\u81c9\u8fa8\u8b58\u6a5f\uff0c\u958b\u6a5f\u5c31\u8dd1\u6a21\u578b\uff0c\u6a21\u578b\u5c31\u8981\u6d3b\u3002<\/p>\n<p>\u800c\u4f60\u624b\u4e0a\u662f\u4e00\u53f0 2GB RAM \u7684 Android 10 \u88dd\u7f6e\uff0c\u7cfb\u7d71\u4e00\u958b\u6a5f\u5c31\u5403\u6389 1.3GB\uff0c\u5269\u4e0b\u4e0d\u5230 700MB \u80fd\u7528\u3002 \u4f60\u653e\u500b\u96d9\u93e1\u982d stream\u3001TFLite \u6a21\u578b\u3001\u518d\u52a0\u6d3b\u9ad4\u6aa2\u6e2c\uff0c\u9435\u5b9a\u7206\u70b8\u3002 \u4f46\u7206\u4e0d\u7206\uff0c\u4e0d\u662f\u770b\u5fc3\u60c5\uff0c\u662f\u770b\u6578\u64da\u3002<\/p>\n","protected":false},"author":1,"featured_media":563,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[80],"tags":[],"_links":{"self":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts\/461"}],"collection":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=461"}],"version-history":[{"count":23,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts\/461\/revisions"}],"predecessor-version":[{"id":565,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts\/461\/revisions\/565"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/media\/563"}],"wp:attachment":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=461"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=461"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}