{"id":10006552,"date":"2022-09-20T19:55:44","date_gmt":"2022-09-20T11:55:44","guid":{"rendered":"https:\/\/ityet.com\/?p=10006552"},"modified":"2022-09-20T19:55:44","modified_gmt":"2022-09-20T11:55:44","slug":"atc22%e9%a1%b6%e4%bc%9a%e8%ae%ba%e6%96%87rund%ef%bc%9a%e9%ab%98%e5%af%86%e9%ab%98%e5%b9%b6%e5%8f%91%e7%9a%84%e8%bd%bb%e9%87%8f%e7%ba%a7-serverless-%e5%ae%89%e5%85%a8%e5%ae%b9%e5%99%a8%e8%bf%90","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10006552","title":{"rendered":"ATC&#x27;22\u9876\u4f1a\u8bba\u6587RunD\uff1a\u9ad8\u5bc6\u9ad8\u5e76\u53d1\u7684\u8f7b\u91cf\u7ea7 Serverless \u5b89\u5168\u5bb9\u5668\u8fd0\u884c\u65f6 | \u9f99\u8725\u6280\u672f"},"content":{"rendered":"<p>\u7b80\u4ecb\uff1a\u00a0RunD\u53ef\u4ee5\u572888\u6beb\u79d2\u5185\u542f\u52a8\uff0c\u5e76\u4e14\u5728104\u6838384GB\u5185\u5b58\u7684\u5355\u8282\u70b9\u4e0a\u6bcf\u79d2\u542f\u52a8\u8d85\u8fc7200\u4e2a\u5b89\u5168\u5bb9\u5668\u3002\u7f16\u8005\u6309\uff1a\u76ee\u524d\u7684\u5b89\u5168\u5bb9\u5668\u8f6f\u4ef6\u6808 \u2014 \u5305\u62ec host \u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684 cgroup\u3001guest \u64cd\u4f5c\u7cfb\u7edf\u548c\u7528\u4e8e\u51fd\u6570\u5de5\u4f5c\u8d1f\u8f7d\u7684\u5bb9\u5668 rootfs\uff0c\u90fd\u4f1a\u5bfc\u81f4\u4f4e\u90e8\u7f72\u5bc6\u5ea6\u548c\u5728\u4f4e\u5e76\u53d1\u80fd\u529b\u3002\u4e3a\u6b64\uff0cRunD \u4f5c\u4e3a\u4e00\u79cd\u8f7b\u91cf\u7ea7\u5b89\u5168\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u63d0\u51fa\u4e86 host-to-guest \u7684\u5168\u6808\u4f18\u5316\u65b9\u6848\u6765\u89e3\u51b3\u4e0a\u8ff0\u95ee\u9898\u3002\u672c\u6587\u6574\u7406\u81ea\u9f99\u8725\u5927\u8bb2\u5802\u7b2c 38 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FireCracker \u90fd\u63d0\u4f9b\u4e86\u5b9e\u73b0\u8fd9\u79cd\u5b89\u5168\u5bb9\u5668\u7684\u5b9e\u8df5\u7ecf\u9a8c\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516796\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>(\u56fe1\/\u76ee\u524d\u4e3b\u6d41\u7684\u5b89\u5168\u5bb9\u5668\u6a21\u578b\uff0c\u4ee5\u53ca\u5bf9\u5e94\u7684\u8f6f\u4ef6\u6808\u67b6\u6784)\u00a0\u5728 Serverless \u573a\u666f\u4e0b\uff0c\u51fd\u6570\u7684\u8f7b\u91cf\u7ea7\u548c\u77ed\u671f\u8fd0\u884c\u7684\u7279\u6027\u4f7f\u5f97\u9ad8\u5bc6\u5ea6\u5bb9\u5668\u90e8\u7f72\u548c\u9ad8\u5e76\u53d1\u5bb9\u5668\u542f\u52a8\u5bf9\u4e8e\u65e0\u670d\u52a1\u5668\u8ba1\u7b97\u81f3\u5173\u91cd\u8981\u3002\u4f8b\u5982\uff0c47% \u7684 Lambdas \u5728 AWS \u4e0a\u8fd0\u884c\u7684\u6700\u5c0f\u5185\u5b58\u89c4\u683c\u662f 128MB\uff0c\u5728 Microsoft Azure \u4e2d\uff0c\u5927\u7ea6 90% \u7684\u5e94\u7528\u7a0b\u5e8f\u7684\u5185\u5b58\u6d88\u8017\u4ece\u672a\u8d85\u8fc7 400MB\u3002\u7531\u4e8e\u4e00\u4e2a\u7269\u7406\u8282\u70b9\u901a\u5e38\u6709\u5f88\u5927\u7684\u5185\u5b58\u7a7a\u95f4(\u5982 384GB)\uff0c\u5b83\u6309\u7406\u5e94\u8be5\u80fd\u591f\u90e8\u7f72\u5927\u91cf\u7684\u5bb9\u5668\u8bbe\u8ba1\u3002\u540c\u65f6\uff0c\u5927\u91cf\u7684\u51fd\u6570\u8c03\u7528\u53ef\u80fd\u4f1a\u5728\u77ed\u65f6\u95f4\u5185\u5230\u8fbe\u3002\u4f46\u662f\uff0c\u5b89\u5168\u5bb9\u5668\u7684\u989d\u5916\u5f00\u9500\u5927\u5927\u964d\u4f4e\u4e86\u51fd\u6570\u7684\u90e8\u7f72\u5bc6\u5ea6\u548c\u542f\u52a8\u5bb9\u5668\u7684\u5e76\u53d1\u6027\u3002\u00a0\u56fe1(b)\u663e\u793a\u4e86\u5b89\u5168\u5bb9\u5668\u7684\u8f6f\u4ef6\u6808\u5c42\u6b21\u7ed3\u6784\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\uff0cMicroVM \u4e2d\u7684 guest \u64cd\u4f5c\u7cfb\u7edf(GuestOS)\u548c host \u4e0a\u7684\u8d44\u6e90\u8c03\u5ea6\u90fd\u88ab\u8f6c\u4ea4\u7ed9\u4e91\u63d0\u4f9b\u5546\u8d1f\u8d23\u3002rootfs \u662f\u4e00\u4e2a\u6587\u4ef6\u7cfb\u7edf\uff0c\u5145\u5f53\u7528\u6237\u4ee3\u7801\u7684\u6267\u884c\u73af\u5883\u3002\u5b83\u662f\u7531 host \u521b\u5efa\u7684\uff0c\u5e76\u4f20\u9012\u7ed9 microVM \u4e2d\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\u3002\u5728 host \u7aef\uff0ccgroup \u7528\u4e8e\u4e3a\u5b89\u5168\u5bb9\u5668\u5206\u914d\u8d44\u6e90\uff0cCPU \u8c03\u5ea6\u5668\u8d1f\u8d23\u7ba1\u7406\u8d44\u6e90\u5206\u914d\u3002\u7531\u6b64\u53ef\u89c1\uff0c\u5b89\u5168\u5bb9\u5668\u7684\u590d\u6742\u5c42\u6b21\u7ed3\u6784\u5fc5\u5b9a\u4f1a\u5e26\u6765\u4e86\u590d\u6742\u3001\u9ad8\u989d\u7684\u989d\u5916\u5f00\u9500\u3002\u00a0\u672c\u6587\u4ee5\u00a0SOTA \u7684\u5f00\u6e90\u5b89\u5168\u5bb9\u5668\u6280\u672f Kata-containers\u00a0\u4e3a\u51fa\u53d1\u70b9\uff0c\u901a\u8fc7\u6df1\u5165\u5206\u6790\u4ece\u00a0host-to-guest \u67b6\u6784\u6808\u4e2d\u7684\u74f6\u9888\u70b9\uff0c\u63d0\u51fa\u4e86\u51fd\u6570\u8ba1\u7b97\u573a\u666f\u4e0b\u5b89\u5168\u5bb9\u5668\u9ad8\u5bc6\u9ad8\u90e8\u7f72\u7684 3 \u4e2a\u5173\u952e\u89c2\u5bdf\u548c\u6311\u6218\uff1a\u5bb9\u5668\u7684\u6587\u4ef6\u7cfb\u7edf\u53ef\u4ee5\u6839\u636e\u7528\u6237\u955c\u50cf\u53ea\u8bfb\u548c\u4e0d\u9700\u8981\u6301\u4e45\u5316\u7684\u7279\u70b9\u8fdb\u884c\u5b9a\u5236\uff1b\u5ba2\u6237\u673a\u4e2d\u7684\u64cd\u4f5c\u7cfb\u7edf\u57fa\u7840\u6620\u50cf\u7b49\u53ef\u4ee5\u5728\u591a\u4e2a\u5b89\u5168\u5bb9\u5668\u95f4\u5171\u4eab\u548c\u6309\u9700\u538b\u7f29\u4ee5\u964d\u4f4e\u5185\u5b58\u5f00\u9500\uff1b\u9ad8\u5e76\u53d1\u521b\u5efa cgroup \u4f1a\u5bfc\u81f4\u9ad8\u540c\u6b65\u65f6\u5ef6\uff0c\u5c24\u5176\u5728\u9ad8\u5bc6\u573a\u666f\u4e0b\u5e26\u6765\u7684\u9ad8\u8c03\u5ea6\u5f00\u9500\u3002\u4e3a\u6b64\u6211\u4eec\u63d0\u51fa\u4e86 RunD \u2014 \u8d85\u8f7b\u91cf\u7ea7\u5b89\u5168\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u901a\u8fc7\u5168\u6808\u7684 host-to-guest \u89e3\u51b3\u65b9\u6848\u4ee5\u63d0\u4f9b\u9ad8\u5bc6\u5ea6\u90e8\u7f72\u548c\u9ad8\u5e76\u53d1\u80fd\u529b\u7684\u652f\u6301\u3002RunD \u901a\u8fc7\u5f15\u5165\u8bfb\u5199\u5206\u79bb\u7684\u9ad8\u6548\u6587\u4ef6\u7cfb\u7edf\u3001\u9884\u8865\u4e01\u548c\u7cbe\u7b80\u7684 guest \u5185\u6838\u4ee5\u53ca\u4e00\u4e2a\u5168\u5c40\u53ef\u4f9b\u7ef4\u62a4\u7684 lightweight cgroup \u6c60\u4ee5\u89e3\u51b3\u4e0a\u8ff0\u7684\u4e09\u4e2a\u9ad8\u5bc6\u9ad8\u5e76\u53d1\u6311\u6218\u3002\u00a0\u6839\u636e\u6211\u4eec\u7684\u8bc4\u4f30\uff0cRunD \u542f\u52a8\u5230\u5e94\u7528\u7a0b\u5e8f\u4ee3\u7801\u53ea\u9700\u00a088ms\uff0c\u5e76\u4e14\u6bcf\u79d2\u53ef\u4ee5\u5728\u4e00\u4e2a\u8282\u70b9\u4e0a\u542f\u52a8 200 \u4e2a\u5b89\u5168\u5bb9\u5668\u3002\u5728\u4e00\u4e2a\u62e5\u6709 384GB \u5185\u5b58\u7684\u8282\u70b9\u4e0a\uff0c\u53ef\u4ee5\u4f7f\u7528 RunD \u90e8\u7f72\u8d85\u8fc7\u00a02500 \u4e2a\u5b89\u5168\u5bb9\u5668\u3002\u76ee\u524d RunD \u5df2\u7ecf\u4f5c\u4e3a Alibaba \u7684 Serverless \u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u670d\u52a1\u8d85\u8fc7\u00a0100 \u4e07\u4e2a\u51fd\u6570\uff0c\u6bcf\u5929\u8c03\u7528\u8fd1\u00a040 \u4ebf\u6b21\u3002\u5728\u7ebf\u7edf\u8ba1\u6570\u636e\u8868\u660e\uff0cRunD \u4f7f\u5f97\u6bcf\u4e2a\u8282\u70b9\u7684\u6700\u5927\u90e8\u7f72\u5bc6\u5ea6\u5df2\u7ecf\u8d85\u8fc7 2000 \u4e2a\u5bb9\u5668\uff0c\u5e76\u652f\u6301\u8d85\u8fc7 200 \u4e2a\u5bb9\u5668\u521b\u5efa\u7684\u5feb\u901f\u7aef\u5230\u7aef\u54cd\u5e94\u3002\u4e8c\u3001\u80cc\u666f\u901a\u8fc7\u4ee5\u4e0a\u4ecb\u7ecd\uff0c\u6211\u4eec\u4e86\u89e3\u4e86\u00a0RunD \u3002\u90a3\u4e48\u5728\u672c\u8282\u4e2d\uff0c\u6211\u4eec\u5c06\u9996\u5148\u8ba8\u8bba\u5f53\u524d\u5b89\u5168\u5bb9\u5668\u7684\u8bbe\u8ba1\uff0c\u4ee5\u53ca\u4e3a\u4f55\u9700\u8981\u5f15\u5165 RunD \u7684\u9700\u6c42\u30022.1 \u5b89\u5168\u5bb9\u5668\u6a21\u578b\u6839\u636e\u4e0d\u540c\u7ea7\u522b\u7684\u5b89\u5168\/\u9694\u79bb\u9700\u6c42\uff0c\u76ee\u524d Serverless \u7684\u751f\u4ea7\u73af\u5883\u4e2d\u901a\u5e38\u6709\u4e24\u7c7b\u4e3b\u6d41\u7684\u5b89\u5168\u5bb9\u5668\u6a21\u578b\u3002\u56fe2(a)\u663e\u793a\u4e86\u201d\u5355\u865a\u62df\u673a\u591a\u5bb9\u5668\u201c\u7684\u5b89\u5168\u5bb9\u5668\u6a21\u578b\u3002\u5728\u8be5\u6a21\u578b\u4e2d\uff0c\u4e00\u4e2a\u865a\u62df\u673a(VM)\u627f\u8f7d\u7740\u76f8\u540c\u51fd\u6570\u8c03\u7528\u7684\u5bb9\u5668\uff0c\u540c\u4e00\u865a\u62df\u673a\u4e2d\u7684\u5bb9\u5668\u5171\u4eab\u865a\u62df\u673a\u7684 guest \u64cd\u4f5c\u7cfb\u7edf\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5bf9\u4e0d\u540c\u51fd\u6570\u91c7\u7528 VM \u7ea7\u522b\u7684\u9694\u79bb\uff0c\u4f46\u5bf9\u540c\u4e00\u51fd\u6570\u7684\u4e0d\u540c\u8c03\u7528\u4e3a container \u7ea7\u522b\u9694\u79bb\u3002\u56e0\u4e3a\u6bcf\u4e2a\u51fd\u6570\u6240\u521b\u5efa\u548c\u6240\u9700\u8981\u7684\u5bb9\u5668\u6570\u91cf\u4e0d\u540c\uff0c\u8be5\u6a21\u578b\u4f1a\u5bfc\u81f4\u6f5c\u5728\u7684\u5185\u5b58\u788e\u7247\u3002\u867d\u7136\u6211\u4eec\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u56de\u6536\u5185\u5b58\u788e\u7247\uff0c\u4f46\u8fd9\u53ef\u80fd\u4f1a\u4e25\u91cd\u5f71\u54cd\u51fd\u6570\u6027\u80fd\uff0c\u751a\u81f3\u5728\u865a\u62df\u673a\u5185\u5b58\u70ed\u62d4\u5931\u8d25\u65f6\u5bfc\u81f4\u7a0b\u5e8f\u5d29\u6e83\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516797\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\uff08\u56fe2\/\u4e24\u79cd\u4e3b\u6d41\u7684\u5b89\u5168\u5bb9\u5668\u6a21\u578b\u9694\u79bb\uff09\u00a0\u56fe2(b)\u663e\u793a\u4e86\u9694\u79bb\u6bcf\u4e2a\u51fd\u6570\u8c03\u7528\u7684\u201c\u5355\u865a\u62df\u673a\u5355\u5bb9\u5668\u201d\u7684\u5b89\u5168\u5bb9\u5668\u6a21\u578b\u3002\u76ee\u524d\u7684\u65e0\u670d\u52a1\u5668\u8ba1\u7b97\u63d0\u4f9b\u5546\u4e3b\u8981\u4f7f\u7528\u8fd9\u79cd\u5b89\u5168\u5bb9\u5668\u6a21\u578b\u3002\u5728\u6b64\u6a21\u578b\u4e2d\uff0c\u6bcf\u4e2a\u8c03\u7528\u90fd\u5728\u4e00\u4e2a microVM \u4e2d\u7684\u5bb9\u5668\u4e2d\u9694\u79bb\u5e76\u6267\u884c\u51fd\u6570\u3002\u8fd9\u4e2a\u6a21\u578b\u6ca1\u6709\u5f15\u5165\u5185\u5b58\u788e\u7247\uff0c\u4f46\u662f\u865a\u62df\u673a\u672c\u8eab\u7684\u5185\u5b58\u5f00\u9500\u5f88\u5927\u3002\u5f88\u660e\u663e\uff0c\u6bcf\u4e2a microVM \u90fd\u9700\u8981\u8fd0\u884c\u5176\u4e13\u7528\u7684\u5ba2\u6237\u64cd\u4f5c\u7cfb\u7edf\uff0c\u4ece\u800c\u589e\u52a0\u4e86\u5185\u5b58\u5360\u7528\u3002\u5b89\u5168\u5bb9\u5668\u4f9d\u8d56\u4e8e\u786c\u4ef6\u865a\u62df\u5316\u548c VMM \u7684\u5b89\u5168\u6a21\u578b\uff0c\u901a\u8fc7\u7cfb\u7edf\u8c03\u7528\u68c0\u67e5\u663e\u5f0f\u5730\u5c06 guest \u5185\u6838\u89c6\u4e3a\u4e0d\u53ef\u4fe1\u73af\u5883\u3002\u5728\u8fd9\u79cd\u9694\u79bb\u548c\u5b89\u5168\u6027\u7684\u524d\u63d0\u4e0b\uff0cRunD \u4e3b\u8981\u9488\u5bf9\u201c\u5355\u865a\u62df\u673a\u5355\u5bb9\u5668\u201d\u7684\u5b89\u5168\u5bb9\u5668\u6a21\u578b\u30022.2 Serverless \u573a\u666f\u4e0b\u7684\u9700\u6c42\u5728 Serverless \u573a\u666f\u4e0b\u5982\u679c\u5e94\u7528\u5b89\u5168\u5bb9\u5668\u8fdb\u884c\u9694\u79bb\uff0c\u5929\u7136\u7684\u7ec6\u7c92\u5ea6\u9694\u79bb\u5e26\u6765\u4e86\u65b0\u7684\u590d\u6742\u573a\u666f\uff0c\u6211\u4eec\u9700\u8981\u6ee1\u8db3\u4e00\u4e2a\u786c\u6027\u9700\u6c42\u548c\u4e24\u4e2a\u884d\u751f\u9700\u6c42\uff1a\u9ad8\u901f\uff1a\u65e0\u670d\u52a1\u5668\u8ba1\u7b97\u7684\u6781\u81f4\u7684\u81ea\u52a8\u6269\u5c55\u80fd\u529b\u5141\u8bb8\u5b9e\u4f8b\u6570\u91cf\u6839\u636e\u8d1f\u8f7d\u7279\u6027\u52a8\u6001\u6a2a\u5411\u6269\u5c55\uff0c\u521b\u5efa\u901f\u5ea6\u8981\u5feb\uff0cE2E \u542f\u52a8\u65f6\u95f4\u8fbe\u5230\u767e\u6beb\u79d2\u7ea7\u3002\u5df2\u6709\u5927\u90e8\u5206\u5de5\u4f5c\u81f4\u529b\u4e8e\u89e3\u51b3\u76f8\u5173\u95ee\u9898\u3002\u4f46\u662f\u8fd8\u9700\u8981\u4fdd\u8bc1\u542f\u52a8\u65f6\u5ef6\u7684\u9c81\u68d2\u6027\uff0c\u4f7f\u5f97\u5176\u4e0d\u4f1a\u660e\u663e\u53d7\u5230\u8fd0\u884c\u65f6\u5e72\u6270\uff0c\u6bd4\u5982\u5f53\u524d\u5e76\u53d1\u6570\u548c\u90e8\u7f72\u5bc6\u5ea6\u7684\u5f71\u54cd\u3002\u9ad8\u9891\uff1a\u6bcf\u5929\u4e0a\u767e\u4e07\u7684\u5b9e\u4f8b\u521b\u5efa\u91cf\uff0c\u4e0a\u4ebf\u6b21\u7684\u51fd\u6570\u8c03\u7528\uff0c\u9700\u8981\u652f\u6491\u6bcf\u79d2\u5185\u5bb9\u5668\u7684\u9ad8\u5e76\u53d1\u521b\u5efa\u3002\u4e0e\u6b64\u540c\u65f6\uff0c\u65b0\u5174\u7684\u4e92\u8054\u7f51\u670d\u52a1\u5f80\u5f80\u5448\u73b0\u6ce2\u52a8\u7684\u8d1f\u8f7d\u6a21\u5f0f\uff08\u5982\u5916\u5356\u8f6f\u4ef6\u5728\u4e2d\u5348\u548c\u665a\u4e0a\u8d1f\u8f7d\u9ad8\uff0c\u5176\u4ed6\u65f6\u95f4\u6bb5\u8d1f\u8f7d\u4f4e\uff09\uff0c\u5e76\u51fa\u73b0\u7a81\u53d1\u8d1f\u8f7d\u3002\u5f53\u8d1f\u8f7d\u7206\u53d1\u65f6\uff0c\u9700\u8981\u521b\u5efa\u5927\u91cf\u7684\u5bb9\u5668\u3002\u867d\u7136\u76ee\u524d\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e9b\u6280\u672f\uff0c\u5982\u9884\u70ed\u5bb9\u5668\u6765\u7f13\u89e3\u5bb9\u5668\u51b7\u542f\u52a8\uff0c\u4f46\u7206\u53d1\u6027\u8d1f\u8f7d\u4f9d\u65e7\u4f1a\u975e\u5e38\u5bb9\u6613\u7684\u51fb\u7a7f\u9884\u70ed\u5bb9\u5668\u6c60\u3002\u5bf9\u4e8e\u65e0\u670d\u52a1\u5668\u5e73\u53f0\u6765\u8bf4\uff0c\u652f\u6301\u9ad8\u5e76\u53d1\u542f\u52a8\u7684\u80fd\u529b\u81f3\u5173\u91cd\u8981\u3002\u9ad8\u5bc6\uff1a\u5927\u91cf\u5bb9\u5668\u5171\u5b58\u4e8e\u5de5\u4f5c\u8282\u70b9\u4e2d\uff0c\u4e3a\u4fdd\u8bc1\u6781\u81f4\u5f39\u6027\u548c\u8d44\u6e90\u5229\u7528\u7387\uff0c\u9700\u8981\u8003\u8651\u5185\u5b58\u548c CPU \u8d44\u6e90\u5360\u7528\u95ee\u9898\u3002\u5982\u679c\u4e00\u4e2a\u5b89\u5168\u5bb9\u5668\u6ca1\u6709\u4efb\u52a1\u9694\u79bb\u5f00\u9500\uff0c\u62e5\u6709 256GB \u5185\u5b58\u7684\u8282\u70b9\u53ef\u4ee5\u6258\u7ba1 8\u00d7256 = 2048 \u4e2a\u5bb9\u5668\u3002\u5982\u679c\u6ca1\u6709\u7279\u522b\u7684\u4f18\u5316\uff0c\u5b89\u5168\u5bb9\u5668\u4f1a\u660e\u663e\u964d\u4f4e\u65e0\u670d\u52a1\u5668\u8ba1\u7b97\u4e2d\u7684\u90e8\u7f72\u5bc6\u5ea6\u3002\u5728\u76f8\u540c\u7684\u57fa\u7840\u8bbe\u65bd\u4e0b\uff0c\u589e\u52a0\u90e8\u7f72\u5bc6\u5ea6\u53ef\u4ee5\u6781\u5927\u5730\u63d0\u9ad8\u8d44\u6e90\u5229\u7528\u7387\u548c\u591a\u79df\u6237\u670d\u52a1\u6548\u7387\u3002\u4e09\u3001\u95ee\u9898\u5206\u6790\u548c\u89c1\u89e3\u5728\u672c\u8282\u4e2d\uff0c\u6211\u4eec\u5c06\u5206\u6790\u4f7f\u7528\u5b89\u5168\u5bb9\u5668\u5b9e\u73b0\u9ad8\u5e76\u53d1\u542f\u52a8\u548c\u9ad8\u5bc6\u5ea6\u90e8\u7f72\u7684\u95ee\u9898\u3002\u4f7f\u7528 Kata \u5bb9\u5668\u4f5c\u4e3a\u5b89\u5168\u5bb9\u5668\u8fd0\u884c\u65f6\u7684\u4ee3\u8868\u6765\u6267\u884c\u4ee5\u4e0b\u7814\u7a76\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516798\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u56fe3\/\u5e76\u53d1\u542f\u52a8Kata\u5bb9\u5668\u7684\u6b65\u9aa4\u3002\u5e76\u53d1\u74f6\u9888\u70b9\u5728\u4e8e\u521b\u5efarootfs\uff08\u7ea2\u8272\u5757\u6b65\u9aa41\uff09\u548c\u521b\u5efacgroups\uff08\u7ea2\u8272\u7ebf\u6b65\u9aa43\uff09\u5bc6\u5ea6\u74f6\u9888\u70b9\u5728\u4e8eMicroVM\u7684\u9ad8\u989d\u5185\u5b58\u5f00\u9500\uff08\u84dd\u8272\u5757\u6b65\u9aa42\uff09\u548c\u5927\u91cfcgroups\u7684\u8c03\u5ea6\u7ef4\u62a4\u5f00\u9500\uff08\u84dd\u8272\u5757\u6b65\u9aa43\uff09\u00a0\u56fe 3 \u663e\u793a\u4e86\u542f\u52a8 Kata \u5bb9\u5668\u7684\u6b65\u9aa4\u3002\u9996\u5148\uff0ccontainerd \u5e76\u53d1\u5730\u521b\u5efa\u5bb9\u5668\u8fd0\u884c\u65f6 Kata-runtime \u5e76\u51c6\u5907 runc \u5bb9\u5668\u7684 rootfs\u3002\u5176\u6b21\uff0chypervisor \u52a0\u8f7d GuestOS \u548c\u51c6\u5907\u597d\u7684 rootfs\uff0c\u5728 microVM \u4e2d\u542f\u52a8 runc \u5bb9\u5668\u3002\u7b2c\u4e09\uff0c\u51fd\u6570\u5de5\u4f5c\u8d1f\u8f7d\u88ab\u4e0b\u8f7d\u5230\u5bb9\u5668\u4e2d\uff0c\u7136\u540e\u5f00\u59cb\u8fd0\u884c\u3002\u00a0\u4e0e\u542f\u52a8\u4f20\u7edf\u5bb9\u5668\u76f8\u6bd4\uff0c\u5728\u542f\u52a8\u5b89\u5168\u5bb9\u5668\u65f6\uff0c\u6211\u4eec\u6709\u4e24\u4e2a\u89c2\u5bdf\u7ed3\u679c\u3002\u5f53\u5e76\u53d1\u542f\u52a8 100 \u4e2a\u6216\u66f4\u591a Kata \u5bb9\u5668\u65f6\uff0c\u5728\u51c6\u5907 Kata \u8fd0\u884c\u65f6\u521b\u5efa rootfs \u548c cgroup \u4f1a\u6709\u660e\u663e\u7684\u6027\u80fd\u4e0b\u964d\u3002\u8fd9\u79cd\u964d\u4f4e\u5bfc\u81f4\u542f\u52a8\u5bb9\u5668\u7684\u5e76\u53d1\u6027\u8f83\u4f4e\u3002\u5f53\u5728\u4e00\u4e2a 384GB \u5185\u5b58\u548c 104 \u4e2a\u6838\u7684\u8282\u70b9\u4e0a\u90e8\u7f72\u8d85\u8fc7 1000 \u4e2a 128MB \u5185\u5b58\u89c4\u683c\u7684 Kata \u5bb9\u5668\u65f6\uff0c\u865a\u62df\u673a\u7684\u5185\u5b58\u5360\u7528(guest\u5185\u6838\u548crootfs)\u5df2\u7ecf\u5360\u636e\u4e86\u5927\u90e8\u5206\u5185\u5b58\u7a7a\u95f4\u3002\u540c\u65f6\uff0c\u5bb9\u5668\u7684 I\/O \u6027\u80fd\u4e5f\u4f1a\u4e25\u91cd\u4e0b\u964d\u3002\u00a0\u56fe 3 \u8fd8\u663e\u793a\u4e86\u6211\u4eec\u53d1\u73b0\u7684\u5bfc\u81f4\u4e0a\u8ff0\u4e24\u4e2a\u7ed3\u679c\u7684\u4e09\u4e2a\u74f6\u9888\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u521b\u5efa rootfs \u548c cgroup \u7684\u4f4e\u6548\u4f1a\u5bfc\u81f4\u4f4e\u5bb9\u5668\u542f\u52a8\u5e76\u53d1\u3002\u8f83\u9ad8\u7684\u5185\u5b58\u5360\u7528\u548c\u8c03\u5ea6\u5f00\u9500\u5bfc\u81f4\u8f83\u4f4e\u7684\u5bb9\u5668\u90e8\u7f72\u5bc6\u5ea6\u3002\u6211\u4eec\u5c06\u5728\u4e0b\u9762\u7684\u5c0f\u8282\u4e2d\u5206\u6790\u5404\u4e2a\u74f6\u9888\u70b9\u30023.1 \u5bb9\u5668\u7684 rootfs \u7684\u9ad8\u65f6\u7a7a\u5f00\u9500\u5728 kata-runtime \u4e2d\uff0c\u5bb9\u5668\u7684 rootfs \u4e3b\u8981\u53ef\u4ee5\u9009\u62e9 9pfs\u3001devicemapper\u3001virtio-fs \u4e09\u79cd\u65b9\u6848\u30029pfs \u548c virtio-fs \u5c5e\u4e8e\u6587\u4ef6\u7ea7\u522b\u7684\u65b9\u6848\uff0cdevicemapper\u3001\u5c5e\u4e8e\u5757\u8bbe\u5907\u5c42\u65b9\u6848\u3002\u4e3a\u4e86\u9009\u62e9\u5408\u9002\u7684\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\u7684\u5bb9\u5668rootfs\u65b9\u6848\uff0c\u6211\u4eec\u9996\u5148\u9700\u8981\u5bf9\u6bd4 9p\u3001devicemapper \u548c virtio-fs \u65b9\u6848\u4e4b\u95f4\u7684\u6027\u80fd\uff0c\u4e3b\u8981\u5206\u4e3a buffer I\/O \u548c direct I\/O \u5728\u987a\u5e8f\u8bfb\u3001\u987a\u5e8f\u5199\u3001\u968f\u673a\u8bfb\u3001\u968f\u673a\u5199\u548c\u968f\u673a\u8bfb\u5199\u51e0\u4e2a\u65b9\u9762\uff0c\u5173\u6ce8 IOPS \u548c\u5e26\u5bbd\u6570\u636e\u3002\u53e6\u5916\u4e5f\u6d4b\u8bd5\u4e86 runc \u5728 host \u4e0a\u4f7f\u7528 ext4+overlayfs \u5b58\u50a8\u73af\u5883\u7684\u6570\u636e\u4f5c\u4e3a\u5bf9\u6bd4\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516799\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\uff08\u56fe4\/\u4f7f\u7528\u4e0d\u540crootfs\u5b9e\u73b0\u7684\u968f\u673a\u548c\u987a\u5e8f\u8bfb\u3001\u5199\u7684IOPS\u548c\u5e26\u5bbd\u6027\u80fd\uff09\u00a0\u5bf9\u6bd4\u4e0a\u8ff0\u4e09\u79cd\u65b9\u6848\uff0c\u6211\u4eec\u9996\u5148\u6452\u5f03\u57fa\u4e8e\u00a09p \u65b9\u6848\u7684\u9ad8\u5bc6\u9ad8\u5e76\u53d1\u5bb9\u5668\u67b6\u6784\uff0c\u539f\u56e0\u662f\u7531\u4e8e\u5176 mmap \u64cd\u4f5c\u4e0a POSIX \u8bed\u4e49\u517c\u5bb9\u6027\u95ee\u9898\u548c\u6027\u80fd\u8f83\u5dee\u3002\u7136\u540e\uff0c\u6211\u4eec\u5206\u522b\u6d4b\u8bd5\u4e86\u57fa\u4e8e devicemapper \u548c virtio-fs \u7684\u65b9\u6848\u6027\u80fd\uff0c\u5e76\u53d1\u73b0\u4e24\u79cd\u65b9\u6848\u5404\u81ea\u7684\u95ee\u9898\uff1a\u5728\u9ed8\u8ba4\u914d\u7f6e\u4e0b(\u5373writeback)\uff0cdevicemapper \u7684\u968f\u673a\/\u987a\u5e8f \u5199 \u6027\u80fd\u8f83\u597d\u3002\u4f46\u662f\u5728\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\u521b\u5efa\u3001\u5220\u9664\u6162\u3002\u5728\u6ca1\u6709 I\/O \u538b\u529b\u60c5\u51b5\u4e0b\uff0c\u521b\u5efa\u4e00\u4e2adevice mapper thin-lv \u9700\u8981 30-40ms \u7684\u65f6\u95f4\uff0c\u5728\u5927 I\/O \u538b\u529b\u4e0b\uff0c\u521b\u5efa\u65f6\u95f4\u53ef\u80fd\u4f1a\u5230\u79d2\u7ea7\u751a\u81f3 10s\u7ea7\uff0c\u9020\u6210\u521b\u5efa snapshot \u5931\u8d25\u548c\u5bb9\u5668\u521b\u5efa\u5931\u8d25\u3002\u9ad8\u5bc6\u573a\u666f\u4e0b\u5185\u5b58\u5f00\u9500\u9ad8\u3002devicemapper\u9700\u8981\u4e3a\u6bcf\u4e00\u4e2a microvm \u51c6\u5907 rootfs.img\uff0c\u4f46\u540c\u65f6\u53c8\u4e0d\u652f\u6301 host\/guest \u5171\u4eab volume \u529f\u80fd\uff0c\u4e8e\u662f virtio-blk backend \u8bfb\u53d6 host\u4e0arootfs image \u6587\u4ef6\u4f1a\u4ea7\u751f\u8fd9\u4e2a\u6587\u4ef6\u7684 host pagecache\uff1b\u5728 guest \u91cc\u518d\u8bfb\u53d6\u8fd9\u4e2a block \u8bbe\u5907\u5185\u5bb9\u65f6\uff0c\u5728 guest \u5185\u90e8\u4e5f\u4f1a\u4ea7\u751f\u4e00\u6b21\u540c\u6837\u5185\u5bb9\u7684pagecache\uff0c\u5c31\u5f62\u6210\u4e86 double pagecache\u3002virtio-fs \u662f\u4e13\u95e8\u4e3a KATA \u573a\u666f\u8bbe\u8ba1\u7684\u65b9\u6848\uff0c\u6709\u7740\u826f\u597d\u7684\u6027\u80fd\u548c\u5b8c\u5584\u7684 POSIX \u8bed\u4e49\u517c\u5bb9\u6027\u3002virtio-fs \u5728\u4f7f\u7528 DAX \u7684\u60c5\u51b5\u4e0b\uff0cdax+virtio-fs \u5404\u9879\u968f\u673a\/\u987a\u5e8f\u8bfb\u6027\u80fd\u6307\u6807\u90fd\u5f88\u597d\uff0c\u4f46\u662f\u5728\u9ad8\u5bc6\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\u5199\u6027\u80fd\u5f88\u5dee\uff0c\u540c\u65f6 virtiofsd \u627f\u8f7d\u5bb9\u5668\u8bfb\u5199\u7684\u538b\u529b\u65f6\uff0c\u4f1a\u9020\u6210 virtiofsd \u5728 host \u4e0a\u8fc7\u9ad8\u7684 CPU \u4f7f\u7528\u7387\u3002\u6240\u4ee5\u4e0d\u9002\u5408\u5927 I\/O \u538b\u529b\u573a\u666f\uff0c\u548c\u5927\u91cf\u5c0f\u6587\u4ef6\u6216\u8005 metadata \u64cd\u4f5c\u7684\u573a\u666f\u3002\u603b\u7ed3\u4e0b\u6765\uff0c\u6211\u4eec\u53ef\u4ee5\u5f97\u51fa\u8fd9\u6837\u7684\u89c1\u89e3\uff1a\u5728\u73b0\u6709 kata \u67b6\u6784\u548c\u5b58\u50a8\u65b9\u6848\u4e0b\uff0c\u4efb\u4f55\u5355\u4e00\u5b58\u50a8\u65b9\u6848\u4e0d\u9002\u7528\u4e8e\u9ad8\u5bc6\u9ad8\u5e76\u53d1\u7684\u573a\u666f\u3002\u9700\u8981\u5c06\u5bb9\u5668 rootfs \u7684\u5b58\u50a8\u53d8\u4e3a\u8bfb\u5199\u5206\u79bb\u6a21\u5f0f\uff0c\u5176\u4e2d\uff1a\u8bfb\u65b9\u9762\uff0c\u53ef\u4ee5\u4f7f\u7528 dax+virtio-fs \u65b9\u6848\u80fd\u591f\u5728\u4fdd\u8bc1\u6027\u80fd\u7684\u524d\u63d0\u4e0b\uff0c\u5171\u4eab host\/guest \u4e4b\u95f4 page cache\uff0c\u964d\u4f4e\u5185\u5b58\u5f00\u9500\u3002\u5199\u65b9\u9762\uff0c\u5e94\u7528\u73b0\u6709\u57fa\u4e8edevice mapper\u7684\u9ad8\u5f00\u9500\u65b9\u6848\u9700\u8981\u964d\u4f4e\u53ef\u5199\u5c42\u8bbe\u5907\u7684\u521b\u5efa\u65f6\u95f4\uff0c\u4ee5\u53ca\u89e3\u51b3 double pagecache \u7684\u95ee\u9898\u3002\u57fa\u4e8e virtio-fs \u7684\u4f4e\u6027\u80fd\u65b9\u6848\u9700\u8981\u6f14\u8fdb\u81f3\u6269\u5c55\u5230\u6ee1\u8db3\u5927 I\/O \u538b\u529b\u573a\u666f\u7684\u524d\u63d0\uff0c\u4ee5\u53ca\u964d\u4f4e host \u4e0a\u7684 CPU \u5f00\u9500\u3002\u56e0\u6b64\u73b0\u6709\u65b9\u6848\u90fd\u4e0d\u9002\u7528\uff0c\u9700\u8981\u5bfb\u627e\u66ff\u6362\u65b9\u6848\u30023.2 \u5355 MicroVM \u7684\u9ad8\u5185\u5b58\u7a7a\u95f4\u5f00\u9500\u5728\u9ad8\u5bc6\u4e0b\u5355\u4e2a\u5b9e\u4f8b\u8d44\u6e90\u76f4\u63a5\u5f71\u54cd\u90e8\u7f72\u5bb9\u5668\u6570\u91cf\u3002\u9ad8\u5bc6\u90e8\u7f72\u4e0b\u5355\u4e2a\u5b9e\u4f8b\u7684\u9664\u4e86\u63d0\u4f9b\u7ed9\u7528\u6237\u9700\u8981\u7684\u5185\u5b58\u89c4\u683c\u5927\u5c0f\u4ee5\u5916\uff0c\u5176\u4ed6\u7ec4\u4ef6\u7684\u8d44\u6e90\u5360\u7528\u5f80\u5f80\u662f\u4e00\u4e2a\u9ad8\u989d\u5f00\u9500\u3002firecracker \u5728\u53d1\u5e03\u65f6\u5c06\u5185\u5b58\u5360\u7528\u51cf\u5c11\u5230 5MB\uff0c\u4f46\u8fd9\u4e2a\u4ec5\u4ec5\u662f firecracker VMM \u7684\u5360\u7528\uff0c\u8fd0\u884c\u5185\u6838\u5305\u62ec\u4ee3\u7801\u6bb5\u3001\u6570\u636e\u6bb5\u7b49\uff0c\u4ee5\u53ca\u5185\u6838\u7ba1\u7406\u5185\u5b58\u7684 struct page\uff0c\u542f\u52a8\u7684 rootfs \u7b49\u5185\u5b58\u8d44\u6e90\uff0c\u4e0d\u80fd\u53ea\u4ece VMM \u7684\u5185\u5b58\u5360\u7528\u6765\u8bc4\u4f30\u5b9e\u4f8b\u7684\u989d\u5916\u5360\u7528\u3002\u6bd4\u5982\uff0c\u901a\u8fc7\u542f\u52a8\u6570\u4e2a AWS 128MB \u7684 lambda \u51fd\u6570\u5b9e\u9645\u7684\u5e73\u5747\u5185\u5b58\u5f00\u9500\u662f 71MB\uff0c\u4f20\u7edf\u7684 QEMU \u5e26\u6765\u7684\u5185\u5b58\u5f00\u9500\u5219\u66f4\u5927\uff0c\u8fbe\u5230\u4e86 145MB\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516800\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\uff08\u56fe5\/Kata\u5b89\u5168\u5bb9\u5668\u4f7f\u7528\u4e0d\u540chypervisor\u7684\u5e73\u5747\u5185\u5b58\u5f00\u9500\uff09\u00a0\u76ee\u524d\u00a0state-of-the-art \u7684\u65b9\u5f0f\u662f\u4f7f\u7528\u6a21\u7248\u6765\u89e3\u51b3 double page cache\u00a0\u4ee5\u5b9e\u73b0\u9ad8\u5bc6\u90e8\u7f72\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\u540c\u4e00\u53f0\u7269\u7406\u673a\u4e0a\u6bcf\u4e00\u4e2a\u5b89\u5168\u5bb9\u5668\u5b9e\u4f8b\u7684 guest \u5185\u6838\u90fd\u662f\u76f8\u540c\u7684\uff0c\u6a21\u7248\u5229\u7528 mmap \u6280\u672f\u66ff\u4ee3\u6587\u4ef6 IO \u64cd\u4f5c\uff0c\u5c06\u5185\u6838\u6587\u4ef6\u76f4\u63a5\u6620\u5c04\u5230 guest \u5185\u5b58\u4e2d\u3002\u8fd9\u6837\uff0cguest \u5185\u6838\u5c31\u53ef\u4ee5\u6309\u9700\u8f7d\u5165\u5185\u5b58\uff0c\u5e76\u4e14\u5176 text\/rodata segment \u53ef\u4ee5\u5728\u591a\u4e2a kata \u5b9e\u4f8b\u4e2d\u5171\u4eab\uff0c\u5e76\u4e14\u6a21\u677f\u4e2d\u6ca1\u6709\u88ab\u8bbf\u95ee\u5230\u7684\u5185\u5bb9\u4e5f\u4e0d\u4f1a\u88ab\u8f7d\u5165\u5230\u7269\u7406\u5185\u5b58\u4e2d\uff0c\u5b89\u5168\u5bb9\u5668\u5b9e\u4f8b\u7684\u5e73\u5747\u5185\u5b58\u7684\u6d88\u8017\u81ea\u7136\u5c31\u4f1a\u5927\u5927\u51cf\u5c11\u3002\u00a0\u7136\u800c\uff0c\u7531\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u4e2d\u7684\u81ea\u4fee\u6539\u4ee3\u7801\uff0c\u6a21\u677f\u6280\u672f\u5e76\u6ca1\u6709\u6211\u4eec\u60f3\u8c61\u7684\u90a3\u4e48\u9ad8\u6548\u3002\u81ea\u4fee\u6539\u4ee3\u7801\u6280\u672f\u5728\u8fd0\u884c\u65f6\u6309\u9700\u4fee\u6539\u6307\u4ee4\uff0cLinux \u5185\u6838\u5728\u5f88\u5927\u7a0b\u5ea6\u4e0a\u4f9d\u8d56\u4e8e\u81ea\u4fee\u6539\u4ee3\u7801\u6765\u63d0\u9ad8\u542f\u52a8\u548c\u8fd0\u884c\u65f6\u7684\u6027\u80fd\uff0c\u56e0\u6b64\u8fd9\u6837\u4f1a\u5bfc\u81f4\u6709\u8bb8\u591a\u672c\u5e94\u662f\u53ea\u8bfb\u7684\u5185\u5b58\u4f9d\u65e7\u88ab guest \u5185\u6838\u4fee\u6539\u3002\u6211\u4eec\u4ece\u4e00\u4e2a\u6a21\u677f\u542f\u52a8\u4e00\u4e2a\u5e26\u6709 CentOS 4.19 \u5185\u6838\u7684\u865a\u62df\u673a\uff0c\u6765\u7814\u7a76\u81ea\u4fee\u6539\u4ee3\u7801\u7684\u5f71\u54cd\u3002\u5f53\u901a\u8fc7\u6a21\u7248\u542f\u52a8\u4e00\u4e2a 128mb \u5b9e\u4f8b\u540e\uff0c\u53d1\u73b017M\uff0818432K\uff09\u7684 geust \u00a0kernel \u4ee3\u7801\u548c\u53ea\u8bfb\u6570\u636e\uff0c\u542f\u52a8\u8fc7\u7a0b\u4e2d\u5b9e\u9645\u53ea\u8bbf\u95ee\u4e86\u4e0d\u5230 10M\uff0810012K\uff09\uff0c\u4f46\u662f\u5728\u88ab\u8bbf\u95ee\u7684 10M \u6570\u636e\u4e2d\u5c45\u7136\u6709 7M\uff087928K\uff09\u591a\u7684\u6570\u636e\u88ab\u4fee\u6539\u4e86\u3002\u8fd9\u4e2a\u4f8b\u5b50\u8868\u660e\uff0c\u5f53\u4f7f\u7528 mmap \u6765\u51cf\u5c11\u5185\u6838\u6620\u50cf\u6587\u4ef6\u7684\u5185\u5b58\u6d88\u8017\u65f6\uff0c\u81ea\u4fee\u6539\u4ee3\u7801\u964d\u4f4e\u4e86\u5171\u4eab\u6548\u7387\u3002\u00a0\u56e0\u6b64\uff0c\u6211\u4eec\u7684\u7b2c\u4e8c\u4e2a\u89c1\u89e3\u662f\u7531\u4e8e kernel \u7684\u81ea\u4fee\u6539\u7279\u6027\u5bfc\u81f4\u5229\u7528\u6a21\u7248\u6280\u672f\u65f6\uff0c\u53ef\u4f9b\u5171\u4eab\u7684\u5185\u5b58\u6570\u91cf\u6709\u6240\u51cf\u5c11\u3002\u5982\u679c\u80fd\u89e3\u51b3\u5229\u7528\u6a21\u7248\u65f6\u521b\u5efa\u8fc7\u7a0b\u4e2d guest \u5185\u6838\u542f\u52a8\u65f6\u81ea\u4fee\u6539\u4ee3\u7801\uff0c\u6211\u4eec\u8fd8\u80fd\u8282\u7701\u66f4\u591a\u5185\u5b58\u4ee5\u8986\u76d6\u5927\u90e8\u5206\u52a8\u6001\u5185\u5b58\u6d88\u8017\u30023.3 cgroup \u7684\u9ad8 CPU \u65f6\u95f4\u5f00\u9500Cgroup \u662f\u4e3a\u8d44\u6e90\u63a7\u5236\u548c\u6d41\u7a0b\u62bd\u8c61\u800c\u8bbe\u8ba1\u7684\u3002\u5728 Serverless \u573a\u666f\u4e0b\uff0c\u51fd\u6570\u8c03\u7528\u7684\u9891\u7387\u663e\u793a\u51fa\u5f88\u5927\u7684\u53d8\u5316\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5e73\u53f0\u4f1a\u9891\u7e41\u521b\u5efa\u5e76\u56de\u6536\u76f8\u5e94\u7684\u5b89\u5168\u5bb9\u5668\u3002\u4f8b\u5982\uff0c\u5728\u6211\u4eec\u7684\u65e0\u670d\u52a1\u5668\u5e73\u53f0\u4e2d\uff0c\u5728\u4e00\u79d2\u949f\u5185\u6700\u591a\u53ef\u4ee5\u5728\u4e00\u4e2a\u7269\u7406\u8282\u70b9\u4e0a\u540c\u65f6\u521b\u5efa\u548c\u56de\u6536 200 \u4e2a\u5bb9\u5668\u3002\u9891\u7e41\u5730\u521b\u5efa\u548c\u56de\u6536\u5bf9\u4e3b\u673a\u7684 cgroup \u673a\u5236\u63d0\u51fa\u4e86\u6311\u6218\u3002\u00a0\u5f53\u5e76\u53d1\u521b\u5efa 2000 \u4e2a\u5bb9\u5668\u65f6\uff0c\u6211\u4eec\u6d4b\u91cf cgroup \u64cd\u4f5c\u7684\u76f8\u5173\u6307\u6807\u548c\u6027\u80fd\u56fe\u5982\u56fe 6 \u6240\u793a\u3002\u5728\u5b9e\u9a8c\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e0d\u540c\u6570\u91cf\u7684\u7ebf\u7a0b\u6765\u6267\u884c cgroup \u64cd\u4f5c\u3002\u56fe6(a)\u663e\u793a\u4e86\u5bb9\u5668\u521b\u5efa\u5ef6\u8fdf\u7684\u7d2f\u79ef\u5206\u5e03\u3002\u5355\u7ebf\u7a0b\u573a\u666f\u4e2d\uff0c \u5bb9\u5668\u542f\u52a8\u65f6\u521b\u5efa cgroup \u5e76\u521d\u59cb\u5316\u6240\u7528\u7684\u8017\u65f6\u7ea6\u4e3a 1ms\uff0c\u5728\u603b\u521b\u5efa\u7684 cgroup \u6570\u91cf\u76f8\u540c\uff0c\u591a\u7ebf\u7a0b\u5e76\u884c\u7684\u573a\u666f\u4e0b\uff0c\u4f4e\u5e76\u53d1\u542f\u52a8\u573a\u666f\u4e0b\u80fd\u591f\u83b7\u5f97\u5c11\u8bb8\u6027\u80fd\u63d0\u5347\u3002\u4f46\u5728\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\uff0c\u4e0e\u6211\u4eec\u7684\u76f4\u89c9\u76f8\u53cd\uff0c\u5c3d\u7ba1\u6bcf\u4e2a\u7ebf\u7a0b\u521b\u5efa\u7684 cgroup \u53d8\u5c11\u4e86\uff0c\u4f46\u603b\u8017\u65f6\u53cd\u800c\u589e\u52a0\u4e86\uff0c\u751a\u81f3\u4e0d\u5982\u5355\u7ebf\u7a0b\u7684\u8fde\u7eed\u64cd\u4f5c\u7684\u6548\u679c\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516801\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\uff08\u56fe6\/\u5e76\u53d1\u521b\u5efa2000\u4e2a\u5bb9\u5668\u65f6\u7684cgroup\u6027\u80fd\uff09\u00a0\u5176\u4e2d\u7684\u539f\u56e0\u662f\uff1acgroup \u5b9e\u73b0\u975e\u5e38\u590d\u6742\uff0c\u6d89\u53ca 10 \u591a\u7c7b\u8d44\u6e90\u63a7\u5236\uff08cgroup subsys\uff09\uff0c\u5185\u6838\u4e3a\u4e86\u7b80\u5316 cgroup \u7684\u8bbe\u8ba1\u5f15\u5165\u4e86 cgroup_mutex \uff0ccss_set_lock\u3001freezer_mutex\u3001freezer_lock \u7b49\u5927\u9501\uff0c\u4f7f\u5f97 cgroup \u76f8\u5173\u7684\u64cd\u4f5c\u90fd\u662f\u4e32\u884c\u5316\u7684\uff1b\u5728\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\uff0c\u5bfc\u81f4\u4e86\u6574\u4e2a\u521b\u5efa\u94fe\u8def\u4e0a\u7684\u4e32\u884c\u6267\u884c\u4f1a\u62d6\u6162\u5e76\u53d1\u521b\u5efa\u7684\u6548\u7387\uff0c\u589e\u52a0\u957f\u5c3e\u5ef6\u8fdf\u3002\u56fe6(b)\u663e\u793a\u4e86\u540c\u65f6\u4f7f\u7528 10 \u4e2a\u7ebf\u7a0b\u521b\u5efa 2000 \u4e2a cgroup \u7684\u706b\u7130\u56fe\u3002\u5728\u56fe\u4e2d\uff0c\u7ea2\u8272\u90e8\u5206\u663e\u793a\u201c\u4e92\u65a5\u9501\u201d\u88ab\u6fc0\u6d3b\u3002\u5f53 mutex \u4e2d\u9ed8\u8ba4\u4f7f\u7528\u4e86 osq_lock \u4e50\u89c2\u9501\u4f18\u5316\uff0c\u5728 cgroup \u62a2\u4e0d\u5230\u9501\u7684\u60c5\u51b5\u4e0b\u4f1a\u81ea\u65cb\u4e00\u4f1a\u513f\uff0c\u5bfc\u81f4\u591a\u7ebf\u7a0b\u573a\u666f\u5927\u91cf\u6d88\u8017 CPU \u8d44\u6e90\uff0c\u4e0d\u80fd\u53ca\u65f6\u9000\u51fa\u4e34\u754c\u533a\uff0c\u4ece\u800c\u5f71\u54cd\u6b63\u5728\u8fd0\u884c\u7684\u51fd\u6570\u5b9e\u4f8b\u3002\u00a0\u9664\u6b64\u4e4b\u5916\uff0ccgroup \u673a\u5236\u662f\u4e3a\u901a\u7528\u4e1a\u52a1\u573a\u666f\u8bbe\u8ba1\u7684\uff0c\u8bbe\u8ba1\u4e4b\u521d\u5e76\u6ca1\u6709\u8003\u8651\u5230\u4e91\u539f\u751f\u573a\u666f\u4f1a\u5982\u6b64\u5927\u89c4\u6a21\u7684\u4f7f\u7528\u5b83\u4eec \u3002\u5728\u4e00\u4e2a\u4e0a\u5343\u5bb9\u5668\u5171\u5b58\u7684faas\u8282\u70b9\u4e2d\uff0ccgroup \u603b\u6570\u8f7b\u677e\u7a81\u7834 1 \u4e07\u3002\u5728 CFS \u8c03\u5ea6\u5668\u4e2d\uff0c\u6709\u904d\u5386\u5404\u81ea cgroup subsys \u6240\u6709\u5bf9\u8c61\u7684\u884c\u4e3a\u3002\u5728\u9ad8\u5bc6\u573a\u666f\u4e0b\uff0c\u7cfb\u7edf\u4e2d cgroup \u6570\u91cf\u5f88\u591a\u65f6\uff0c\u5bfc\u81f4\u8c03\u5ea6\u5668\u4e2d\u7684\u70ed\u70b9\u51fd\u6570\u53d8\u4e3a\u74f6\u9888\uff0c\u5bfc\u81f4\u9ad8 CPU \u8c03\u5ea6\u5f00\u9500\u3002\uff08\u5360\u6574\u673a\u7684\u5e73\u5747\u8c03\u5ea6\u5f00\u9500\u7684 7.6%\uff09\u00a0\u9488\u5bf9\u4e0a\u8ff0\u53d1\u73b0\uff0c\u6211\u4eec\u7684\u7b2c\u4e09\u4e2a\u89c1\u89e3\u662f\uff0cServerless \u573a\u666f\u4e0b host \u4e0a\u7684 cgroup \u5b58\u5728\u9ad8\u5bc6\u9ad8\u5e76\u53d1\u7684\u74f6\u9888\uff0c\u9700\u8981\uff1a1\uff09\u964d\u4f4e cgroup \u4e2d\u7531\u4e8e mutex \u9501\u5f15\u5165\u7684\u201c\u4e34\u754c\u533a\u201d\u5927\u5c0f\uff0c\u6700\u597d\u662f\u6d88\u9664\uff1b2\uff09\u540c\u65f6\u7cbe\u7b80 cgroup \u7684\u529f\u80fd\uff0c\u540c\u65f6\u964d\u4f4e cgroup \u8bbe\u8ba1\u7684\u590d\u6742\u5ea6\u3002\u56db\u3001RunD \u8bbe\u8ba1\u548c\u5b9e\u73b0\u4e0a\u8ff0\u5206\u6790\u63ed\u793a\u4e86\u5728 host\u3001MicroVM\u3001guest \u4e09\u5c42\u67b6\u6784\u6808\u4e2d\u5b9e\u73b0\u9ad8\u5e76\u53d1\u542f\u52a8\u548c\u9ad8\u5bc6\u5ea6\u90e8\u7f72\u7684\u74f6\u9888\u3002\u4e3a\u6b64\uff0c\u6211\u4eec\u63d0\u51fa\u4e86\u00a0RunD\uff0c\u4e00\u4e2a\u6574\u4f53\u7684\u5b89\u5168\u5bb9\u5668\u89e3\u51b3\u65b9\u6848\uff0c\u89e3\u51b3\u4e86\u8de8\u5bb9\u5668\u7684\u91cd\u590d\u6570\u636e\u3001\u6bcf\u4e2a\u865a\u62df\u673a\u7684\u9ad8\u5185\u5b58\u5360\u7528\u548c host \u7aef cgroup \u7684\u9ad8\u5f00\u9500\u95ee\u9898\u3002\u5728\u672c\u8282\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u5c55\u793a RunD \u7684\u603b\u4f53\u8bbe\u8ba1\uff0c\u7136\u540e\u4ecb\u7ecd\u6bcf\u4e2a\u7ec4\u4ef6\u7684\u7ec6\u8282\uff0c\u4ee5\u89e3\u51b3\u76f8\u5e94\u7684\u95ee\u9898\u30024.1 \u603b\u4f53\u67b6\u6784\u53ca\u6d41\u7a0b\u5728\u8bbe\u8ba1 RunD \u65f6\uff0c\u6211\u4eec\u5f97\u5230\u4e86\u5173\u4e8e\u65e0\u670d\u52a1\u5668\u8fd0\u884c\u65f6\u7684\u4e00\u4e2a\u5173\u952e\u542f\u793a\u3002\u5728\u9ad8\u5bc6\u5ea6\u548c\u9ad8\u5e76\u53d1\u7684 Serverless \u573a\u666f\u4e2d\uff0c\u4f20\u7edfVM\u4e2d\u5fae\u4e0d\u8db3\u9053\u7684 host \u7aef\u5f00\u9500\u53ef\u80fd\u4f1a\u9020\u6210\u653e\u5927\u6548\u5e94\uff0c\u4efb\u4f55\u5fae\u4e0d\u8db3\u9053\u7684\u4f18\u5316\u90fd\u53ef\u4ee5\u5e26\u6765\u663e\u8457\u7684\u597d\u5904\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516802\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\uff08\u56fe7\/\u8f7b\u91cf\u7ea7Serverless\u8fd0\u884c\u65f6RunD\u67b6\u6784\u56fe\uff09\u56fe7\u663e\u793a\u4e86 RunD \u8bbe\u8ba1\u5e76\u603b\u7ed3\u4e86 host-to-guest \u7684\u5168\u6808\u89e3\u51b3\u65b9\u6848\u3002RunD \u8fd0\u884c\u65f6\u901a\u8fc7 virtio-fs \u63d0\u4f9b\u53ea\u8bfb\u5c42\uff0c\u4f7f\u7528 built-in storage \u4e3a virtio-blk \u521b\u5efa\u4e00\u4e2a\u975e\u6301\u4e45\u7684\u8bfb\u5199\u5c42\uff0c\u5e76\u4f7f\u7528 overlayfs \u5c06\u524d\u8005\u548c\u540e\u8005\u6302\u8f7d\u4e3a\u6700\u7ec8\u7684\u5bb9\u5668 rootfs\uff0c\u4ece\u800c\u8fdb\u884c\u8bfb\/\u5199\u5206\u79bb\u3002RunD \u5229\u7528\u96c6\u6210\u4e86\u7cbe\u7b80\u5185\u6838\u7684 microVM \u6a21\u677f\uff0c\u5e76\u91c7\u7528\u9884\u5904\u7406\u7684\u955c\u50cf\u521b\u5efa\u4e00\u4e2a\u65b0\u7684 microVM\uff0c\u8fdb\u4e00\u6b65\u5206\u644a\u4e86\u4e0d\u540c\u7684 microVM \u7684\u5f00\u9500\u3002\u5728\u521b\u5efa\u5b89\u5168\u5bb9\u5668\u65f6\uff0cRunD \u4ececgroup \u6c60\u7ed1\u5b9a\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684 cgroup \u8fdb\u884c\u8d44\u6e90\u7ba1\u7406\u3002\u00a0\u57fa\u4e8e\u4e0a\u8ff0\u4f18\u5316\uff0c\u5f53\u4f7f\u7528\u00a0RunD \u4f5c\u4e3a\u5b89\u5168\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u5b89\u5168\u5bb9\u5668\u5c06\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u542f\u52a8\uff1a\u7b2c\u4e00\u6b65\uff1a\u4e00\u65e6 containerd \u63a5\u6536\u5230\u7528\u6237\u8c03\u7528\uff0c\u5b83\u5c06\u8bf7\u6c42\u8f6c\u53d1\u7ed9 RunD \u8fd0\u884c\u65f6\u3002\u7b2c\u4e8c\u6b65\uff1aRunD \u4e3a\u865a\u62df\u673a hypervisor \u51c6\u5907 runc \u5bb9\u5668\u7684 rootfs\u3002rootfs \u88ab\u5206\u4e3a\u53ea\u8bfb\u5c42\u548c\u53ef\u5199\u5c42\u3002\u7b2c\u4e09\u6b65\uff1ahypervisor \u4f7f\u7528 microVM \u6a21\u677f\u521b\u5efa\u6240\u9700\u7684\u6c99\u7bb1\uff0c\u5e76\u901a\u8fc7 overlayfs \u5c06 rootfs \u6302\u8f7d\u5230\u6c99\u7bb1\u4e2d\u3002\u6700\u540e\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684 cgroup \u4ece cgroup \u6c60\u4e2d\u88ab\u91cd\u547d\u540d\uff0c\u7136\u540e\u7ed1\u5b9a\u5230\u6c99\u7bb1\u4e0a\uff0c\u7ba1\u7406\u8d44\u6e90\u4f7f\u7528\u30024.2 \u9ad8\u6548 rootfs \u8bfb\u5199\u5206\u79bb\u6211\u4eec\u5206\u6790\u4e86\u5bb9\u5668 rootfs \u4e2d\u7684\u9ad8\u5bc6\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\u5404\u79cd\u65b9\u6848\u7684\u4f18\u70b9\u4e0e\u7f3a\u70b9\u3002microvm \u4e2dcontainer rootfs \u6240\u9762\u4e34\u7684\u6839\u672c\u95ee\u9898\uff0c\u5176\u5b9e\u90fd\u662f\u6570\u636e\u6301\u4e45\u5316\u9700\u6c42\u6240\u5e26\u6765\u7684\u95ee\u9898\u3002\u4f20\u7edf\u5b58\u50a8\u9700\u6c42\u548c\u573a\u666f\u9700\u8981\u975e\u5e38\u9ad8\u7684\u7a33\u5b9a\u6027\u548c\u6570\u636e\u4e00\u81f4\u6027\uff0c\u4e5f\u5c31\u662f\u5728\u4efb\u4f55\u60c5\u51b5\u4e0b\u90fd\u4e0d\u80fd\u4e22\u6570\u636e\uff0c\u4f46\u6570\u636e\u6301\u4e45\u5316\u5728\u51fd\u6570\u8ba1\u7b97\u8fd9\u4e2a\u573a\u666f\u4e0b\u5b8c\u5168\u662f\u4e0d\u9700\u8981\u7684\uff0c\u6211\u4eec\u9700\u8981\u7684\u53ea\u662f\u4e00\u4e2a\u4e34\u65f6\u5b58\u50a8\uff0chost \u8282\u70b9\u5b95\u673a\u91cd\u542f\u6211\u4eec\u53ea\u9700\u8981\u91cd\u65b0\u521d\u59cb\u5316\u5e76\u62c9\u8d77\u65b0\u7684\u5bb9\u5668\uff0c\u4e4b\u524d\u7684\u6570\u636e\u90fd\u4e0d\u518d\u9700\u8981\u4e86\u3002\u6240\u4ee5\uff0c\u6211\u4eec\u5b8c\u5168\u53ef\u4ee5\u653e\u4e0b\u8fd9\u4e2a\u8d1f\u62c5\uff0c\u5e76\u4e14\u5145\u5206\u5229\u7528\u597d\u4e0d\u9700\u8981\u6301\u4e45\u5316\u7684\u4e34\u65f6\u5b58\u50a8\u8fd9\u4e2a\u7279\u6027\u3002\u00a0\u4e3a\u6b64\u6211\u4eec\u628a\u5bb9\u5668\u955c\u50cf\u5206\u6210\u53ea\u8bfb\u548c\u53ef\u5199\u4e24\u5c42\uff0c\u90a3\u4e48 containerd \u7684 snapshotter \u5e94\u8be5\u53ea\u8d1f\u8d23\u63d0\u4f9b\u955c\u50cf\u7684\u53ea\u8bfb\u5185\u5bb9\uff0c\u53ef\u5199\u5c42\u8d44\u6e90\u5e94\u8be5\u5c5e\u4e8e\u5177\u6709\u4e34\u65f6\u5b58\u50a8\u7279\u6027\u7684 sandbox\uff0c\u628a\u5bb9\u5668\u521b\u5efa\u548c\u53ef\u5199\u5c42\u8bbe\u5907\u521b\u5efa\u89e3\u8026\u5f00\u6765\u3002\u4e3a\u4e86\u8ba9\u53ef\u5199\u5c42\u8bbe\u5907\u540e\u7aef\u6587\u4ef6\u548c sandbox \u4e5f\u5c31\u662f rund \u7684\u751f\u547d\u5468\u671f\u7ed1\u5b9a\u5230\u4e00\u8d77\uff0c\u5e76\u4e14\u5c3d\u53ef\u80fd\u907f\u514d double pagecache \u7684\u95ee\u9898\uff0c\u6211\u4eec\u4f7f\u7528\u4e86 xfs \u6587\u4ef6\u7cfb\u7edf\u7684 reflink \u529f\u80fd\u5b9e\u73b0\u53ef\u5199\u5c42\u6587\u4ef6\u7684 CoW\uff0c\u540c\u65f6\u5229\u7528\u4e86open-but-unlinked \u6587\u4ef6\u7684\u7279\u6027\uff0c\u5728\u521b\u5efasandbox\u7684\u65f6\u5019\u53ea\u9700\u8981\u505a\u4e00\u6b21 reflink copy\uff0c\u6253\u5f00\u6587\u4ef6\u4e4b\u540e rund unlink \u6587\u4ef6\uff0c\u4e0d\u9700\u8981\u505a\u5176\u4ed6\u751f\u547d\u5468\u671f\u7ba1\u7406\u4e86\uff0c\u5b9e\u73b0\u4e86 sandbox \u9000\u51fa\u540e\u6587\u4ef6\u4f1a\u81ea\u52a8\u5220\u9664\u3002\u6211\u4eec\u5f15\u5165\u4e86\u7684\u67b6\u6784\u5982\u4e0b\u56fe 8 \u6240\u793a\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516803\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\uff08\u56fe8\/\u5bb9\u5668rootfs\u7684\u8bfb\u5199\u5206\u79bb\u5b9e\u73b0\uff09\u4f7f\u7528 overlay snapshotter\uff0c\u521b\u5efa\u5bb9\u5668\u955c\u50cf rootfs\uff0c\u5e76\u901a\u8fc7 virtiofs \u900f\u4f20\u7ed9 VM\uff0c\u4f5c\u4e3a\u5bb9\u5668 rootfs \u7684\u53ea\u8bfb\u5c42\u3002\u5c06\u628a reflink copy \u540e\u7684\u6587\u4ef6\u4f5c\u4e3a virtio-blk \u8bbe\u5907\u7684\u540e\u7aef\uff0c\u5c06 reflink copy \u540e\u7684\u53ef\u5199\u5c42\u6587\u4ef6\u4f5c\u4e3a block \u8bbe\u5907\u5185\u7f6e\u5728 microvm \u4e2d\u4f5c\u4e3a\u4e34\u65f6\u5b58\u50a8\uff0c\u4f5c\u4e3a\u5bb9\u5668 rootfs \u7684\u53ef\u5199\u5c42\u3002\u5728 VM \u5185\u4f7f\u7528 overlayfs\uff0cvirtiofs \u4f5c\u4e3a lower layer\uff0creflink \u6587\u4ef6\u7684\u6302\u8f7d\u70b9\u4f5c\u4e3aupper layer\uff0c\u6302\u8f7d\u6210 overlayfs\uff0c\u4f5c\u4e3a\u5bb9\u5668\u6700\u7ec8\u7684 rootfs\u3002\u901a\u8fc7 reflink \u65b9\u5f0f\u5b9e\u73b0\u53ef\u5199\u5c42\u6587\u4ef6\u7684 CoW\uff0c\u5e76\u4e14\u7531\u4e8e\u662f\u672c\u8d28\u4e0a\u662f block \u8bbe\u5907\u7684\u65b9\u6848\uff0c\u5728\u8bfb\u5199\u6027\u80fd\u4e0a\u548c devicemapper \u57fa\u672c\u6301\u5e73\u3002\u4e0e\u4f20\u7edf\u57fa\u4e8e\u5757\u8bbe\u5907\u7684 rootfs \u5b9e\u73b0\u65b9\u5f0f\u5bf9\u6bd4\uff0c\u5728 200 \u5bb9\u5668\u5e76\u53d1\u521b\u5efa\u7684\u573a\u666f\u4e0b\uff0creflink \u65b9\u5f0f\u7684\u78c1\u76d8\u4f7f\u7528\u7387\u663e\u8457\u4e0b\u964d (60% (4500 iops, 100MB\/s) -&gt; 20% (1500 iops, 8MB\/s))\uff0c\u521b\u5efa\u53ef\u5199\u5c42\u8bbe\u5907\u7684\u5e73\u5747\u65f6\u95f4\u4ece 207ms \u4e0b\u964d\u5230\u4e86 0.2ms\uff0c\u8db3\u8db3\u4e0b\u964d\u4e86 4 \u4e2a\u6570\u91cf\u7ea7\uff014.3 \u5185\u6838\u7cbe\u7b80\u548c\u4ee3\u7801\u81ea\u4fee\u6539\u8865\u4e01\u5728 Serverless \u7684\u573a\u666f\u4e0b\uff0cguest \u5185\u6838\u4e2d\u7684\u8bb8\u591a\u529f\u80fd\u662f\u4e0d\u5fc5\u8981\u4e14\u5360\u7528\u5185\u5b58\u7684\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u5728\u7f16\u8bd1\u7684\u65f6\u5019\u5173\u95ed\u8fd9\u4e9b\u9009\u9879\u3002\u7cbe\u7b80 guest \u5185\u6838\u65f6\uff0c\u6211\u4eec\u670d\u4ece\u4ee5\u4e0b\u539f\u5219\uff1a\u5c3d\u91cf\u964d\u4f4e\u5185\u5b58\u6d88\u8017\u4e0d\u635f\u5931 faas \u573a\u666f\u9700\u8981\u7684\u529f\u80fd\u57fa\u672c\u4e0d\u5f71\u54cd\u8fd0\u884c\u65f6\u6027\u80fd\u901a\u8fc7 case by case \u7684\u7cbe\u7b80\uff0c\u4f7f\u5f97\u5185\u5b58\u5f00\u9500\u4e0b\u964d\u4e86\u7ea6 16MB\uff0c\u5185\u6838\u6587\u4ef6\u4f53\u79ef\u4e0b\u964d\u4e86\u7ea64MB\u3002\u6211\u4eec\u9996\u5148\u5c06\u7cbe\u7b80\u8fc7\u7684 kernel \u548c\u4e0a\u8282\u4ecb\u7ecd\u7684 container rootfs \u5b58\u50a8\u5e94\u7528\u5728\u6a21\u677f\u6280\u672f\u4e2d\uff0c\u7136\u540e\u518d\u89e3\u51b3\u4ece\u6a21\u7248\u542f\u52a8\u5bb9\u5668\u540e\u5185\u6838\u81ea\u4fee\u6539\u7684\u95ee\u9898\u3002\u6211\u4eec\u53d1\u73b0\u5185\u6838\u4ee3\u7801\u6bb5\u7684\u81ea\u4fee\u6539\u53ea\u5b58\u5728\u4e8e\u542f\u52a8\u65f6\uff0c\u5728\u542f\u52a8\u540e\uff0c\u8fd9\u4e9b\u4ee3\u7801\u6bb5\u5c06\u4e0d\u518d\u4f1a\u88ab\u4fee\u6539\uff0c\u5e76\u4e14\u540c\u4e00\u7269\u7406\u673a\u4e2d\u7684\u6240\u6709 rund \u5b9e\u4f8b\u4e00\u822c\u90fd\u4f7f\u7528\u540c\u4e00\u5185\u6838\uff0c\u5b83\u4eec\u521d\u59cb\u5316\u8fc7\u7a0b\u662f\u5b8c\u5168\u76f8\u540c\u7684\uff0c\u56e0\u6b64\u5b83\u4eec\u4fee\u6539\u540e\u7684\u4ee3\u7801\u6bb5\u4e5f\u662f\u76f8\u540c\u7684\u3002\u4e8e\u662f\uff0c\u6211\u4eec\u4fbf\u53ef\u4ee5\u9884\u5148\u751f\u6210\u4e00\u4e2a\u81ea\u4fee\u6539\u4ee3\u7801\u6bb5\u540e\u7684\u5185\u6838\u6587\u4ef6\uff08pre-patched kernel image\uff09\uff0c\u5e76\u4e14\u4f7f\u7528\u5176\u66ff\u6362\u539f\u6765\u7684\u5185\u6838\u6587\u4ef6\uff0c\u8fd9\u6837\uff0c\u6211\u4eec\u5c31\u80fd\u591f\u5c3d\u53ef\u80fd\u591a\u5730\u5728\u4e0d\u540c\u5b89\u5168\u5bb9\u5668\u7684\u5b9e\u4f8b\u95f4\u5171\u4eab\u5185\u6838\u6587\u4ef6\u4e86\u3002\u4e3a\u4e86\u9002\u914d\u8fd9\u79cd\u6a21\u5f0f\uff0c\u6211\u4eec\u4e5f\u5bf9\u5185\u6838\u8fdb\u884c\u4e86\u5c11\u91cf hack \u5de5\u4f5c\uff0c\u4fee\u590d\u4e86\u4e00\u4e9b\u4f7f\u7528 pre-patched kernel image \u65f6\u53ef\u80fd\u5bfc\u81f4 kernel panic \u7684\u95ee\u9898\u3002\u4f7f\u7528\u6a21\u7248\u6280\u672f\u4e0d\u4ec5\u53ef\u4ee5\u964d\u4f4e\u5355\u4e2a\u5b9e\u529b\u7684\u5185\u5b58\u5360\u7528\u5b9e\u73b0\u9ad8\u5bc6\u90e8\u7f72\uff0c\u8fd8\u975e\u5e38\u9002\u5408\u5e94\u7528\u4e8e\u5b89\u5168\u5bb9\u5668\u7684\u9ad8\u5e76\u53d1\u573a\u666f\u3002\u56e0\u4e3a\u5b83\u53ef\u4ee5\u5728\u67d0\u4e2a\u7279\u5b9a\u65f6\u523b\u5bf9\u4e00\u4e2a\u5df2\u7ecf\u542f\u52a8\u7684\u5b89\u5168\u5bb9\u5668\u521b\u5efa\u5feb\u7167\uff0c\u5e76\u5c06\u5176\u4f5c\u4e3a\u5176\u5b83\u5b89\u5168\u5bb9\u5668\u7684\u542f\u52a8\u6a21\u677f\uff0c\u8fd9\u6837\u6211\u4eec\u5c31\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u6a21\u677f\u5feb\u901f\u62c9\u8d77\u591a\u4e2a\u5b89\u5168\u5bb9\u5668\u3002\u672c\u8d28\u5c31\u662f\u5c06\u6bcf\u4e2a\u5b89\u5168\u5bb9\u5668\u542f\u52a8\u8fc7\u7a0b\u4e2d\u7684\u76f8\u540c\u6b65\u9aa4\u7684\u7ed3\u679c\u8fdb\u884c\u8bb0\u5f55\uff0c\u7136\u540e\u76f4\u63a5\u8df3\u8fc7\u76f8\u540c\u6b65\u9aa4\uff0c\u76f4\u63a5\u57fa\u4e8e\u8be5\u4e2d\u95f4\u7ed3\u679c\u542f\u52a8\u5b89\u5168\u5bb9\u5668\u30024.4 \u8f7b\u91cf\u7ea7 cgroup \u548c\u6c60\u5316\u5728\u4e4b\u524d\u7684\u5c0f\u8282\u4e2d\u6211\u4eec\u5206\u6790\u4e86\u5728 host \u4e2d cgroup \u6210\u4e3a\u4e86\u5bb9\u5668\u5728\u9ad8\u5bc6\u9ad8\u5e76\u53d1\u4e0b\u7684\u74f6\u9888\u4e4b\u4e00\uff0c\u81ea\u7136\u7684\u60f3\u6cd5\u5c31\u662f\u51cf\u5c11 cgroup \u7684\u6570\u91cf\u548c\u76f8\u5173\u64cd\u4f5c\u3002\u6211\u4eec\u7684\u8fdb\u4e00\u6b65\u7814\u7a76\u63ed\u793a\u4e86\u4e24\u4e2a\u65b9\u9762\u7684\u4f18\u5316\u673a\u4f1a\uff1acgroup \u7684\u521b\u5efa\u548c\u9500\u6bc1\u6bd4\u8f83\u8017\u65f6\uff08\u4e34\u754c\u533a\u5f88\u5927\uff09\uff0c\u4e14\u4e0d\u80fd\u5e76\u884c\u5316\u3002\u4f46\u662fcgroup \u91cd\u547d\u540d\u662f\u4e00\u4e2a\u975e\u5e38\u8f7b\u91cf\u5316\u7684\u64cd\u4f5c\uff0c\u4e14\u4e0d\u6d89\u53ca\u5168\u5c40\u9501\u3002Serverless \u9ad8\u5bc6\u573a\u666f\u4e0b\uff0c\u6240\u9700\u8981\u7684 cgroup subsys \u7684\u5c42\u6b21\u7ed3\u6784\u662f\u786e\u5b9a\u7684\uff0c\u540c\u65f6\u4e00\u4e2a\u5355\u673a\u4e0a\u6240\u80fd\u521b\u5efa\u7684\u6700\u5927\u51fd\u6570\u5b9e\u4f8b\u6570\u91cf\u662f\u53ef\u4ee5\u9884\u5148\u5b9a\u4e49\u7684\u3002\u4e3a\u6b64\uff0c\u6211\u4eec\u4f7f\u7528\u8f7b\u91cf\u7ea7 cgroup (lightweight cgroup)\u7ba1\u7406\u6bcf\u4e2a RunD \u5b9e\u4f8b\u3002\u5982\u56fe 9 \u6240\u793a\uff0c\u6211\u4eec\u4f7f mount cgroup \u65f6\u5c06\u6240\u6709\u7684 cgroup subsys \uff08cpu, cpuacct, cpuset, blkio, memory, freezer\uff09\uff09\u805a\u5408\u5230\u4e00\u4e2a lightweight cgroup \u4e0a\uff0c\u8fd9\u5e2e\u52a9 RunD \u51cf\u5c11\u5bb9\u5668\u542f\u52a8\u65f6\u5197\u4f59\u7684 cgroup \u64cd\u4f5c\uff0c\u663e\u8457\u51cf\u5c11\u4e86cgroup \u548c\u7cfb\u7edf\u8c03\u7528\u7684\u603b\u6570\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516804\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\uff08\u56fe9\/\u8f7b\u91cf\u7ea7cgroup\u548c\u6c60\u5316\u8bbe\u8ba1\uff09\u540c\u65f6\u6211\u4eec\u7ef4\u62a4\u4e00\u4e2a cgroup \u00a0\u8d44\u6e90\u6c60\uff0c\u5c06\u6240\u6709\u521d\u59cb\u521b\u5efa\u7684 cgroup \u6807\u8bb0\u4e3a\u7a7a\u95f2\uff1b\u901a\u8fc7\u4e00\u4e2a mutex \u4fdd\u62a4\u7a7a\u95f2\u94fe\u8868\uff0c\u521b\u5efa\u4e00\u4e2a\u51fd\u6570\u5b9e\u4f8b\u65f6\uff0c\u4ece\u7a7a\u95f2\u94fe\u8868\u4e2d\u83b7\u53d6 cgroup\uff0c\u5e76\u6807\u8bb0\u4e3a\u4f7f\u7528\uff1b\u5f53\u5bb9\u5668\u542f\u52a8\u65f6\u5c06\u7ebf\u7a0b attach \u5230\u5bf9\u5e94\u5206\u914d\u7684 cgroup \u5373\u53ef\u3002\u5f53\u9500\u6bc1\u4e00\u4e2a\u51fd\u6570\u8ba1\u7b97\u5b9e\u4f8b\u65f6\uff0c\u53ea\u9700\u8981 kill \u5bf9\u5e94\u7684\u5b9e\u4f8b\u8fdb\u7a0b\uff0c\u4e0d\u9700\u8981\u5220\u9664 cgroup\uff1b\u5c06 cgroup \u8fd8\u4f1a\u8d44\u6e90\u6c60\uff0c\u6807\u8bb0\u4e3a\u7a7a\u95f2\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f cgroup \u8d44\u6e90\u6c60\u7ba1\u7406\u6d89\u53ca\u540c\u6b65\u548c\u4e92\u65a5\u95ee\u9898\uff0c\u5fc5\u987b\u8981\u4fdd\u8bc1\u8fd9\u4e2a\u4e34\u754c\u533a\u5f88\u5c0f\uff0c\u5426\u5219\u4e0d\u80fd\u8fbe\u5230\u63d0\u9ad8\u5e76\u884c\u5ea6\u7684\u6548\u679c\u3002\u00a0Lightweight cgroup \u6c60\u53bb\u9664\u4e86cgroup \u7684\u521b\u5efa\u548c\u521d\u59cb\u5316\u64cd\u4f5c\uff0c\u540c\u65f6\u5229\u7528cgroup rename \u673a\u5236\u4e3a\u65b0\u7684\u5b9e\u4f8b\u5206\u914d cgroup\uff0c\u6781\u5927\u7684\u7f29\u5c0f\u4e86\u4e34\u754c\u533a\uff0c\u63d0\u9ad8\u5e76\u884c\u6027\u3002\u901a\u8fc7\u8fd9\u4e00\u7b80\u5355\u601d\u60f3\uff0ccgroup \u64cd\u4f5c\u8017\u65f6\u5927\u5e45\u5ea6\u964d\u4f4e\uff0c\u521b\u5efa\u901f\u5ea6\u63d0\u5347\u4e86 15 \u500d\uff0c\u8fbe\u5230\u4e86\u8fd1 94% \u7684\u6027\u80fd\u4f18\u5316\u3002\u4e94\u3001\u6027\u80fd\u6d4b\u8bd55.1 \u5e76\u53d1\u5ea6\u6307\u6807\u6d4b\u8bd5<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516805\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516806\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>(\u56fe10\/\u9ad8\u5e76\u53d1\u521b\u5efa\u573a\u666f\u4e0b\u7aef\u5230\u7aef\u65f6\u5ef6\u3001\u5206\u5e03\u3001\u548cCPU\u5f00\u9500)\u00a0\u5e76\u53d1\u6027\u80fd\u603b\u7ed3\uff1aRunD \u80fd\u591f\u5728 88ms \u5185\u542f\u52a8\u4e00\u4e2a\u5355\u72ec\u6c99\u76d2\uff0c\u5e76\u5177\u5907\u5728 1 \u79d2\u5185\u540c\u65f6\u542f\u52a8 200 \u4e2a\u6c99\u7bb1\u7684\u5e76\u53d1\u80fd\u529b\uff0c\u4e0e\u73b0\u6709\u6280\u672f\u76f8\u6bd4\uff0c\u5177\u6709\u6700\u5c0f\u7684\u5ef6\u8fdf\u6ce2\u52a8\u548c CPU \u5f00\u9500\u30025.2 \u5355\u5b9e\u4f8b\u5f00\u9500\u548c\u90e8\u7f72\u5bc6\u5ea6\u6d4b\u8bd5<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516807\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\uff08\u56fe11\/\u4e0d\u540c\u8fd0\u884c\u65f6\u7684\u6c99\u7bb1\u5185\u5b58\u5f00\u9500\uff08100\u5bc6\u5ea6\u4e0b\uff09\uff09<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516808\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\uff08\u56fe12\/\u4e0d\u540c\u5bc6\u5ea6\u4e0b\u7684\u5e73\u5747\u5185\u5b58\u644a\u9500\uff08\u7f3a\u5931\u70b9\u8868\u793a\u5df2\u8fbe\u5230\u6700\u5927\u90e8\u7f72\u5bc6\u5ea6\uff09\uff09\u00a0\u9ad8\u5bc6\u90e8\u7f72\u603b\u7ed3\uff1aRunD \u652f\u6301\u5728\u5185\u5b58\u4e3a 384GB \u7684\u8282\u70b9\u4e0a\u90e8\u7f72\u8d85\u8fc7 2500 \u4e2a 128MB \u5185\u5b58\u89c4\u683c\u7684\u6c99\u76d2\u3002\u4e14\u6bcf\u4e2a\u6c99\u76d2\u7684\u5e73\u5747\u5185\u5b58\u5360\u7528\u5c0f\u4e8e 20MB\u30025.3 \u90e8\u7f72\u5bc6\u5ea6\u5bf9\u5e76\u53d1\u5ea6\u7684\u5f71\u54cd\u6d4b\u8bd5<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516809\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\uff08\u56fe13\/\u5728\u4e0d\u540c\u5bc6\u5ea6\u4e0b\u7684\u5e76\u53d1\u6027\u80fd(10c\/200c\u8868\u793a10\u5e76\u53d1\/200\u5e76\u53d1\uff0cDelta\u4ee3\u8868\u66f4\u9ad8\u5bc6\u5ea6\u5e26\u6765\u7684\u5f00\u9500\u589e\u91cf)\uff09\u00a0\u9ad8\u5bc6\u4e0b\u9ad8\u5e76\u53d1\u80fd\u529b\u603b\u7ed3\uff1a\u5728\u9ad8\u5bc6\u5ea6\u90e8\u7f72\u4e0b\uff0cRunD \u5728\u652f\u6301\u9ad8\u5e76\u53d1\u521b\u5efa\u65b9\u9762\u8868\u73b0\u51fa\u4e86\u66f4\u597d\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u603b\u7ed3\u6839\u636e\u5b9e\u9a8c\u8bc4\u4f30\uff0cRunD \u53ef\u4ee5\u5728 88 \u6beb\u79d2\u5185\u542f\u52a8\uff0c\u5e76\u4e14\u5728 104 \u6838 384GB \u5185\u5b58\u7684\u5355\u8282\u70b9\u4e0a\u6bcf\u79d2\u542f\u52a8\u8d85\u8fc7 200 \u4e2a\u5b89\u5168\u5bb9\u5668\uff0c\u9ad8\u5bc6\u90e8\u7f72\u8d85\u8fc7 2500 \u4e2a\u51fd\u6570\u5b9e\u4f8b\u3002RunD \u4f5c\u4e3a\u963f\u91cc\u4e91\u7684 Serverless \u8fd0\u884c\u65f6\u5df2\u7ecf\u90e8\u7f72\u4e0a\u7ebf\uff0c\u6bcf\u5929\u4e3a\u8d85\u8fc7 100 \u4e07\u4e2a\u51fd\u6570\u548c\u8fd1 40 \u4ebf\u7684\u8c03\u7528\u63d0\u4f9b\u670d\u52a1\uff0c\u5e76\u79ef\u6781\u63a8\u8fdb Kata \u793e\u533a 3.0 \u67b6\u6784\u7684\u6f14\u53d8\u3002\u2014\u2014 \u5b8c \u2014\u2014\u52a0\u5165\u9f99\u8725\u793e\u7fa4\u52a0\u5165\u5fae\u4fe1\u7fa4\uff1a\u6dfb\u52a0\u793e\u533a\u52a9\u7406-\u9f99\u8725\u793e\u533a\u5c0f\u9f99\uff08\u5fae\u4fe1\uff1aopenanolis_assis\uff09\uff0c\u5907\u6ce8\u3010\u9f99\u8725\u3011\u4e0e\u4f60\u540c\u5728\uff1b\u52a0\u5165\u9489\u9489\u7fa4\uff1a\u626b\u63cf\u4e0b\u65b9\u9489\u9489\u7fa4\u4e8c\u7ef4\u7801\u3002\u6b22\u8fce\u5f00\u53d1\u8005\/\u7528\u6237\u52a0\u5165\u9f99\u8725\u793e\u533a\uff08OpenAnolis\uff09\u4ea4\u6d41\uff0c\u5171\u540c\u63a8\u8fdb\u9f99\u8725\u793e\u533a\u7684\u53d1\u5c55\uff0c\u4e00\u8d77\u6253\u9020\u4e00\u4e2a\u6d3b\u8dc3\u7684\u3001\u5065\u5eb7\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edf\u751f\u6001\uff01<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516810\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u5173\u4e8e\u9f99\u8725\u793e\u533a\u9f99\u8725\u793e\u533a\uff08OpenAnolis\uff09\u662f\u7531\u4f01\u4e1a\u5355\u4f4d\u3001\u4e8b\u4e1a\u5355\u4f4d\u3001\u793e\u4f1a\u56e2\u4f53\u3001\u4e2a\u4eba\u7b49\u5728\u5171\u5efa\u3001\u5171\u6cbb\u3001\u5171\u4eab\u7684\u57fa\u7840\u4e0a\u7ec4\u6210\u7684\u975e\u8425\u5229\u6027\u5f00\u6e90\u793e\u533a\u3002\u9f99\u8725\u793e\u533a\u6210\u7acb\u4e8e 2020 \u5e74 9 \u6708\uff0c\u65e8\u5728\u6784\u5efa\u4e00\u4e2a\u5f00\u653e\u3001\u5e73\u7b49\u3001\u534f\u4f5c\u3001\u521b\u65b0\u7684 Linux \u4e0a\u6e38\u53d1\u884c\u7248\u793e\u533a\u53ca\u521b\u65b0\u5e73\u53f0\u3002\u00a0\u9f99\u8725\u793e\u533a\u6210\u7acb\u7684\u77ed\u671f\u76ee\u6807\u662f\u5f00\u53d1\u9f99\u8725\u64cd\u4f5c\u7cfb\u7edf(Anolis OS)\u4f5c\u4e3a CentOS \u505c\u670d\u540e\u7684\u5e94\u5bf9\u65b9\u6848\uff0c\u6784\u5efa\u4e00\u4e2a\u517c\u5bb9\u56fd\u9645 Linux \u4e3b\u6d41\u5382\u5546\u7684\u793e\u533a\u53d1\u884c\u7248\u3002\u4e2d\u957f\u671f\u76ee\u6807\u662f\u63a2\u7d22\u6253\u9020\u4e00\u4e2a\u9762\u5411\u672a\u6765\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5efa\u7acb\u7edf\u4e00\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edf\u751f\u6001\uff0c\u5b75\u5316\u521b\u65b0\u5f00\u6e90\u9879\u76ee\uff0c\u7e41\u8363\u5f00\u6e90\u751f\u6001\u3002\u00a0\u76ee\u524d\uff0cAnolis OS 8.6 \u5df2\u53d1\u5e03\uff0c\u66f4\u591a\u9f99\u8725\u81ea\u7814\u7279\u6027\uff0c\u652f\u6301 X86_64 \u3001RISC-V\u3001Arm64\u3001LoongArch \u67b6\u6784\uff0c\u5b8c\u5584\u9002\u914d Intel\u3001\u5146\u82af\u3001\u9cb2\u9e4f\u3001\u9f99\u82af\u7b49\u82af\u7247\uff0c\u5e76\u63d0\u4f9b\u5168\u6808\u56fd\u5bc6\u548c\u673a\u5bc6\u8ba1\u7b97\u652f\u6301\u3002\u00a0\u6b22\u8fce\u4e0b\u8f7d\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=PqMHHunhW6cQ9V7Wkis7Jg%3D%3D.vkcidHDsUhw7qtKAj3SXEzCBj1aVCK%2BcZ1oRPdl7hH0%3D\" 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href=\"https:\/\/segmentfault.com\/a\/1190000042516793\">https:\/\/segmentfault.com\/a\/1190000042516793<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb\uff1a\u00a0RunD\u53ef\u4ee5\u572888\u6beb\u79d2\u5185\u542f\u52a8\uff0c\u5e76\u4e14\u5728104\u6838384GB\u5185\u5b58\u7684\u5355\u8282\u70b9\u4e0a\u6bcf\u79d2\u542f\u52a8\u8d85\u8fc7200\u4e2a\u5b89\u5168\u5bb9\u5668\u3002\u7f16\u8005 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