{"id":105,"date":"2025-08-21T09:39:31","date_gmt":"2025-08-21T01:39:31","guid":{"rendered":"http:\/\/www.liumx.com\/?p=105"},"modified":"2025-08-25T09:08:32","modified_gmt":"2025-08-25T01:08:32","slug":"android_xing_neng_chang_yong_ming_ling","status":"publish","type":"post","link":"http:\/\/www.liumx.com\/index.php\/2025\/08\/21\/android_xing_neng_chang_yong_ming_ling\/","title":{"rendered":"android \u5e38\u7528\u547d\u4ee4"},"content":{"rendered":"<p># android \u5e38\u7528\u547d\u4ee4<br \/>\n## common<br \/>\n### \u7cfb\u7edf\u63a5\u53e3\u8c03\u7528\u60c5\u51b5<br \/>\n  `strace -ttT -f -p pid`<br \/>\n### \u7edf\u8ba1\u4e00\u6bb5\u65f6\u95f4\u5185\u6240\u6709\u7cfb\u7edf\u8c03\u7528\u7684\u8017\u65f6\u6982\u51b5<br \/>\n`strace -c -f -p [pid]`<\/p>\n<p>## IO<br \/>\n### \u6e05\u9664Buffer\u548cCache\u5185\u5b58\u7f13\u5b58<br \/>\n\t`echo 3 > \/proc\/sys\/vm\/drop_caches`<br \/>\n### \u6d4b\u8bd5\u5199\u5165\u901f\u5ea6<br \/>\n `dd if=\/dev\/zero of=\/data\/data\/test bs=4k count=1000`<br \/>\n###  \u4fee\u6539zram\u5927\u5c0f<br \/>\n&#8220;`<br \/>\n\u6267\u884c\u547d\u4ee4\uff1acat \/proc\/swaps \u67e5\u770b\u8bbe\u5907\u8def\u5f84\uff1a<br \/>\n|k69v1_64:\/ # cat \/proc\/swaps<br \/>\nFilename                 Type       Size       Used     Priority<br \/>\n\/dev\/block\/zram0 partition 2166220 333312    -2<br \/>\n\u6267\u884c\u547d\u4ee4\uff1aswapoff \/dev\/block\/zram0  \u5173\u95ed\u8be5\u8bbe\u5907<br \/>\n\u518d\u6b21\u6267\u884c cat \/proc\/swaps \u786e\u8ba4\u8bbe\u5907\u5df2\u7ecf\u6b63\u5e38\u5173\u95ed\uff1a<br \/>\nk69v1_64:\/ # cat \/proc\/swaps<br \/>\nFilename Type Size Used Priority<br \/>\n\u4e0b\u9762\u5df2\u7ecf\u6ca1\u6709\u663e\u793azram0\uff0c\u8bf4\u660e\u5df2\u7ecf\u6b63\u5e38\u5173\u95ed\u3002<br \/>\n\u6267\u884c\u547d\u4ee4\uff1aecho 1 > \/sys\/block\/zram0\/reset \u53bbreset zram<br \/>\n\u786e\u4fdd3.2\u6ce8\u610f\u4e8b\u9879\u4e2d\u9700\u8981\u6267\u884c\u7684\u6b65\u9aa4\u6267\u884c\u5b8c\u6bd5<br \/>\n\u6267\u884c\u547d\u4ee4\uff1aecho 64M > \/sys\/block\/zram0\/disksize \u53bb\u8bbe\u5b9azram\u5927\u5c0f\u3002<br \/>\n\u5176\u4e2d64M\u8868\u793a\u9700\u8981\u8bbe\u5b9a\u7684zram\u7684\u5927\u5c0f\uff0c\u4e5f\u53ef\u4ee5\u7528echo $((64*1024)) > \/sys\/block\/zram0\/disksize\u8fd9\u79cd\u65b9\u5f0f\u6765\u8bbe\u5b9azram\u7684\u5927\u5c0f\u3002<br \/>\n\u8bbe\u5b9azram\u5927\u5c0f\u540e\uff0c\u8fd8\u9700\u6267\u884c\u5982\u4e0b\u4e24\u6761\u6307\u4ee4\u624d\u80fd\u751f\u6548\uff1a<br \/>\nmkswap \/dev\/block\/zram0<br \/>\nswapon \/dev\/block\/zram0<br \/>\n\u6267\u884c cat \/proc\/meminfo \u68c0\u67e5\u662f\u5426\u8bbe\u7f6e\u6210\u529f<br \/>\nSwapTotal:         65532 kB<br \/>\nSwapFree:          65532 kB<br \/>\n&#8220;`<\/p>\n<p>### \u68c0\u67e5swap\u4fe1\u606f<br \/>\n&#8220;`<br \/>\nxxxxx_bsp:\/ # cat \/proc\/zraminfo<br \/>\nDiskSize: 1073560 kB                \/\/swap disk size<br \/>\nOrigSize: 232468 kB                  \/\/swap out original size<br \/>\nComprSize: 57129 kB                \/\/compressed size<br \/>\nMemUsed: 64480 kB                  \/\/zrame total used size (compressed size + meta data)<br \/>\nZeroPage: 41812 kB<br \/>\nNotifyFree: 1419896 kB<br \/>\nFailReads: 0 kB<br \/>\nFailWrites: 0 kB<br \/>\nNumReads: 612604 kB<br \/>\nNumWrites: 1151908 kB<br \/>\nInvalidIO: 0 kB<br \/>\nMaxUsedPages: 93036 kB<br \/>\nPageMigrated: 27764 kB<br \/>\nAlgorithm: [lz4]<br \/>\n&#8220;`<\/p>\n<p>## mem<\/p>\n<p>## cpu<\/p>\n<p>## gpu<br \/>\n### mtk \u5e73\u53f0 gpu loading<br \/>\n`cat \/proc\/gpufreq\/gpufreq_opp_dump`<\/p>\n<p>### mtk \u5e73\u53f0 gpu frep\u5b9a\u9891<br \/>\n&#8220;`<br \/>\necho 1 500500 1250 > \/proc\/gpufreq\/gpufreq_fix_frequency<br \/>\ncat \/proc\/gpufreq\/gpufreq_opp_dump<br \/>\ncat \/proc\/mali\/utilization<br \/>\n&#8220;`<\/p>\n","protected":false},"excerpt":{"rendered":"<p># android \u5e38\u7528\u547d\u4ee4 ## common ### \u7cfb\u7edf\u63a5\u53e3\u8c03\u7528\u60c5\u51b5 `strace -ttT -f &#8211; &#8230; <a title=\"android \u5e38\u7528\u547d\u4ee4\" class=\"read-more\" href=\"http:\/\/www.liumx.com\/index.php\/2025\/08\/21\/android_xing_neng_chang_yong_ming_ling\/\" aria-label=\"\u9605\u8bfb android \u5e38\u7528\u547d\u4ee4\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"aside","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-105","post","type-post","status-publish","format-aside","hentry","category-xing_neng_gong_ju","post_format-post-format-aside"],"_links":{"self":[{"href":"http:\/\/www.liumx.com\/index.php\/wp-json\/wp\/v2\/posts\/105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.liumx.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.liumx.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.liumx.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.liumx.com\/index.php\/wp-json\/wp\/v2\/comments?post=105"}],"version-history":[{"count":7,"href":"http:\/\/www.liumx.com\/index.php\/wp-json\/wp\/v2\/posts\/105\/revisions"}],"predecessor-version":[{"id":186,"href":"http:\/\/www.liumx.com\/index.php\/wp-json\/wp\/v2\/posts\/105\/revisions\/186"}],"wp:attachment":[{"href":"http:\/\/www.liumx.com\/index.php\/wp-json\/wp\/v2\/media?parent=105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.liumx.com\/index.php\/wp-json\/wp\/v2\/categories?post=105"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.liumx.com\/index.php\/wp-json\/wp\/v2\/tags?post=105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}