{"id":33739,"date":"2025-04-28T13:35:32","date_gmt":"2025-04-28T05:35:32","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/33739.html"},"modified":"2025-04-28T13:35:32","modified_gmt":"2025-04-28T05:35:32","slug":"%e3%80%90linux%e3%80%91%e8%bf%9b%e7%a8%8b%e4%bc%98%e5%85%88%e7%ba%a7%e5%92%8c%e8%bf%9b%e7%a8%8b%e5%88%87%e6%8d%a2","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/33739.html","title":{"rendered":"\u3010Linux\u3011\u8fdb\u7a0b\u4f18\u5148\u7ea7\u548c\u8fdb\u7a0b\u5207\u6362"},"content":{"rendered":"<p>&#x1f4dd;\u524d\u8a00&#xff1a; \u8fd9\u7bc7\u6587\u7ae0\u6211\u4eec\u6765\u8bb2\u8bb2\u8fdb\u7a0b\u4f18\u5148\u7ea7\u548c\u8fdb\u7a0b\u5207\u6362&#xff1a;<\/p>\n<p>&#x1f3ac;\u4e2a\u4eba\u7b80\u4ecb&#xff1a;\u52aa\u529b\u5b66\u4e60ing &#x1f4cb;\u4e2a\u4eba\u4e13\u680f&#xff1a;Linux &#x1f380;CSDN\u4e3b\u9875 \u611a\u6da6\u6c42\u5b66 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\u4f46\u662f\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\u4e0d\u5efa\u8bae\u9891\u7e41\u4fee\u6539\u3002<\/p>\n<h3>\u5b9e\u65f6\u64cd\u4f5c\u7cfb\u7edf\u548c\u5206\u65f6\u64cd\u4f5c\u7cfb\u7edf<\/h3>\n<ul>\n<li>\u5b9e\u65f6\u64cd\u4f5c\u7cfb\u7edf&#xff1a;\u5bf9\u5916\u90e8\u4e8b\u4ef6\u505a\u51fa\u5feb\u901f\u54cd\u5e94&#xff0c;\u5e76\u4e14\u4e25\u683c\u8981\u6c42\u5728\u4e00\u5b9a\u65f6\u95f4\u5185\u5b8c\u6210\u3002\u4f18\u5148\u7ea7\u9ad8\u7684\u8fdb\u7a0b\u53ef\u4ee5\u4e2d\u65ad\u4f18\u5148\u7ea7\u4f4e\u7684\u8fdb\u7a0b\u3002<\/li>\n<li>\u5206\u65f6\u64cd\u4f5c\u7cfb\u7edf&#xff1a;\u6709\u65f6\u95f4\u7247&#xff0c;\u8f6e\u6d41\u4e3a\u8fdb\u7a0b\u63d0\u4f9b\u670d\u52a1\u3002&#xff08;\u5373&#xff1a;\u5c3d\u7ba1\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\u9ad8&#xff0c;\u4f46\u662f\u6bcf\u6b21\u53ea\u80fd\u5728CPU\u4e0a\u8fd0\u884c\u4e00\u4e2a\u65f6\u95f4\u7247\u90a3\u4e48\u957f\u7684\u65f6\u95f4&#xff0c;\u8fd0\u884c\u5b8c\u4ee5\u540e\u5c31\u88ab\u62ff\u4e0b\u6765&#xff0c;\u7136\u540e\u8fd0\u884c\u5176\u4ed6\u8fdb\u7a0b&#xff09;<\/li>\n<\/ul>\n<p>\u4e3e\u4e2a\u5f62\u8c61\u7684\u4f8b\u5b50\u7406\u89e3\u4e24\u79cd\u64cd\u4f5c\u7cfb\u7edf\u7684\u8fd0\u7528\u573a\u666f&#xff1a; 1&#xff0c;\u6c7d\u8f66\u8fdb\u884c\u5239\u8f66\u64cd\u4f5c&#xff1a;\u8fd0\u7528\u5b9e\u65f6\u64cd\u4f5c\u7cfb\u7edf&#xff0c;\u5373&#xff1a;\u4e00\u65e6\u6709\u5239\u8f66\u6307\u4ee4&#xff0c;\u5239\u8f66\u6307\u4ee4\u653e\u5728\u7b2c\u4e00\u4f4d&#xff0c;\u628a\u5239\u8f66\u6307\u4ee4\u6267\u884c\u5b8c\u624d\u80fd\u8fd0\u884c\u522b\u7684 2&#xff0c;\u8fb9\u8fd0\u884c\u4ee3\u7801\u8fb9\u542c\u97f3\u4e50&#xff1a;\u8fd0\u7528\u7684\u662f\u5206\u65f6\u64cd\u4f5c\u7cfb\u7edf&#xff0c;\u5373&#xff1a;\u6ca1\u6709\u8981\u6c42\u8dd1\u4ee3\u7801\u7684\u65f6\u5019\u97f3\u4e50\u5c31\u6682\u505c&#xff0c;\u800c\u662f\u4e24\u4e2a\u8fdb\u7a0b\u4ea4\u66ff\u5728CPU\u4e0a\u8fd0\u884c\u3002&#xff08;\u53ea\u662f\u901f\u5ea6\u592a\u5feb&#xff0c;\u8ba9\u6211\u4eec\u611f\u89c9\u4e24\u4e2a\u5728\u4e00\u8d77&#xff09;<\/p>\n<p>\u7406\u8bba\u4e0a&#xff0c;\u5355\u4e2aCPU\u5728\u67d0\u4e00\u65f6\u523b&#xff0c;\u53ea\u80fd\u6709\u4e00\u4e2a\u8fdb\u7a0b\u5728\u8fd0\u884c\u3002 \u4f46\u67d0\u4e00\u65f6\u6bb5&#xff0c;\u53ef\u4ee5\u901a\u8fc7\u5e76\u53d1\u7684\u65b9\u5f0f&#xff0c;\u8ba9\u6211\u4eec\u611f\u89c9\u5728\u8fd0\u884c\u591a\u4e2a\u8fdb\u7a0b\u3002 \u6bd4\u5982\u53ea\u6709\u4e24\u4e2a\u8fdb\u7a0b&#xff1a;\u8fd0\u884c\u4ee3\u7801\u548c\u542c\u97f3\u4e50&#xff0c;\u4e24\u4e2a\u8fdb\u7a0b\u662f\u4ea4\u66ff\u83b7\u53d6CPU\u8d44\u6e90\u7684&#xff0c;\u4e00\u4e2a\u8fdb\u7a0b\u8fd0\u884c\u5b8c\u4e00\u4e2a\u65f6\u95f4\u7247\u4ee5\u540e&#xff0c;\u5c31\u7acb\u9a6c\u6362\u6210\u53e6\u4e00\u4e2a&#xff0c;\u53ea\u662f\u5207\u6362\u7684\u901f\u5ea6\u592a\u5feb\u4e86\u3002<\/p>\n<p>\u8fdb\u7a0b\u7684\u7279\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u7ade\u4e89\u6027&#xff08;\u7ade\u4e89CPU\u8d44\u6e90&#xff09;<\/li>\n<li>\u72ec\u7acb\u6027&#xff08;\u591a\u8fdb\u7a0b\u8fd0\u884c\u95f4\u4e92\u76f8\u4e0d\u5e72\u6270&#xff09;<\/li>\n<li>\u5e76\u884c\u6027&#xff08;\u591a\u4e2a\u8fdb\u7a0b\u5728\u591a\u4e2aCPU\u4e0b\u5206\u522b&#xff0c;\u540c\u65f6\u8fdb\u884c\u8fd0\u884c&#xff09;<\/li>\n<li>\u5e76\u53d1\u6027&#xff08;\u591a\u4e2a\u8fdb\u7a0b\u5728\u2f00\u4e2aCPU\u4e0b\u91c7\u2f64\u8fdb\u7a0b\u5207\u6362\u7684\u2f45\u5f0f&#xff0c;\u5728\u2f00\u6bb5\u65f6\u95f4\u4e4b\u5185&#xff0c;\u8ba9\u591a\u4e2a\u8fdb\u7a0b\u90fd\u5f97\u4ee5\u63a8\u8fdb&#xff09;<\/li>\n<\/ul>\n<h2>\u4e8c&#xff0c;\u8fdb\u7a0b\u5207\u6362<\/h2>\n<p>\u90a3\u4e48&#xff0c;\u4e00\u4e2a\u8fdb\u7a0b\u88ab\u62ff\u4e0b\u6765\u4ee5\u540e&#xff0c;\u4e0b\u6b21\u518d\u4e0aCPU\u65f6&#xff0c;\u4e3a\u4ec0\u4e48\u80fd\u591f\u5ef6\u7eed\u4e0a\u4e00\u6b21\u7684\u4f4d\u7f6e\u7ee7\u7eed\u8fd0\u884c\u5462&#xff1f;\u8fd9\u662f\u56e0\u4e3a&#xff0c;\u6570\u636e\u4f1a\u88ab\u8bb0\u5f55\u3002<\/p>\n<h3>1 \u4fdd\u62a4\u4e0a\u4e0b\u6587<\/h3>\n<p>CPU\u5728\u8fd0\u884c\u8fdb\u7a0b\u65f6&#xff0c;\u4e3b\u8981\u5173\u6ce8\u6570\u636e\u548c\u4ee3\u7801\u3002CPU\u4e2d\u7684\u5404\u79cd\u5bc4\u5b58\u5668\u4f1a\u7528\u6765\u8bb0\u5f55\u5f53\u524d\u8fdb\u7a0b\u7684\u4e34\u65f6\u6570\u636e\u3002&#xff08;CPU\u7684\u5bc4\u5b58\u5668\u662f\u4e00\u5757\u7a7a\u95f4&#xff0c;\u662f\u6570\u636e\u4e34\u65f6\u5b58\u50a8\u7684\u5730\u65b9&#xff09; \u5047\u5982\u73b0\u5728\u6709\u4e00\u4e2a\u8fdb\u7a0bA\u548c\u4e00\u4e2a\u8fdb\u7a0bB&#xff0c;\u4fdd\u62a4\u4e0a\u4e0b\u6587\u7684\u6d41\u7a0b&#xff1a;<\/p>\n<ul>\n<li>\u8fdb\u7a0bA\u5148\u8fd0\u884c&#xff0c;\u6b64\u65f6CPU\u4e2d\u7684\u5bc4\u5b58\u5668\u5c31\u4f1a\u8bb0\u5f55\u8fdb\u7a0bA\u7684\u5404\u79cd\u6570\u636e&#xff0c;\u6bd4\u5982&#xff1a;\u8fd0\u7b97(1 &#043; 2) * 3&#xff0c;\u52a0\u6570 2 \u548c\u88ab\u52a0\u6570 1 \u88ab\u5b58\u50a8\u5230\u5bc4\u5b58\u5668\u4e2d&#xff0c;&#043;\u8fd9\u4e2a\u6307\u4ee4\u4e5f\u88ab\u5b58\u50a8\u5230\u5bc4\u5b58\u5668\u4e2d&#xff0c;1&#043;2\u5f97\u5230\u7684\u7ed3\u679c3\u4e5f\u88ab\u50a8\u5b58\u5230\u5bc4\u5b58\u5668\u4e2d<\/li>\n<li>\u7136\u540e&#xff0c;A\u8fdb\u7a0b\u7684\u65f6\u95f4\u7247\u5230\u4e86&#xff0c;\u8fd9\u65f6\u5019&#xff0c;B\u8fdb\u7a0b\u8981\u4e0a\u6765<\/li>\n<li>\u5219A\u5c31\u4f1a\u5c06CPU\u4e2d\u5bc4\u5b58\u5668\u7684\u6570\u636e\u4fdd\u5b58\u5230task_struct\u4e2d\u4e00\u4e2a\u53ebtss\u7684\u7ed3\u6784\u4f53&#xff08;\u5373\u786c\u4ef6\u4e0a\u4e0b\u6587\u6570\u636e&#xff0c;\u4fdd\u5b58\u5230task_struct\u4e2d\u7684tss&#xff09;&#xff0c;\u6bd4\u5982\u8fd0\u7b97\u7684\u4e34\u65f6\u7ed3\u679c3&#xff0c;\u8fd8\u6709\u540e\u7eed\u7684*\u64cd\u4f5c\u7b49<\/li>\n<li>B\u4e0a\u53bb\u4ee5\u540e&#xff0c;\u5c31\u4f1a\u7528\u81ea\u5df1\u7684\u6570\u636e\u76f4\u63a5\u8986\u76d6\u5bc4\u5b58\u5668\u91cc\u9762\u7684\u6570\u636e&#xff0c;\u7136\u540e\u8fd0\u884cB\u8fdb\u7a0b<\/li>\n<li>\u7b49\u5230B\u7684\u65f6\u95f4\u7247\u8fd0\u884c\u5b8c\u4e86&#xff0c;B\u50cfA\u4e00\u6837\u81ea\u5df1\u8bb0\u5f55\u81ea\u5df1\u7684\u6570\u636e<\/li>\n<li>\u7136\u540e\u5230A\u8fd0\u884c&#xff0c;A\u53c8\u91cd\u65b0\u628a\u4e0a\u4e00\u6b21\u8bb0\u5f55\u7684\u6570\u636e\u653e\u5230\u5bc4\u5b58\u5668\u91cc&#xff0c;\u7136\u540e\u63a5\u7740\u8fd0\u884c<\/li>\n<\/ul>\n<p>Linux\u5185\u68380.11\u7684task_struct\u4e2d\u7684tss_struct&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250428053530-680f13a252c38.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250428053530-680f13a28c295.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>2 Linux2.6\u5185\u6838\u8fdb\u7a0bO(1)\u8c03\u5ea6\u961f\u5217<\/h3>\n<p>\u2f00\u4e2aCPU\u62e5\u6709\u2f00\u4e2arunqueue&#xff08;\u8c03\u5ea6\u961f\u5217&#xff09;&#xff0c;\u90a3\u8c03\u5ea6\u961f\u5217\u7684\u6570\u636e\u7ed3\u6784\u5230\u5e95\u662f\u600e\u4e48\u6837&#xff1f;\u5982\u4f55\u7ba1\u7406\u8fd9\u4e9b\u8fdb\u7a0b\u7684&#xff1f; \u8fdb\u7a0bA\u7684\u65f6\u95f4\u7247\u8fd0\u884c\u5b8c\u4ee5\u540e&#xff0c;\u8fdb\u7a0bA\u53c8\u53bb\u4e86\u54ea\u91cc&#xff0c;\u4e0b\u4e00\u4e2a\u8981\u8fd0\u884c\u7684\u8fdb\u7a0bB\u662f\u600e\u4e48\u627e\u5230\u7684&#xff0c;\u8fdb\u7a0bA\u53c8\u662f\u600e\u4e48\u56de\u6765\u91cd\u65b0\u8fd0\u884c\u7684&#xff1f;<\/p>\n<h4>Linux2.6\u5185\u6838\u4e2d\u8fdb\u7a0b\u961f\u5217\u7684\u6570\u636e\u7ed3\u6784<\/h4>\n<p>\u4e00\u4e2aCPU\u4e00\u4e2arunqueue <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250428053530-680f13a2e543c.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>queue[140]<\/h4>\n<p>queue[140]\u7684\u5e95\u5c42\u662f\u54c8\u5e0c\u8868&#xff08;\u7528\u7684\u662f\u54c8\u7cfb\u7edf&#xff09;<\/p>\n<ul>\n<li>[0, 99]&#xff1a;\u662f\u5b9e\u65f6\u4f18\u5148\u7ea7&#xff08;\u6211\u4eec\u4e0d\u5173\u5fc3&#xff09;<\/li>\n<li>[100, 139]&#xff1a;\u662f\u666e\u901a\u4f18\u5148\u7ea7&#xff0c;\u521a\u597d\u5bf9\u5e94 nice \u503c\u768440\u4e2a\u4f18\u5148\u7ea7\u7ea7\u522b<\/li>\n<li>\u540c\u4e00\u7ea7\u522b\u4e2d\u7684\u4e0d\u540c\u8fdb\u7a0b&#xff0c;\u662f\u901a\u8fc7\u54c8\u5e0c\u6876\u7684\u65b9\u5f0f\u94fe\u8d77\u6765\u7684<\/li>\n<\/ul>\n<p>\u627e\u8fd0\u884c\u961f\u5217\u65f6&#xff1a;\u5168\u5c40\u4e0a\u4ece\u4e0a\u5230\u4e0b\u770b\u4f18\u5148\u7ea7&#xff0c;\u5c40\u90e8\u4e0a&#xff08;\u540c\u4e00\u4f18\u5148\u7ea7&#xff09;&#xff0c;\u8fdb\u7a0b\u961f\u5217FIFO\u3002<\/p>\n<h4>bitmap[5]<\/h4>\n<p>\u54c8\u5e0c\u6876\u7684\u5934\u63d2\u6548\u7387\u662fO(1)&#xff0c;\u56e0\u4e3aqueue[140]\u5927\u5c0f\u56fa\u5b9a&#xff0c;\u67e5\u627e\u6548\u7387\u4e5f\u662fO(1)&#xff0c;\u4f46\u662f\u6bcf\u6b21\u627e\u8fdb\u7a0b\u90fd\u8981\u4ece\u4e0a\u5230\u4e0b\u904d\u5386\u6574\u4e2aqueue[140]\u8fd8\u662f\u592a\u6162\u4e86&#xff0c;\u4e8e\u662f\u6709\u4e86\u4f4d\u56feunsigned int bitmap[5] unsigned int\u662f 4 \u4e2a\u5b57\u8282&#xff0c;\u5373&#xff1a;32\u4e2abit\u4f4d&#xff0c;\u957f\u5ea6\u4e3a 5 \u7684\u8bdd\u5c31\u662f 160 \u4e2a\u6bd4\u7279\u4f4d\u3002\u4e8e\u662f\u4ece 0 \u5f00\u59cb 0 &#8211; 139\u4f4d\u5c31\u4e0equeue[140]\u7684\u4e0b\u6807\u4e00\u4e00\u5bf9\u5e94\u3002\u60f3\u8981\u77e5\u9053\u54ea\u4e2a\u4e0b\u6807\u8fd8\u6709\u8fdb\u7a0b&#xff0c;\u5c31\u53ea\u9700\u8981\u67e5bitmap&#xff0c;0 \u4ee3\u8868\u65e0\u8fdb\u7a0b&#xff0c;1 \u4ee3\u8868\u8fd8\u6709\u8fdb\u7a0b\u3002<\/p>\n<h4>nr_active<\/h4>\n<p>nr_active\u7528\u6765\u6307\u660e\u5f53\u524dqueue[140]\u91cc\u7684\u8fdb\u7a0b\u6570\u91cf<\/p>\n<h4>a \u961f\u5217\u548c e \u961f\u5217<\/h4>\n<p>\u4e00\u4e2a\u8fdb\u7a0b\u7684\u65f6\u95f4\u7247\u8fd0\u884c\u5b8c\u4ee5\u540e\u88ab\u653e\u5230\u54ea\u91cc\u5462&#xff1f; \u8fd9\u5c31\u8981\u8c08\u8c08 e \u961f\u5217&#xff0c;\u5728\u4e0a\u9762\u7684\u7ed3\u6784\u56fe\u4e2d\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u4e24\u4efd&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250428053531-680f13a32c41b.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u8fd9\u4e24\u4efd\u4e00\u4efd\u662f\u6d3b\u8dc3\u961f\u5217&#xff08;a \u961f\u5217&#xff09;&#xff0c;\u4e00\u4efd\u662f\u8fc7\u671f\u961f\u5217&#xff08;e \u961f\u5217&#xff09;&#xff0c;\u5206\u522b\u88ab*active \u548c *expired \u6307\u9488\u6307\u5411<\/p>\n<p>\u8fdb\u7a0b\u7684\u8fd0\u884c\u987a\u5e8f\u4ee5\u53ca\u4ea4\u66ff&#xff1a;<\/p>\n<ul>\n<li>\u9996\u5148&#xff0c;\u6211\u4eec\u5728 a \u961f\u5217\u91cc\u9762\u6311\u8fdb\u7a0b&#xff1a;\u5168\u5c40\u4e0a\u4ece\u4e0a\u5230\u4e0b&#xff08;\u5229\u7528bitmap&#xff09;&#xff0c;\u5c40\u90e8\u4e0a&#xff0c;FIFO&#xff08;\u76f4\u63a5\u62ff\u94fe\u8868\u7b2c\u4e00\u4e2a&#xff09;<\/li>\n<li>\u5f53\u4e00\u4e2a\u8fdb\u7a0b\u7684\u65f6\u95f4\u7247\u8fd0\u884c\u5b8c\u4ee5\u540e&#xff0c;\u8fd9\u4e2a\u8fdb\u7a0b\u4f1a\u4ece a \u961f\u5217\u79fb\u52a8\u5230 e \u961f\u5217<\/li>\n<li>\u76f4\u5230\u6240\u6709 a \u961f\u5217\u91cc\u9762\u7684\u8fdb\u7a0b\u90fd\u88ab\u6267\u884c\u8fc7\u4e86\u4e00\u904d&#xff08;\u5373&#xff1a;nr_active &#061;&#061; 0&#xff09;<\/li>\n<li>\u7136\u540e&#xff0c;\u4f1a\u4ea4\u6362*active \u548c *expired \u6307\u9488&#xff0c;\u518d\u8fd0\u884c a \u961f\u5217&#xff0c;\u91cd\u590d\u4e0a\u9762\u7684\u8fc7\u7a0b<\/li>\n<\/ul>\n<p>&#xff08;\u8fd9\u5c31\u662fO(1)\u8c03\u5ea6\u7b97\u6cd5&#xff1a;\u5728\u7cfb\u7edf\u5f53\u4e2d\u67e5\u627e\u2f00\u4e2a\u6700\u5408\u9002\u8c03\u5ea6\u7684\u8fdb\u7a0b\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u662f\u2f00\u4e2a\u5e38\u6570&#xff0c;\u4e0d\u968f\u7740\u8fdb\u7a0b\u589e\u591a\u2f7d\u5bfc\u81f4\u65f6\u95f4\u6210\u672c\u589e\u52a0&#xff09;<\/p>\n<p>\u5176\u5b9e&#xff0c;\u4e0a\u8ff0\u8fc7\u7a0b\u4e2d\u8fdb\u7a0b\u5728 e \u961f\u5217\u65f6\u7684\u72b6\u6001\u5c31\u662f\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u5c31\u7eea\u72b6\u6001&#xff0c;\u4e0d\u8fc7Linux\u4e2d\u4e0d\u5bf9\u5c31\u7eea\u72b6\u6001\u548cR\u72b6\u6001\u8fdb\u884c\u533a\u5206\u3002<\/p>\n<p>\u8fd8\u6709\u4e24\u4e2a\u5c0f\u7ec6\u8282&#xff1a;<\/p>\n<p>1&#xff0c;\u5f53\u4e00\u4e2a\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\u88ab\u6539\u4e86&#xff0c;\u8fd9\u4e2a\u8fdb\u7a0b\u600e\u4e48\u79fb\u52a8\u4f4d\u7f6e\u5462&#xff1f;<\/p>\n<p>\u7b54&#xff1a;\u5f53\u4e00\u4e2a\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\u88ab\u6539&#xff0c;\u672c\u6b21\u7684PRI\u662f\u4e0d\u53d8\u7684&#xff0c;\u7b49\u5230\u672c\u6b21\u4ece a \u961f\u5217\u4e2d\u8fd0\u884c\u5b8c\u4ee5\u540e\u5230\u4e86 e \u961f\u5217&#xff0c;\u4e0b\u6b21\u4ece e \u961f\u5217\u56de\u5230 a \u7684\u65f6\u5019&#xff0c;\u5728\u91cd\u65b0\u8ba1\u7b97&#xff0c;\u6539\u53d8\u4f4d\u7f6e<\/p>\n<p>2&#xff0c;\u5f53\u6709\u65b0\u8fdb\u7a0b\u52a0\u5165\u65f6&#xff0c;\u65b0\u8fdb\u7a0b\u8fdb a \u8fd8\u662f e<\/p>\n<li>\u4e00\u822c\u60c5\u51b5&#xff1a;\u65b0\u8fdb\u7a0b\u8fdb e<\/li>\n<li>\u5185\u6838\u62a2\u5360\u60c5\u51b5&#xff1a;\u65b0\u8fdb\u7a0b\u8fdb a<\/li>\n<hr \/>\n<p>&#x1f308;\u6211\u7684\u5206\u4eab\u4e5f\u5c31\u5230\u6b64\u7ed3\u675f\u5566&#x1f308; \u8981\u662f\u6211\u7684\u5206\u4eab\u4e5f\u80fd\u5bf9\u4f60\u7684\u5b66\u4e60\u8d77\u5230\u5e2e\u52a9&#xff0c;\u90a3\u7b80\u76f4\u662f\u592a\u9177\u5566&#xff01; \u82e5\u6709\u4e0d\u8db3&#xff0c;\u8fd8\u8bf7\u5927\u5bb6\u591a\u591a\u6307\u6b63&#xff0c;\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\u4ea4\u6d41&#xff01; &#x1f4e2;\u516c\u4e3b&#xff0c;\u738b\u5b50&#xff1a;\u70b9\u8d5e&#x1f44d;\u2192\u6536\u85cf\u2b50\u2192\u5173\u6ce8&#x1f50d; \u611f\u8c22\u5927\u5bb6\u7684\u89c2\u770b\u548c\u652f\u6301&#xff01;\u795d\u5927\u5bb6\u90fd\u80fd\u5f97\u507f\u6240\u613f&#xff0c;\u5929\u5929\u5f00\u5fc3&#xff01;&#xff01;&#xff01;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb1.2k\u6b21\uff0c\u70b9\u8d5e47\u6b21\uff0c\u6536\u85cf57\u6b21\u3002\u3010Linux\u3011\u8fdb\u7a0b\u4f18\u5148\u7ea7\u548c\u8fdb\u7a0b\u5207\u6362\uff1a\u4e00\uff0c\u8fdb\u7a0b\u4f18\u5148\u7ea7\u5b9e\u65f6\u64cd\u4f5c\u7cfb\u7edf\u548c\u5206\u65f6\u64cd\u4f5c\u7cfb\u7edf\u4e8c\uff0c\u8fdb\u7a0b\u5207\u63621 \u4fdd\u62a4\u4e0a\u4e0b\u65872 Linux2.6\u5185\u6838\u8fdb\u7a0bO(1)\u8c03\u5ea6\u961f\u5217Linux2.6\u5185\u6838\u4e2d\u8fdb\u7a0b\u961f\u5217\u7684\u6570\u636e\u7ed3\u6784queue[140]bitmap[5]nr_activea \u961f\u5217\u548c e \u961f\u5217<\/p>\n","protected":false},"author":2,"featured_media":33733,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,58,43,305,44],"topic":[],"class_list":["post-33739","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-c","tag-linux","tag-43","tag-305","tag-44"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u3010Linux\u3011\u8fdb\u7a0b\u4f18\u5148\u7ea7\u548c\u8fdb\u7a0b\u5207\u6362 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/33739.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" 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