{"id":7499,"date":"2026-07-24T21:01:54","date_gmt":"2026-07-24T13:01:54","guid":{"rendered":"https:\/\/i007.cc\/wordpress\/?p=7499"},"modified":"2026-07-24T21:01:54","modified_gmt":"2026-07-24T13:01:54","slug":"%e4%b8%80%e4%b8%aa%e5%87%bd%e6%95%b0%e6%98%af%e5%90%a6%e5%ba%94%e8%af%a5%e8%ae%be%e8%ae%a1%e6%88%90%e5%9c%a8%e5%8d%8f%e7%a8%8b%e4%b8%ad%e8%bf%90%e8%a1%8c%e7%9a%84%e5%88%a4%e6%96%ad%e6%a0%87%e5%87%86","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/7499","title":{"rendered":"\u4e00\u4e2a\u51fd\u6570\u662f\u5426\u5e94\u8be5\u8bbe\u8ba1\u6210\u5728\u534f\u7a0b\u4e2d\u8fd0\u884c\u7684\u5224\u65ad\u6807\u51c6\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"
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<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\u8fd9\u662f\u4e00\u4e2a\u6bd4\u770b\u8d77\u6765\u6df1\u5f97\u591a\u7684\u8bbe\u8ba1\u95ee\u9898\u3002\u5f88\u591a\u4eba\u51ed\u611f\u89c9\u51b3\u5b9a\uff0c\u5b9e\u9645\u4e0a\u6709\u6e05\u6670\u7684\u5224\u65ad\u6846\u67b6\u3002<\/p>\n

\n

\u6838\u5fc3\u5224\u65ad\u6807\u51c6\uff1a\u8fd9\u4e2a\u51fd\u6570\u4f1a\u4e0d\u4f1a”\u7b49\u5f85”\u67d0\u4e2a\u5916\u90e8\u4e8b\u4ef6\uff1f<\/h3>\n
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<\/div>\n<\/div>\n
\n
\u51fd\u6570\u6267\u884c\u671f\u95f4\uff0cCPU \u662f\u5426\u5728\u505a\u6709\u7528\u7684\u5de5\u4f5c\uff1f\r\n\r\n  \u662f \u2192 \u4e0d\u9700\u8981\u534f\u7a0b\uff08CPU \u5bc6\u96c6\u578b\uff0c\u7528\u7ebf\u7a0b\u5e76\u884c\uff09\r\n  \u5426 \u2192 CPU \u5728\u7a7a\u8f6c\u7b49\u5f85\u5916\u90e8\u54cd\u5e94 \u2192 \u8fd9\u5c31\u662f\u534f\u7a0b\u7684\u9002\u7528\u573a\u5408<\/pre>\n
 <\/p>\n<\/div>\n<\/div>\n
“\u5916\u90e8\u4e8b\u4ef6”\u5177\u4f53\u662f\u6307\uff1a\u7f51\u7edc\u54cd\u5e94\u3001\u78c1\u76d8 I\/O\u3001\u6570\u636e\u5e93\u67e5\u8be2\u3001\u5b9a\u65f6\u5668\u3001\u8fdb\u7a0b\u95f4\u901a\u4fe1\u3001\u786c\u4ef6\u4fe1\u53f7\u2014\u2014\u4efb\u4f55\u9700\u8981\u7b49\u5f85\u8fdb\u7a0b\u5916\u90e8<\/strong>\u7684\u4e1c\u897f\u3002<\/p>\n
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\u51b3\u7b56\u6811<\/h3>\n
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<\/div>\n<\/div>\n
\n
\u8fd9\u4e2a\u51fd\u6570\u8981\u505a\u4ec0\u4e48\uff1f\r\n\u2502\r\n\u251c\u2500\u2500 \u7eaf\u8ba1\u7b97\uff08\u6392\u5e8f\u3001\u52a0\u5bc6\u3001\u56fe\u50cf\u5904\u7406\u3001\u7269\u7406\u6a21\u62df\uff09\r\n\u2502       \u2514\u2500\u2500 \u274c \u4e0d\u8981 async\r\n\u2502           \u539f\u56e0\uff1a\u534f\u7a0b\u4e0d\u80fd\u8ba9 CPU \u8dd1\u5f97\u66f4\u5feb\uff0c\r\n\u2502                 async \u5f00\u9500\u53cd\u800c\u662f\u51c0\u635f\u8017\r\n\u2502           \u5982\u679c\u8017\u65f6 > \u51e0\u5341\u6beb\u79d2\uff1a\r\n\u2502               \u2514\u2500\u2500 \u7528\u7ebf\u7a0b\u6c60\u6267\u884c\uff0c\u7136\u540e await \u90a3\u4e2a\u7ebf\u7a0b\r\n\u2502\r\n\u251c\u2500\u2500 I\/O \u64cd\u4f5c\uff08\u7f51\u7edc\u3001\u78c1\u76d8\u3001\u6570\u636e\u5e93\uff09\r\n\u2502       \u2514\u2500\u2500 \u2705 \u5fc5\u987b async\r\n\u2502           \u539f\u56e0\uff1a\u7b49\u5f85\u671f\u95f4\u7ebf\u7a0b\u4ec0\u4e48\u90fd\u4e0d\u505a\uff0c\r\n\u2502                 \u91ca\u653e\u7ebf\u7a0b\u8ba9\u522b\u4eba\u7528\u662f\u7eaf\u6536\u76ca\r\n\u2502\r\n\u251c\u2500\u2500 \u7b49\u5f85\u65f6\u95f4\/\u4fe1\u53f7\uff08sleep\u3001timer\u3001\u6761\u4ef6\u53d8\u91cf\uff09\r\n\u2502       \u2514\u2500\u2500 \u2705 \u5fc5\u987b async\r\n\u2502           \u539f\u56e0\uff1a\u540c\u4e0a\uff0c\u7b49\u5f85\u671f\u95f4 CPU \u5b8c\u5168\u7a7a\u95f2\r\n\u2502\r\n\u251c\u2500\u2500 \u8c03\u7528\u4e86\u5176\u4ed6 async \u51fd\u6570\r\n\u2502       \u2514\u2500\u2500 \u2705 \u5fc5\u987b async\uff08\u4f20\u67d3\u6027\u51b3\u5b9a\u7684\uff09\r\n\u2502           \u552f\u4e00\u4f8b\u5916\uff1a\u7528 .GetAwaiter().GetResult() \u540c\u6b65\u7b49\u5f85\uff0c\r\n\u2502                     \u4f46\u8fd9\u4f1a\u963b\u585e\u7ebf\u7a0b\uff0c\u51e0\u4e4e\u603b\u662f\u9519\u7684\r\n\u2502\r\n\u2514\u2500\u2500 \u7eaf\u5185\u5b58\u64cd\u4f5c\uff08\u8bfb\u5199\u7f13\u5b58\u3001\u6570\u636e\u8f6c\u6362\u3001\u72b6\u6001\u67e5\u8be2\uff09\r\n        \u2514\u2500\u2500 \u274c \u4e0d\u8981 async\r\n            \u539f\u56e0\uff1a\u7eb3\u79d2\u7ea7\u64cd\u4f5c\uff0casync \u72b6\u6001\u673a\u5f00\u9500\u6bd4\u64cd\u4f5c\u672c\u8eab\u8fd8\u5927<\/pre>\n
 <\/p>\n<\/div>\n<\/div>\n
\n
\u4e09\u6761\u5177\u4f53\u539f\u5219<\/h3>\n
\u539f\u5219\u4e00\uff1a\u4ee5”\u662f\u5426\u8de8\u8fdb\u7a0b\u8fb9\u754c”\u4e3a\u754c<\/h4>\n
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\n
\u8fdb\u7a0b\u5185\u90e8\uff08\u5185\u5b58\u901f\u5ea6\uff09\uff1a\r\n  \u8bfb\u5199\u53d8\u91cf\u3001\u64cd\u4f5c\u96c6\u5408\u3001\u8c03\u7528\u672c\u5730\u51fd\u6570\r\n  \u2192 \u4e0d\u9700\u8981 async\uff0c\u51e0\u7eb3\u79d2\u5230\u51e0\u5fae\u79d2\uff0c\u534f\u7a0b\u5f00\u9500\u4e0d\u503c\u5f97\r\n\r\n\u8de8\u8fdb\u7a0b\u8fb9\u754c\uff08I\/O \u901f\u5ea6\uff09\uff1a\r\n  \u6570\u636e\u5e93\u67e5\u8be2\u3001HTTP \u8bf7\u6c42\u3001\u8bfb\u6587\u4ef6\u3001\u6d88\u606f\u961f\u5217\r\n  \u2192 \u5fc5\u987b async\uff0c\u6beb\u79d2\u7ea7\u7b49\u5f85\uff0c\u7ebf\u7a0b\u91ca\u653e\u4ef7\u503c\u6781\u9ad8<\/pre>\n
 <\/p>\n<\/div>\n<\/div>\n
\u8fd9\u6761\u539f\u5219\u5728\u7edd\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u7ed9\u51fa\u6b63\u786e\u7b54\u6848\u3002<\/p>\n
\u539f\u5219\u4e8c\uff1a\u533a\u5206”\u5e76\u53d1”\u548c”\u5e76\u884c”<\/h4>\n
\u534f\u7a0b\u89e3\u51b3\u5e76\u53d1\uff08\u540c\u65f6\u7b49\u591a\u4ef6\u4e8b\uff09<\/strong>\uff0c\u4e0d\u89e3\u51b3\u5e76\u884c\uff08\u540c\u65f6\u7b97\u591a\u4ef6\u4e8b\uff09\u3002<\/p>\n
\n
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<\/div>\n<\/div>\n
csharp<\/div>\n
\n
\/\/ \u9519\u8bef\u7528\u6cd5\uff1aCPU \u5bc6\u96c6\u578b\u4efb\u52a1\u5305\u4e0a async \u6ca1\u6709\u610f\u4e49\r\nasync Task<int> WrongAsync(int[] data) {\r\n    \/\/ \u8fd9\u91cc\u6839\u672c\u6ca1\u6709 await\uff0casync \u662f\u5047\u7684\r\n    \/\/ \u7f16\u8bd1\u5668\u4f1a\u8b66\u544a\uff0c\u800c\u4e14\u5b8c\u5168\u6ca1\u6709\u6027\u80fd\u6536\u76ca\r\n    return data.Sum();\r\n}\r\n\r\n\/\/ CPU \u5bc6\u96c6\u578b\u7684\u6b63\u786e\u505a\u6cd5\uff1a\u6254\u5230\u7ebf\u7a0b\u6c60\uff0c\u7136\u540e await\r\nasync Task<int> CpuBoundCorrect(int[] data) {\r\n    return await Task.Run(() => HeavyComputation(data));\r\n    \/\/ \u8fd9\u91cc await \u7b49\u7684\u662f\"\u7ebf\u7a0b\u6c60\u91cc\u7684\u4e00\u4e2a\u7ebf\u7a0b\u5b8c\u6210\u8ba1\u7b97\"\r\n    \/\/ \u5f53\u524d\u7ebf\u7a0b\u5728\u8fd9\u671f\u95f4\u53ef\u4ee5\u505a\u522b\u7684\u4e8b\r\n}\r\n\r\n\/\/ I\/O \u7684\u6b63\u786e\u505a\u6cd5\uff1a\u76f4\u63a5 async\r\nasync Task<string> IoCorrect(string url) {\r\n    return await httpClient.GetStringAsync(url);\r\n    \/\/ \u7b49\u5f85\u671f\u95f4\u4e0d\u5360\u7528\u4efb\u4f55\u7ebf\u7a0b\r\n}<\/pre>\n
 <\/p>\n<\/div>\n<\/div>\n
\u4e24\u8005\u7684\u672c\u8d28\u5dee\u5f02<\/strong>\uff1a<\/p>\n
    \n
  • CPU \u4efb\u52a1\uff1a\u7b49\u5f85\u671f\u95f4 CPU \u5728\u522b\u5904\u5fd9\u7740\u7b97\uff0c\u603b CPU \u5229\u7528\u7387\u6ca1\u53d8<\/li>\n
  • I\/O \u4efb\u52a1\uff1a\u7b49\u5f85\u671f\u95f4 CPU \u5b8c\u5168\u7a7a\u95f2\uff0c\u91ca\u653e\u7ebf\u7a0b\u662f\u7eaf\u6536\u76ca<\/li>\n<\/ul>\n
    \u539f\u5219\u4e09\uff1a\u51fd\u6570\u8017\u65f6\u51b3\u5b9a async \u7684\u7ecf\u6d4e\u6027<\/h4>\n
    \u534f\u7a0b\u72b6\u6001\u673a\u672c\u8eab\u6709\u5f00\u9500\uff08\u7ea6 100ns \u7ea7\u522b\uff0c\u5305\u62ec\u5806\u5206\u914d\u3001\u72b6\u6001\u673a\u8df3\u8f6c\u3001\u8c03\u5ea6\u5668\u4ecb\u5165\uff09\u3002<\/p>\n
    \n
    \n
    <\/div>\n<\/div>\n
    \n
    \u51fd\u6570\u5b9e\u9645\u6267\u884c\u65f6\u95f4    async \u662f\u5426\u503c\u5f97\uff1f\r\n< 1 \u03bcs            \u274c \u7edd\u5bf9\u4e0d\u8981\uff0c\u5f00\u9500\u6bd4\u5de5\u4f5c\u672c\u8eab\u5927\r\n1 \u03bcs ~ 1 ms       \u26a0\ufe0f  \u53d6\u51b3\u4e8e\u5e76\u53d1\u91cf\uff0c\u901a\u5e38\u4e0d\u503c\u5f97\r\n> 1 ms\uff08\u542b I\/O\uff09  \u2705 \u5fc5\u987b\uff0c\u7ebf\u7a0b\u91ca\u653e\u4ef7\u503c\u8fdc\u8d85\u5f00\u9500<\/pre>\n
     <\/p>\n<\/div>\n<\/div>\n
    \n
    \u51e0\u4e2a\u5bb9\u6613\u8bef\u5224\u7684\u573a\u666f<\/h3>\n
    \u573a\u666f\u4e00\uff1a\u5f88\u5feb\u5b8c\u6210\u7684 I\/O<\/h4>\n
    \n
    \n
    <\/div>\n<\/div>\n
    csharp<\/div>\n
    \n
    \/\/ Redis \u672c\u673a\u67e5\u8be2\u8017\u65f6\u7ea6 0.1ms\uff0c\u8981 async \u5417\uff1f\r\nasync Task<string> GetFromLocalRedis(string key) {\r\n    return await redis.GetAsync(key);\r\n}<\/pre>\n
     <\/p>\n<\/div>\n<\/div>\n
    \u7b54\u6848\uff1a\u8981\u3002<\/strong>\u00a0\u867d\u7136 0.1ms \u5f88\u77ed\uff0c\u4f46\u5982\u679c\u4f60\u6709 10 \u4e07\u5e76\u53d1\u8bf7\u6c42\u540c\u65f6\u67e5 Redis\uff0c\u540c\u6b65\u7248\u672c\u9700\u8981 10 \u4e07\u4e2a\u7ebf\u7a0b\uff08800GB \u5185\u5b58\uff09\uff0casync \u7248\u672c\u53ea\u9700\u8981\u51e0\u5341\u4e2a\u7ebf\u7a0b\u3002\u5224\u65ad\u6807\u51c6\u4e0d\u662f\u5355\u6b21\u8017\u65f6\uff0c\u800c\u662f\u5e76\u53d1\u89c4\u6a21\u4e0b\u7684\u603b\u7ebf\u7a0b\u5360\u7528<\/strong>\u3002<\/p>\n
    \u573a\u666f\u4e8c\uff1a\u6709\u65f6\u540c\u6b65\u6709\u65f6\u5f02\u6b65<\/h4>\n
    \n
    \n
    <\/div>\n<\/div>\n
    csharp<\/div>\n
    \n
    \/\/ \u5148\u67e5\u5185\u5b58\u7f13\u5b58\uff08\u7eb3\u79d2\uff09\uff0c\u6ca1\u6709\u518d\u67e5\u6570\u636e\u5e93\uff08\u6beb\u79d2\uff09\r\nasync Task<User> GetUser(int id) {\r\n    if (cache.TryGet(id, out var user))\r\n        return user;  \/\/ \u540c\u6b65\u8def\u5f84\uff0casync \u5f00\u9500\u767d\u4ed8\u4e86\r\n\r\n    return await db.QueryAsync<User>(id);  \/\/ \u5f02\u6b65\u8def\u5f84\r\n}<\/pre>\n
     <\/p>\n<\/div>\n<\/div>\n
    \u8fd9\u79cd\u60c5\u51b5\u5728 C# \u91cc\u7528\u00a0ValueTask<\/code>\u00a0\u4f18\u5316\u2014\u2014\u540c\u6b65\u5b8c\u6210\u65f6\u4e0d\u4ea7\u751f\u5806\u5206\u914d\uff1a<\/p>\n
    \n
    \n
    <\/div>\n<\/div>\n
    csharp<\/div>\n
    \n
    ValueTask<User> GetUser(int id) {\r\n    if (cache.TryGet(id, out var user))\r\n        return new ValueTask<User>(user);  \/\/ \u96f6\u5206\u914d\r\n    \r\n    return new ValueTask<User>(db.QueryAsync<User>(id));\r\n}<\/pre>\n
     <\/p>\n<\/div>\n<\/div>\n
    Rust \u7684\u00a0async fn<\/code>\u00a0\u4e5f\u6709\u7c7b\u4f3c\u7684\u9759\u6001\u5206\u6d3e\u4f18\u5316\u3002<\/p>\n
    \u573a\u666f\u4e09\uff1a\u7eaf CPU \u4efb\u52a1\u4f46\u8017\u65f6\u6781\u957f<\/h4>\n
    \n
    \n
    <\/div>\n<\/div>\n
    csharp<\/div>\n
    \n
    \/\/ \u5904\u7406\u4e00\u4e2a 10GB \u7684\u6587\u4ef6\uff0c\u7eaf CPU \u89e3\u6790\uff0c\u8017\u65f6 30 \u79d2\r\n\/\/ \u76f4\u63a5 async \u6ca1\u610f\u4e49\uff0c\u4f46\u4e5f\u4e0d\u80fd\u963b\u585e\u8c03\u7528\u8005 30 \u79d2<\/pre>\n
     <\/p>\n<\/div>\n<\/div>\n
    \u6b63\u786e\u505a\u6cd5\u662f\u663e\u5f0f\u6254\u5230\u7ebf\u7a0b\u6c60<\/strong>\uff0c\u8ba9\u8c03\u7528\u8005\u53ef\u4ee5 await\uff1a<\/p>\n
    \n
    \n
    <\/div>\n<\/div>\n
    csharp<\/div>\n
    \n
    Task<Result> ProcessHugeFile(string path) {\r\n    return Task.Run(() => {\r\n        \/\/ \u5728\u7ebf\u7a0b\u6c60\u7ebf\u7a0b\u4e0a\u505a CPU \u5bc6\u96c6\u578b\u5de5\u4f5c\r\n        return SynchronousHeavyParsing(path);\r\n    });\r\n}\r\n\r\n\/\/ \u8c03\u7528\u8005\uff1a\r\nvar result = await ProcessHugeFile(path);  \/\/ \u4e0d\u963b\u585e UI\/\u8bf7\u6c42\u7ebf\u7a0b<\/pre>\n
     <\/p>\n<\/div>\n<\/div>\n
    \n
    \u5e93\u8bbe\u8ba1\u65f6\u7684\u7279\u6b8a\u8003\u91cf<\/h3>\n
    \u5982\u679c\u4f60\u5728\u5199\u4f9b\u4ed6\u4eba\u4f7f\u7528\u7684\u5e93\uff0c\u8fd8\u6709\u4e00\u4e2a\u989d\u5916\u7ef4\u5ea6\uff1a\u4f60\u7684\u7528\u6237\u662f\u8c01\uff1f<\/strong><\/p>\n
    \n
    \n
    <\/div>\n<\/div>\n
    \n
    \u7528\u6237\u4e3b\u8981\u662f UI \u5e94\u7528\uff08WPF\u3001MAUI\uff09\uff1a\r\n  \u2192 \u5fc5\u987b\u63d0\u4f9b async\uff0c\u540c\u6b65\u7248\u672c\u4f1a\u51bb\u7ed3 UI\r\n\r\n\u7528\u6237\u4e3b\u8981\u662f\u547d\u4ee4\u884c\u5de5\u5177\u6216\u811a\u672c\uff1a\r\n  \u2192 async \u6536\u76ca\u6709\u9650\uff0c\u540c\u6b65\u7248\u672c\u66f4\u7b80\u5355\r\n\r\n\u7528\u6237\u662f\u9ad8\u5e76\u53d1\u670d\u52a1\u5668\uff1a\r\n  \u2192 \u5fc5\u987b async\uff0c\u8fd9\u662f\u751f\u6b7b\u7ebf\r\n\r\n\u7528\u6237\u4e0d\u786e\u5b9a\uff1a\r\n  \u2192 \u63d0\u4f9b async \u7248\u672c\uff0c\u540c\u6b65\u7248\u672c\u901a\u8fc7\u5c01\u88c5\u63d0\u4f9b\r\n    \uff08\u4f46\u4e0d\u8981 sync-over-async\uff0c\u4f1a\u6b7b\u9501\uff09<\/pre>\n
     <\/p>\n<\/div>\n<\/div>\n
    .NET \u751f\u6001\u91cc”\u540c\u6b65\u7248 + \u5f02\u6b65\u7248\u5e76\u5b58”\u7684\u53cc\u8f68\u56f0\u5883\uff0c\u6b63\u662f\u56e0\u4e3a\u65e9\u671f\u6ca1\u6709\u60f3\u6e05\u695a\u8fd9\u4e2a\u95ee\u9898\uff0c\u5bfc\u81f4\u540e\u6765\u4e0d\u5f97\u4e0d\u4e3a\u6bcf\u4e2a API \u7ef4\u62a4\u4e24\u5957\u5b9e\u73b0\u3002<\/p>\n
    \n
    \u4e00\u5f20\u51b3\u7b56\u5361\u7247<\/h3>\n
    \n
    \n
    <\/div>\n<\/div>\n
    \n
    \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\r\n\u2502              \u8fd9\u4e2a\u51fd\u6570\u8981\u4e0d\u8981 async\uff1f                   \u2502\r\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\r\n\u2502                                                     \u2502\r\n\u2502  \u4f1a\u7b49\u5f85\u8fdb\u7a0b\u5916\u90e8\uff08\u7f51\u7edc\/\u78c1\u76d8\/DB\/Timer\uff09\uff1f               \u2502\r\n\u2502  \u2192 \u662f  \u2192 \u2705 async                                   \u2502\r\n\u2502                                                     \u2502\r\n\u2502  \u53ea\u505a\u5185\u5b58\u8ba1\u7b97\uff0c\u8017\u65f6 < 1ms\uff1f                          \u2502\r\n\u2502  \u2192 \u662f  \u2192 \u274c \u4e0d\u8981 async                              \u2502\r\n\u2502                                                     \u2502\r\n\u2502  CPU \u5bc6\u96c6\uff0c\u8017\u65f6 > \u51e0\u5341 ms\uff1f                          \u2502\r\n\u2502  \u2192 \u662f  \u2192 Task.Run() \u5305\u88f9\uff0c\u8fd4\u56de Task\uff08\u53ef\u88ab await\uff09    \u2502\r\n\u2502                                                     \u2502\r\n\u2502  \u8c03\u7528\u4e86 async \u51fd\u6570\uff1f                                 \u2502\r\n\u2502  \u2192 \u662f  \u2192 \u2705 \u5fc5\u987b async\uff08\u4f20\u67d3\u6027\uff09                     \u2502\r\n\u2502                                                     \u2502\r\n\u2502  \u540c\u4e00\u4e2a\u64cd\u4f5c\u6709\u65f6\u5feb\uff08\u547d\u4e2d\u7f13\u5b58\uff09\u6709\u65f6\u6162\uff08\u7a7f\u900f I\/O\uff09\uff1f      \u2502\r\n\u2502  \u2192 \u662f  \u2192 ValueTask \/ \u6761\u4ef6\u6027 async                   \u2502\r\n\u2502                                                     \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/pre>\n
     <\/p>\n<\/div>\n<\/div>\n
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