{"id":418,"date":"2025-03-25T10:12:30","date_gmt":"2025-03-25T10:12:30","guid":{"rendered":"https:\/\/boochlin.com\/?p=418"},"modified":"2026-08-15T09:46:46","modified_gmt":"2026-08-15T09:46:46","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%983-%e8%a8%98%e6%86%b6%e9%ab%94%e5%84%aa%e5%8c%96-zramswapksm%ef%bc%8ezram-%e6%9c%80%e5%a5%bd%e7%94%a8","status":"publish","type":"post","link":"https:\/\/boochlin.com\/?p=418","title":{"rendered":"Android \u721b\u88dd\u7f6e\u60f3\u8dd1\u4eba\u81c9\u8fa8\u8b583- \u7cfb\u7d71\u512a\u5316-ZRAM,SWAP,KSM\uff0c\u64f4\u5f35\u6700\u5927\u503c"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/boochlin.com\/wp-content\/uploads\/2025\/05\/ChatGPT-Image-May-22-2025-05_20_38-AM.png\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/boochlin.com\/wp-content\/uploads\/2025\/05\/ChatGPT-Image-May-22-2025-05_20_38-AM-1024x683.png\" alt=\"\" class=\"wp-image-555\" srcset=\"https:\/\/boochlin.com\/wp-content\/uploads\/2025\/05\/ChatGPT-Image-May-22-2025-05_20_38-AM-1024x683.png 1024w, https:\/\/boochlin.com\/wp-content\/uploads\/2025\/05\/ChatGPT-Image-May-22-2025-05_20_38-AM-300x200.png 300w, https:\/\/boochlin.com\/wp-content\/uploads\/2025\/05\/ChatGPT-Image-May-22-2025-05_20_38-AM-768x512.png 768w, https:\/\/boochlin.com\/wp-content\/uploads\/2025\/05\/ChatGPT-Image-May-22-2025-05_20_38-AM.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<p>\u5728\u6211\u5011\u90a3\u53f0\u53ea\u6709 2GB RAM\u3001CPU \u6548\u80fd\u5b71\u5f31\u7684\u5d4c\u5165\u5f0f\u9580\u7981\u6a5f\u4e0a\u8dd1\u4eba\u81c9\u8fa8\u8b58\uff0c\u8a18\u61b6\u9ad4\u5c31\u50cf\u6bcf\u500b\u6708\u7684\u85aa\u6c34\u4e00\u6a23\uff1a\u6c38\u9060\u4e0d\u5920\u7528\u3002<\/p>\n\n\n\n<p>\u958b\u6a5f\u9032\u5165\u7cfb\u7d71\uff0cAndroid 10 \u7684 System Server\u3001SystemUI\u3001\u5404\u7a2e\u80cc\u666f\u670d\u52d9\u4e00\u8dd1\u8d77\u4f86\uff0c\u76f4\u63a5\u5403\u6389\u5c07\u8fd1 1.2GB\uff1b\u5269\u4e0b\u7684 800MB \u9084\u8981\u5206\u7d66 Camera HAL\uff08\u96d9\u93e1\u982d RGB + ToF\uff09\u3001ION \u7de9\u885d\u5340\u3001\u6f14\u7b97\u6cd5\u6a21\u578b\uff0850MB \u6b0a\u91cd + \u63a8\u7406\u5340\uff09\u3002<\/p>\n\n\n\n<p>\u53ea\u8981\u7cfb\u7d71\u8a18\u61b6\u9ad4\u7a0d\u5fae\u7dca\u7e43\uff0cLMKD \u5c31\u6703\u63d0\u8457\u5927\u5200\u5728\u80cc\u666f\u56db\u8655\u5de1\u908f\uff0c\u96a8\u6642\u6e96\u5099\u628a\u4f60\u7684\u4e3b\u7a0b\u5f0f\u7576\u5834\u69cd\u6583\u3002<\/p>\n\n\n\n<p>\u70ba\u4e86\u8b93 AI \u6a21\u578b\u80fd\u5728\u9019\u53f0\u7834\u677f\u5b50\u4e0a\u5b89\u7a69\u904b\u884c\uff0c\u6211\u5011\u9075\u5faa\u7684\u7b2c\u4e00\u539f\u5247\u59cb\u7d42\u662f\uff1a<strong>\u300c\u5148\u6c42\u80fd\u6d3b\u8457\u904b\u884c\uff0c\u518d\u6c42\u6548\u80fd\u6700\u4f73\u5316\u300d<\/strong>\u3002<\/p>\n\n\n\n<p>\u800c\u5728 Linux \u6838\u5fc3\u7684\u4e16\u754c\u88e1\uff0c\u81ea\u53e4\u6d41\u50b3\u8457\u4e09\u5927\u300c\u8a18\u61b6\u9ad4\u64f4\u5f35\u9ed1\u9b54\u6cd5\u300d\uff1a<strong>KSM\uff08\u8a18\u61b6\u9ad4\u5408\u4f75\uff09<\/strong>\u3001<strong>\u50b3\u7d71 SWAP\uff08\u786c\u789f\u4ea4\u63db\uff09<\/strong>\u3001\u4ee5\u53ca <strong>ZRAM\uff08\u8a18\u61b6\u9ad4\u58d3\u7e2e\u4ea4\u63db\uff09<\/strong>\u3002<\/p>\n\n\n\n<p>\u9019\u7bc7\u5c31\u4f86\u804a\u804a\u6211\u5011\u5728 2GB \u5d4c\u5165\u5f0f\u8a2d\u5099\u4e0a\uff0c\u5982\u4f55\u8e29\u5e73\u9019\u4e9b\u5167\u6838\u5751\u6d1e\uff0c\u627e\u5230\u6700\u6975\u81f4\u7684\u5e73\u8861\u9ede\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">0. \u786c\u6838\u524d\u7f6e\u77e5\u8b58\uff1a\u70ba\u4ec0\u9ebc DMA \/ ION \u7de9\u885d\u5340\u78b0\u90fd\u4e0d\u80fd\u78b0\uff1f<\/h2>\n\n\n\n<p>\u5728\u8a0e\u8ad6\u4efb\u4f55\u8a18\u61b6\u9ad4\u512a\u5316\u4e4b\u524d\uff0c\u5fc5\u9808\u5148\u5efa\u7acb\u4e00\u500b\u9435\u4e00\u822c\u7684\u7269\u7406\u8a8d\u77e5\uff1a<\/p>\n\n\n\n<p>\u5f88\u591a\u4eba\u4ee5\u70ba\u958b\u4e86 ZRAM \u6216 KSM\uff0c\u76f8\u6a5f\u5f71\u50cf\u548c AI \u6a21\u578b\u7684\u8a18\u61b6\u9ad4\u5c31\u80fd\u8ddf\u8457\u7e2e\u5c0f\u3002<strong>\u9019\u5728 Linux \u6838\u5fc3\u5c64\u9762\u5b8c\u5168\u662f\u4e0d\u53ef\u80fd\u7684\u3002<\/strong><\/p>\n\n\n\n<ul>\n<li><strong>DMA \/ ION \u7684\u7269\u7406\u672c\u8cea<\/strong>\uff1a\u76f8\u6a5f ISP \u5410\u51fa\u7684 YUV \u756b\u9762\u3001ToF \u6df1\u5ea6\u5716\uff0c\u4ee5\u53ca GPU\/NPU \u63a8\u7406\u6240\u5b58\u53d6\u7684\u7de9\u885d\u5340\uff0c\u90fd\u662f\u900f\u904e <strong>ION \/ DMA-BUF<\/strong> \u6a5f\u5236\u5411\u7cfb\u7d71\u7533\u8acb\u7684\u3002<\/li>\n\n\n\n<li><strong>\u9a45\u52d5\u5c64\u91d8\u6b7b\uff08Pinned Pages\uff09<\/strong>\uff1a\u9019\u4e9b\u7de9\u885d\u5340\u70ba\u4e86\u8b93\u786c\u9ad4\u6676\u7247\uff08ISP\u3001GPU\u3001NPU\uff09\u4ee5\u6700\u9ad8\u983b\u5bec\u76f4\u63a5\u5b58\u53d6\uff0c\u662f\u7531\u9a45\u52d5\u5c64\u76f4\u63a5\u9396\u5b9a\u5728\u5be6\u9ad4\u8a18\u61b6\u9ad4\u4e2d\u7684\u4e0d\u53ef\u79fb\u52d5\u9801\u9762\uff08Non-LRU \u9801\u9762\uff09\u3002<\/li>\n\n\n\n<li><strong>\u6838\u5fc3\u7121\u6cd5\u58d3\u7e2e<\/strong>\uff1aLinux \u6838\u5fc3\u7684\u8a18\u61b6\u9ad4\u56de\u6536\u6a5f\u5236\uff08Swap\/ZRAM\uff09<strong>\u53ea\u80fd\u4f5c\u7528\u65bc\u7528\u6236\u7a7a\u9593\u7684\u533f\u540d\u9801\u9762\uff08Anonymous Pages\uff09<\/strong>\uff0c\u5b83\u6839\u672c\u6c92\u6709\u6a5f\u5236\u3001\u4e5f\u4e0d\u53ef\u80fd\u628a\u786c\u9ad4\u9a45\u52d5\u91d8\u6b7b\u7684 DMA-BUF \u4e1f\u9032 Swap \u58d3\u7e2e\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u9019\u4ee3\u8868\u4e86\u4e00\u4ef6\u6975\u5ea6\u6b98\u9177\u7684\u4e8b\u5be6\uff1a<strong>\u76f8\u6a5f\u8207 AI \u4f54\u7528\u7684\u5be6\u9ad4 RAM \u662f\u96f7\u6253\u4e0d\u52d5\u7684\u300c\u786c\u6210\u672c\u300d\u3002<\/strong><\/p>\n\n\n\n<p>\u6211\u5011\u80fd\u512a\u5316\u7684\u5c0d\u8c61\uff0c\u5f9e\u4f86\u5c31\u4e0d\u662f AI \u6216\u76f8\u6a5f\u672c\u8eab\uff0c\u800c\u662f\u65c1\u908a\u90a3\u4e9b\u8a0e\u4eba\u53ad\u7684<strong>\u300cAndroid \u7cfb\u7d71\u80cc\u666f\u670d\u52d9\uff08System Services\uff09\u300d<\/strong>\u2014\u2014\u6211\u5011\u7684\u4efb\u52d9\u662f\u628a\u7cfb\u7d71\u670d\u52d9\u58d3\u5230\u6700\u5c0f\uff0c\u628a\u5bf6\u8cb4\u4e7e\u6de8\u7684\u5be6\u9ad4 RAM \u9a30\u51fa\u4f86\u7d66 AI \u63ee\u970d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1. Kernel Samepage Merging\uff08KSM\uff09\u2014\u2014\u770b\u4f3c\u7f8e\u597d\u7684\u8ce0\u672c\u6bd2\u85e5<\/h2>\n\n\n\n<p>KSM \u7684\u539f\u7406\u807d\u8d77\u4f86\u975e\u5e38\u5922\u5e7b\uff1a\u6838\u5fc3\u80cc\u666f\u6703\u6709\u500b\u53eb <code>ksmd<\/code> \u7684\u5b88\u8b77\u884c\u7a0b\uff0c\u5b9a\u671f\u6383\u63cf\u7cfb\u7d71\u8a18\u61b6\u9ad4\uff0c\u53ea\u8981\u767c\u73fe\u6709\u5169\u584a 4KB \u9801\u9762\u7684\u5167\u5bb9\u4e00\u6a21\u4e00\u6a23\uff0c\u5c31\u628a\u5b83\u5011\u5408\u4f75\u6210\u540c\u4e00\u500b\u9801\u9762\uff0c\u4e26\u6a19\u8a18\u70ba Copy-on-Write\uff08\u5beb\u5165\u6642\u8907\u88fd\uff09\uff0c\u85c9\u6b64\u6191\u7a7a\u751f\u51fa\u8a18\u61b6\u9ad4\u3002<\/p>\n\n\n\n<p>\u807d\u8d77\u4f86\u5f88\u795e\u5c0d\u5427\uff1f\u6211\u5011\u5be6\u6e2c\u4e4b\u5f8c\u5dee\u9ede\u6c92\u5410\u8840\uff1a<\/p>\n\n\n\n<ul>\n<li><strong>\u8a18\u61b6\u9ad4\u7701\u4e86\u500b\u5bc2\u5bde<\/strong>\uff1a\u5728\u6211\u5011\u9019\u53f0\u9580\u7981\u6a5f\u4e0a\uff0cKSM \u6383\u4e86\u534a\u5929\uff0c\u7e3d\u5171\u53ea\u7701\u4e0b\u4e86\u4e0d\u5230 <strong>20MB<\/strong> \u7684\u8a18\u61b6\u9ad4\uff08\u4f54\u6bd4\u4e0d\u8db3 1%\uff09\u3002\u56e0\u70ba\u76f8\u6a5f\u7de9\u885d\u5340\u4e0d\u80fd\u78b0\u3001AI \u6a21\u578b\u4e0d\u80fd\u78b0\uff0c\u7cfb\u7d71\u670d\u52d9\u88e1\u771f\u6b63\u5b8c\u5168\u76f8\u540c\u7684\u533f\u540d\u9801\u9762\u5c11\u5f97\u53ef\u6190\u3002<\/li>\n\n\n\n<li><strong>CPU \u7b97\u529b\u88ab\u56b4\u91cd\u5077\u5403<\/strong>\uff1a<code>ksmd<\/code> \u70ba\u4e86\u4e0d\u65b7\u6bd4\u5c0d\u8a18\u61b6\u9ad4\u9801\u9762\u7684 Hash\uff0c\u5728\u6211\u5011\u9019\u9846 1.4GHz \u7684 4 \u6838\u5fc3\u5f31 CPU \u4e0a\uff0c\u767d\u767d\u5403\u6389\u4e86 <strong>5%~10% \u7684 CPU \u4f7f\u7528\u7387<\/strong>\uff01<\/li>\n<\/ul>\n\n\n\n<p>\u5728\u539f\u672c\u5c31\u5df2\u7d93\u6349\u895f\u898b\u8098\u7684 CPU \u4e0a\uff0c\u62ff 10% \u7684\u5bf6\u8cb4\u7b97\u529b\u53bb\u63db\u5fae\u4e0d\u8db3\u9053\u7684 20MB \u8a18\u61b6\u9ad4\uff0c\u5b8c\u5168\u662f\u8ce0\u672c\u751f\u610f\u3002<\/p>\n\n\n\n<p><strong>\u7d50\u8ad6\uff1a\u679c\u65b7\u95dc\u9589 KSM\uff0c\u6838\u5fc3\u7de8\u8b6f\u6642\u76f4\u63a5\u62ff\u6389\uff0c\u9023\u4e00\u884c\u6383\u63cf\u90fd\u4e0d\u7d66\u5b83\u8dd1\u3002<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. \u50b3\u7d71 Swap\uff08eMMC \/ Flash\uff09\u2014\u2014\u9580\u7981\u6a5f\u7684\u6162\u6027\u81ea\u6bba<\/h2>\n\n\n\n<p>\u7576 RAM \u4e0d\u8db3\u6642\uff0c\u50b3\u7d71 Linux \u6700\u6a19\u6e96\u7684\u505a\u6cd5\u5c31\u662f\u5207\u4e00\u584a\u786c\u789f\u7a7a\u9593\u7576 Swap\uff0c\u628a\u51b7\u8cc7\u6599\u63db\u51fa\u5230\u786c\u789f\u4e0a\u3002<\/p>\n\n\n\n<p>\u4f46\u5728 7\u00d724 \u5c0f\u6642\u7121\u4eba\u770b\u7ba1\u7684\u5d4c\u5165\u5f0f\u9580\u7981\u6a5f\u4e0a\uff0c<strong>\u7d55\u5c0d\u7981\u6b62\u4f7f\u7528 eMMC \/ Flash \u4f5c\u70ba Swap \u5206\u5272\u5340<\/strong>\uff1a<\/p>\n\n\n\n<ul>\n<li><strong>Flash \u58fd\u547d\u88ab\u8fc5\u901f\u78e8\u7a7f\uff08TBW \u9650\u5236\uff09<\/strong>\uff1aeMMC \u7684\u5beb\u5165\u6b21\u6578\u662f\u6709\u9650\u7684\u3002\u9580\u7981\u6a5f\u9577\u671f\u904b\u4f5c\u4e0b\uff0c\u983b\u7e41\u7684 Swap \u5beb\u5165\u6703\u5728\u77ed\u77ed\u5e7e\u500b\u6708\u5167\u628a\u677f\u8f09 eMMC \u9846\u7c92\u5beb\u721b\uff0c\u6574\u53f0\u6a5f\u5668\u76f4\u63a5\u8b8a\u78da\uff08\u7121\u6cd5\u958b\u6a5f\uff09\u3002<\/li>\n\n\n\n<li><strong>\u707d\u96e3\u7d1a\u7684 I\/O \u5ef6\u9072<\/strong>\uff1aeMMC \u7684\u8b80\u5beb\u5ef6\u9072\u52d5\u8f12\u5e7e\u5341\u6beb\u79d2\uff08ms\uff09\uff0c\u800c RAM \u662f\u5948\u79d2\uff08ns\uff09\u7d1a\u3002\u4e00\u65e6\u95dc\u9375\u57f7\u884c\u7dd2\u8e29\u5230 eMMC Swap In\uff0c\u756b\u9762\u6703\u7576\u5834\u5b9a\u683c\u5361\u6b7b\uff0c\u76f8\u6a5f\u76f4\u63a5\u6389\u5e40\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u7d50\u8ad6\uff1aAndroid \u539f\u5ee0\u5f9e\u672a\u958b\u653e eMMC Swap \u662f\u7d55\u5c0d\u6b63\u78ba\u7684\uff0c\u5343\u842c\u4e0d\u8981\u81ea\u5df1\u81ea\u4f5c\u8070\u660e\u53bb\u639b\u8f09 Flash Swap\u3002<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. ZRAM\uff08\u8a18\u61b6\u9ad4\u58d3\u7e2e\uff09\u2014\u2014\u5f31 CPU \u8a2d\u5099\u4e0a\u7684\u300c\u514b\u5236\u85dd\u8853\u300d<\/h2>\n\n\n\n<p>\u6392\u9664\u6389\u524d\u9762\u5169\u689d\u6b7b\u8def\uff0c\u552f\u4e00\u53ef\u884c\u7684\u6b63\u9053\u5c31\u662f <strong>ZRAM\uff08\u58d3\u7e2e Swap\uff09<\/strong>\u3002<\/p>\n\n\n\n<p>ZRAM \u7684\u6982\u5ff5\u975e\u5e38\u5de7\u5999\uff1a\u5b83\u5728 RAM \u5167\u90e8\u5283\u51fa\u4e00\u584a\u865b\u64ec\u5340\u57df\uff0c\u7576\u8a18\u61b6\u9ad4\u544a\u6025\u6642\uff0c\u6838\u5fc3\u628a\u8f03\u5c11\u4f7f\u7528\u7684\u8cc7\u6599\u900f\u904e CPU \u5feb\u901f\u58d3\u7e2e\u5f8c\u585e\u9032\u9019\u584a\u5340\u57df\u3002\u9700\u8981\u7528\u6642\u518d\u89e3\u58d3\u7e2e\u9084\u539f\uff0c\u5b8c\u5168\u4e0d\u7d93\u904e\u6162\u901f\u7684 eMMC\u3002<\/p>\n\n\n\n<p>\u4f46\u4f7f\u7528 ZRAM\uff0c\u5fc5\u9808\u6709\u6975\u5ea6\u6e05\u9192\u7684<strong>\u300c\u514b\u5236\u601d\u7dad\u300d<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u58d3\u7e2e\u6f14\u7b97\u6cd5\u6289\u64c7\uff1a\u70ba\u4ec0\u9ebc\u975e LZ4 \u4e0d\u53ef\uff1f<\/h3>\n\n\n\n<ul>\n<li><strong>ZSTD \/ GZIP<\/strong>\uff1a\u58d3\u7e2e\u7387\u8f03\u9ad8\uff08\u53ef\u9054 3~4 \u500d\uff09\uff0c\u4f46\u89e3\u58d3\u7e2e\u6975\u5ea6\u6d88\u8017 CPU\u3002\u5728 1.4GHz \u5f31 CPU \u4e0a\uff0c\u89e3\u58d3\u7e2e\u6703\u76f4\u63a5\u5f15\u767c\u56b4\u91cd\u7684 CPU \u5c16\u5cf0\u3002<\/li>\n\n\n\n<li><strong>LZ4<\/strong>\uff1a\u58d3\u7e2e\u6bd4\u7a0d\u4f4e\uff08\u7d04 2.5~3 \u500d\uff09\uff0c\u4f46<strong>\u89e3\u58d3\u7e2e\u901f\u5ea6\u6975\u5feb\u3001\u5ef6\u9072\u6975\u4f4e<\/strong>\u3002\u5c0d\u65bc 30fps \u5373\u6642\u4eba\u81c9\u8fa8\u8b58\u4f86\u8aaa\uff0cLZ4 \u662f\u552f\u4e00\u53ca\u683c\u7684\u9078\u64c7\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5bb9\u91cf\u8a2d\u5b9a\u6289\u64c7\uff1a\u70ba\u4ec0\u9ebc\u53ea\u8a2d 256MB\uff0c\u800c\u4e0d\u662f\u624b\u6a5f\u5e38\u898b\u7684 1GB\uff1f<\/h3>\n\n\n\n<p>\u4e00\u822c\u624b\u6a5f\u56e0\u70ba CPU \u6548\u80fd\u5f37\u608d\uff0c\u52d5\u8f12\u958b 1GB~2GB \u7684 ZRAM\u3002\u4f46\u5728\u6211\u5011\u9019\u53f0 4 \u6838\u5fc3\u4f4e\u968e\u9580\u7981\u6a5f\u4e0a\uff0c<strong>ZRAM \u7684\u672c\u8cea\u662f\u300c\u7528 CPU \u7b97\u529b\u63db\u8a18\u61b6\u9ad4\u7a7a\u9593\u300d<\/strong>\u3002<\/p>\n\n\n\n<p>\u5982\u679c ZRAM \u958b\u5f97\u592a\u5927\uff0c\u7576\u5927\u91cf\u8cc7\u6599\u983b\u7e41\u63db\u5165\u63db\u51fa\u6642\uff0c<strong>\u89e3\u58d3\u7e2e\u7684 CPU \u958b\u92b7\u6703\u76f4\u63a5\u6436\u8d70 AI \u63a8\u7406\u548c\u76f8\u6a5f Pipeline \u7684\u7b97\u529b<\/strong>\uff01<\/p>\n\n\n\n<p>\u6211\u5011\u7d93\u904e\u58d3\u6e2c\u767c\u73fe\uff1a<\/p>\n\n\n\n<ul>\n<li>\u7cfb\u7d71\u4e2d\u5e38\u99d0\u7684 System Server\u3001Settings\u3001Launcher \u7b49\u80cc\u666f\u670d\u52d9\uff0c\u51b7\u8cc7\u6599\u5927\u7d04\u4f54\u7528 1.1GB\u3002<\/li>\n\n\n\n<li>\u900f\u904e LZ4 \u58d3\u7e2e\u5f8c\uff0c\u5927\u7d04\u9700\u8981 <strong>250MB \u5de6\u53f3\u7684\u7a7a\u9593<\/strong>\u3002<\/li>\n\n\n\n<li>\u56e0\u6b64\uff0c\u6211\u5011\u628a ZRAM \u7cbe\u78ba\u9396\u5b9a\u5728 <strong>256MB\uff08268435456 bytes\uff09<\/strong>\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u9019\u9054\u6210\u4e86\u6975\u81f4\u7684\u5e73\u8861\uff1a<strong>\u7528\u6700\u5c0f\u7684 CPU \u4ee3\u50f9\uff0c\u525b\u597d\u628a\u7cfb\u7d71\u80cc\u666f\u670d\u52d9\u58d3\u7e2e\u6536\u5bb9\u9032\u53bb\uff0c\u64e0\u51fa\u7d04 150~200MB \u7684\u4e7e\u6de8\u5be6\u9ad4 RAM \u7d66\u76f8\u6a5f\u8207 AI\uff0c\u540c\u6642\u4fdd\u8b49 CPU \u5b8c\u5168\u4e0d\u88ab\u62d6\u57ae\u3002<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u95dc\u9375\u914d\u7f6e\u8207\u5be6\u6230\u7a0b\u5f0f\u78bc<\/h2>\n\n\n\n<p>\u8981\u8b93\u9019\u5957\u914d\u7f6e\u5728 Android 10 \u5b8c\u7f8e\u843d\u5730\uff0c\u9700\u8981\u4fee\u6539\u5167\u6838\u914d\u7f6e\u8207\u7cfb\u7d71\u639b\u8f09\u8173\u672c\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5167\u6838\u8a2d\u5b9a\uff08Kernel defconfig\uff09<\/h3>\n\n\n\n<p>\u5728\u81ea\u7de8\u7684 Linux \u5167\u6838\u4e2d\u555f\u7528 ZRAM\uff0c\u4e26\u679c\u65b7\u95dc\u9589 KSM\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n# \u555f\u7528 Swap \u8207 ZRAM \u6838\u5fc3\u652f\u63f4\nCONFIG_SWAP=y\nCONFIG_ZRAM=y\nCONFIG_ZSMALLOC=y\n\n# \u555f\u7528\u73fe\u4ee3 Memory Cgroup\uff08\u6ce8\u610f\uff1a\u820a\u7248 CONFIG_CGROUP_MEM_RES_CTLR \u5df2\u5ee2\u68c4\uff09\nCONFIG_MEMCG=y\nCONFIG_MEMCG_SWAP=y\n\n# \u95dc\u9375\u6c7a\u7b56\uff1a\u679c\u65b7\u95dc\u9589 KSM\uff0c\u7701\u4e0b 10% CPU \u7b97\u529b\n# CONFIG_KSM is not set\n<\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">fstab \u639b\u8f09\u8a2d\u5b9a<\/h3>\n\n\n\n<p>\u5728\u8a2d\u5099\u7684 <code>fstab<\/code> \u6a94\u6848\u4e2d\u52a0\u5165 ZRAM \u639b\u8f09\uff08<strong>\u6ce8\u610f\uff1a\u53c3\u6578\u9017\u865f\u9593\u56b4\u7981\u7a7a\u683c<\/strong>\uff0c\u5426\u5247 <code>fs_mgr<\/code> \u6703\u89e3\u6790\u5931\u6557\u5c0e\u81f4\u7121\u6cd5\u639b\u8f09\uff09\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n# \/vendor\/etc\/fstab.qcom (\u7dca\u6e4a\u7121\u7a7a\u683c)\n\/dev\/block\/zram0 none swap defaults zramsize=268435456\n<\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">init.rc \u7cfb\u7d71\u555f\u52d5\u8abf\u512a<\/h3>\n\n\n\n<p>\u5728\u7cfb\u7d71\u958b\u6a5f\u8173\u672c\u4e2d\u639b\u8f09 Swap\uff0c\u4e26\u4e0b\u9054\u6700\u95dc\u9375\u7684\u6027\u80fd\u512a\u5316\u53c3\u6578\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n# 1. \u555f\u7528\u6240\u6709 Swap \u5206\u5272\u5340\nswapon_all \/vendor\/etc\/fstab.qcom\n\n# 2. \u9748\u9b42\u53c3\u6578\uff1a\u95dc\u9589 Swap \u9810\u8b80\uff08page-cluster \u8a2d\u70ba 0\uff09\n# \u50b3\u7d71\u786c\u789f\u9700\u8981\u4e00\u6b21\u9810\u8b80 8 \u9801 (32KB) \u6e1b\u5c11\u5c0b\u9053\uff1bZRAM \u5c0b\u9053\u6642\u9593\u70ba 0\uff0c\u8a2d 0 \u6bcf\u6b21\u53ea\u89e3\u58d3\u89f8\u767c\u7684 4KB\uff0c\u7701\u4e0b\u5de8\u5927 CPU \u7b97\u529b\uff01\nwrite \/proc\/sys\/vm\/page-cluster 0\n\n# 3. \u8a2d\u5b9a\u63db\u51fa\u7a4d\u6975\u5ea6\uff08\u8a2d\u70ba 60\uff0c\u907f\u514d\u904e\u65bc\u983b\u7e41\u89f8\u767c\u58d3\u7e2e\uff09\nwrite \/proc\/sys\/vm\/swappiness 60\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7d50\u8a9e<\/h2>\n\n\n\n<p>\u5728\u9019\u53f0 2GB \u7684\u7834\u88dd\u7f6e\u4e0a\u8abf\u6559\u8a18\u61b6\u9ad4\uff0c\u6211\u5011\u5b78\u6703\u7684\u6700\u91cd\u8981\u5fc3\u6cd5\u4e0d\u662f\u300c\u5927\u5200\u95ca\u65a7\u300d\uff0c\u800c\u662f<strong>\u300c\u7cbe\u6e96\u514b\u5236\u300d<\/strong>\uff1a<\/p>\n\n\n\n<ol>\n<li><strong>\u8a8d\u6e05\u73fe\u5be6<\/strong>\uff1aDMA \/ ION \u662f\u786c\u6210\u672c\uff0c\u8ab0\u4e5f\u52d5\u4e0d\u4e86\u3002<\/li>\n\n\n\n<li><strong>\u62d2\u7d55\u8a98\u60d1<\/strong>\uff1aKSM \u96d6\u597d\uff0c\u4f46\u5f31 CPU \u6839\u672c\u7121\u798f\u6d88\u53d7\uff0c\u679c\u65b7\u95dc\u9589\u3002<\/li>\n\n\n\n<li><strong>\u62d2\u7d55\u73a9\u706b<\/strong>\uff1aeMMC \u58fd\u547d\u6709\u9650\uff0c\u50b3\u7d71 Swap \u78b0\u90fd\u5225\u78b0\u3002<\/li>\n\n\n\n<li><strong>\u7cbe\u6e96\u65bd\u7b56<\/strong>\uff1a<strong>256MB ZRAM + LZ4 + page-cluster=0<\/strong>\uff0c\u4ee5\u6700\u5c0f\u7684 CPU \u4ee3\u50f9\u63db\u53d6\u7cfb\u7d71\u670d\u52d9\u7684\u58d3\u7e2e\u7a7a\u9593\uff0c\u628a\u7d14\u6de8\u7684\u5be6\u9ad4\u8a18\u61b6\u9ad4\u7559\u7d66 30fps \u4eba\u81c9\u8fa8\u8b58\u6230\u5834\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u53c3\u8003\u8cc7\u6599 (References)<\/h2>\n\n\n\n<ol>\n<li><strong>Android Low RAM Configuration Guide<\/strong>: Google \u5b98\u65b9\u4f4e\u8a18\u61b6\u9ad4\u8a2d\u5099\u8abf\u512a\u6307\u5357.<br><a href=\"https:\/\/source.android.com\/docs\/core\/perf\/low-ram\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/source.android.com\/docs\/core\/perf\/low-ram<\/a><\/li>\n\n\n\n<li><strong>Linux Kernel ZRAM Documentation<\/strong>: Official Linux ZRAM module architecture &amp; tuning.<br><a href=\"https:\/\/www.kernel.org\/doc\/Documentation\/blockdev\/zram.txt\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.kernel.org\/doc\/Documentation\/blockdev\/zram.txt<\/a><\/li>\n\n\n\n<li><strong>Linux Kernel Memory Cgroup (memcg)<\/strong>: Control Group Memory Resource Controller.<br><a href=\"https:\/\/www.kernel.org\/doc\/Documentation\/cgroup-v1\/memory.txt\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.kernel.org\/doc\/Documentation\/cgroup-v1\/memory.txt<\/a><\/li>\n<\/ol>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>\u4efb\u4f55\u7cfb\u7d71\u7684\u8abf\u6821\u90fd\u61c9\u57fa\u65bc\u5be6\u969b\u4f7f\u7528\u5834\u666f\u9032\u884c\u6700\u4f73\u5316\u3002\u91dd\u5c0d\u4eba\u81c9\u8fa8\u8b58\u6a5f\u7684\u61c9\u7528\uff0cAI \u6a21\u578b\u904b\u884c\u6975\u5ea6\u4f9d\u8cf4\u8a18\u61b6\u9ad4\uff0c\u800c\u88dd\u7f6e\u8a18\u61b6\u9ad4\u901a\u5e38\u4e0d\u8db3\u3002\u56e0\u6b64\uff0c\u9996\u8981\u4efb\u52d9\u662f\u78ba\u4fdd\u61c9\u7528\u7a0b\u5f0f\u80fd\u5920\u9806\u5229\u57f7\u884c AI \u6a21\u578b\uff0c\u4e4b\u5f8c\u624d\u6709\u512a\u5316\u57f7\u884c\u901f\u5ea6\u7684\u7a7a\u9593\u3002<\/p>\n<p>\u61c9\u9075\u5faa\u7684\u539f\u5247\uff1a\u300c\u5148\u6c42\u80fd\u904b\u884c\uff0c\u518d\u6c42\u6548\u80fd\u6700\u4f73\u5316\u300d\u3002<\/p>\n","protected":false},"author":1,"featured_media":555,"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\/418"}],"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=418"}],"version-history":[{"count":16,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts\/418\/revisions"}],"predecessor-version":[{"id":989,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts\/418\/revisions\/989"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/media\/555"}],"wp:attachment":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=418"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}