{"id":205026,"date":"2025-05-29T12:56:45","date_gmt":"2025-05-29T04:56:45","guid":{"rendered":"https:\/\/server.hk\/cnblog\/205026\/"},"modified":"2025-05-29T12:56:45","modified_gmt":"2025-05-29T04:56:45","slug":"%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8-tmpfs-%e5%b0%86%e6%96%87%e4%bb%b6%e5%ad%98%e5%82%a8%e5%9c%a8%e5%86%85%e5%ad%98%e4%b8%ad%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/205026\/","title":{"rendered":"\u5982\u4f55\u5229\u7528 tmpfs \u5c06\u6587\u4ef6\u5b58\u50a8\u5728\u5185\u5b58\u4e2d\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u5229\u7528 tmpfs \u5c06\u6587\u4ef6\u5b58\u50a8\u5728\u5185\u5b58\u4e2d\uff1f<\/h1>\n<p>\u5728\u6587\u7ae0\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929\u5c31\u6574\u7406\u5206\u4eab\u300a\u5982\u4f55\u5229\u7528 tmpfs \u5c06\u6587\u4ef6\u5b58\u50a8\u5728\u5185\u5b58\u4e2d\uff1f\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241121\/1732198546673f40925868c.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5982\u4f55\u5728\u5185\u5b58\u4e2d\u5b58\u50a8\u6587\u4ef6\uff1f<\/strong><\/p>\n<p>\u4e3a\u4e86\u6ee1\u8db3\u7279\u5b9a\u9700\u6c42\uff0c\u4f8b\u5982\u4ece ram \u4e2d\u83b7\u53d6\u89c6\u9891\u5173\u952e\u5e27\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u5411\u91cf\uff0c\u6211\u4eec\u5e0c\u671b\u5c06\u6587\u4ef6\u76f4\u63a5\u5199\u5165\u5185\u5b58\uff0c\u907f\u514d\u78c1\u76d8\u5199\u5165\u548c\u8bfb\u53d6\u7684\u6027\u80fd\u74f6\u9888\u3002<\/p>\n<p>\u89e3\u51b3\u65b9\u6848\u662f\u4f7f\u7528 <strong>tmpfs<\/strong>\uff0c\u4e00\u79cd linux \u5185\u5b58\u6587\u4ef6\u7cfb\u7edf\u3002\u5b83\u5c06 ram \u89c6\u4e3a rom\uff0c\u5141\u8bb8\u5e94\u7528\u7a0b\u5e8f\u5c06\u6587\u4ef6\u76f4\u63a5\u5199\u5165\u5185\u5b58\u3002<\/p>\n<p><strong>\u4ee5\u4e0b\u662f\u4f7f\u7528 tmpfs \u7684\u6b65\u9aa4\uff1a<\/strong><\/p>\n<ol>\n<li>\u5728\u7cfb\u7edf\u4e2d\u542f\u7528 tmpfs \u6a21\u5757\u3002<\/li>\n<li>\n<p>\u521b\u5efa\u4e00\u4e2a tmpfs \u6302\u8f7d\u70b9\uff1a<\/p>\n<pre>mkdir \/mnt\/tmpfs\nmount -t tmpfs -o size=100mi,mode=1777 tmpfs \/mnt\/tmpfs<\/pre>\n<\/li>\n<li>\n<p>\u5c06 ffmpeg \u8f93\u51fa\u5199\u5165 tmpfs \u6302\u8f7d\u70b9\uff1a<\/p>\n<pre>ffmpeg -i \"\u963f\u7518\u6b63\u4f20.mp4\" -vf \"select=eq(pict_type\\,i)\"  -vsync vfr -qscale:v 2 -f image2 \/mnt\/tmpfs\/snapshot\/%08d.jpg<\/pre>\n<\/li>\n<li>\n<p>\u4f7f\u7528 python \u7a0b\u5e8f\u4ece tmpfs \u6302\u8f7d\u70b9\u8bfb\u53d6\u56fe\u50cf\u8fdb\u884c\u8fdb\u4e00\u6b65\u5904\u7406\uff1a<\/p>\n<pre>import os\n\n# \u83b7\u53d6 tmpfs \u4e2d\u56fe\u50cf\u6587\u4ef6\u7684\u8def\u5f84\nimage_paths = os.listdir(\"\/mnt\/tmpfs\/snapshot\")\n\n# \u9010\u4e2a\u5904\u7406\u56fe\u50cf\nfor image_path in image_paths:\n    # \u4ece tmpfs \u4e2d\u8bfb\u53d6\u56fe\u50cf\n    image = cv2.imread(os.path.join(\"\/mnt\/tmpfs\/snapshot\", image_path))\n\n    # \u8fdb\u884c\u56fe\u50cf\u5904\u7406\n    # ...<\/pre>\n<\/li>\n<\/ol>\n<p>\u4f7f\u7528 tmpfs \u53ef\u4ee5\u6781\u5927\u5730\u63d0\u9ad8\u6027\u80fd\uff0c\u56e0\u4e3a\u56fe\u50cf\u5904\u7406\u5b8c\u5168\u5728\u5185\u5b58\u4e2d\u8fdb\u884c\uff0c\u65e0\u9700\u78c1\u76d8 i\/o\u3002<\/p>\n<p>\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u5982\u4f55\u5229\u7528 tmpfs \u5c06\u6587\u4ef6\u5b58\u50a8\u5728\u5185\u5b58\u4e2d\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u5229\u7528 tmpfs \u5c06\u6587\u4ef6\u5b58\u50a8&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-205026","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205026","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=205026"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205026\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=205026"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=205026"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=205026"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}