{"id":7375,"date":"2022-08-30T11:29:37","date_gmt":"2022-08-30T03:29:37","guid":{"rendered":"https:\/\/egonlin.com\/?p=7375"},"modified":"2024-05-05T22:48:36","modified_gmt":"2024-05-05T14:48:36","slug":"02-cpu-cgroup%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=7375","title":{"rendered":"02 cpu cgroup\u4f7f\u7528"},"content":{"rendered":"<h1>\u4e00 CPU CGROUP\u4ecb\u7ecd<\/h1>\n<p>cpu cgroup\u662f\u4ec0\u4e48\uff1f\u4e3a\u4f55\u8981\u7528\uff1f<\/p>\n<p>\u4e4b\u524d\u6211\u4eec\u63d0\u8fc7Cgroup\u662f\u7528\u4e8e\u9650\u5236\u8fdb\u7a0b\u5bf9\u8d44\u6e90\u4f7f\u7528\u7684\u4e00\u79cd\u673a\u5236\uff0c\u800cCpu Cgroup\u662fCgroup\u673a\u5236\u7684\u4e00\u79cd\uff0c\u5373cpu cgroup\u662fcgroups\u7684\u4e00\u4e2a\u5b50\u7cfb\u7edf\uff0c\u5177\u4f53\u7528\u6765\u9650\u5236\u8fdb\u7a0b\u5bf9cpu\u8d44\u6e90\u7684\u4f7f\u7528\u7684<\/p>\n<p>k8s\u91ccpod\u7684request\u4e0elimit\u5e95\u5c42\u5176\u5b9e\u5c31\u662f\u5728\u914d\u7f6ecpu cgroup<\/p>\n<h1>\u4e8c \u50a8\u5907\u77e5\u8bc6cpu usage<\/h1>\n<p>\u65e2\u7136cpu cgroup\u662f\u9650\u5236\u8fdb\u7a0b\u5bf9cpu\u7684\u4f7f\u7528\uff0c\u90a3\u4e48\u5728\u7814\u7a76\u5177\u4f53\u5982\u4f55\u914d\u7f6e\u76f8\u5173\u9650\u5236\u4e4b\u524d\uff0c\u6211\u4eec\u5fc5\u987b\u641e\u6e05\u695a\u8fdb\u7a0b\u5bf9cpu\u7684\u4f7f\u7528\u90fd\u6709\u54ea\u4e9b<\/p>\n<p>\u56e0\u4e3acpu usage\u6709\u4e00\u4e9b\u5bf9cpu\u7684\u4f7f\u7528\u65f6\u4e0d\u4f1a\u8ba1\u5165\u8fdb\u7a0b\u5bf9cpu\u5360\u7528\u7684\uff0c<\/p>\n<p>\u5982\u4e0b\uff1aCPU Usage<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2022\/08\/9-1.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2022\/08\/9-1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<pre><code class=\"language-bash\"># \u8bf7\u4ed4\u7ec6\u9605\u8bfb\uff1ahttps:\/\/egonlin.com\/?p=210\r\n\u7b2c2.2\u5c0f\u8282\r\n\r\n# \u53ef\u4ee5\u901a\u8fc7top\u547d\u4ee4\u67e5\u770b\u5230\u5982\u4e0b\u5173\u4e8ecpu usage\r\nus User\uff0c\u7528\u6237\u6001\u8fdb\u7a0b\u5360\u7528cpu\u65f6\u95f4\u7684\u767e\u5206\u6bd4\uff0c\u4e0d\u5305\u62ec\u4f4e\u4f18\u5148\u7ea7\u8fdb\u7a0b\u7684\u7528\u6237\u6001\u65f6\u95f4\uff08nice\u503c1-19\uff09\r\nsys System\uff0c\u5185\u6838\u6001\u8fdb\u7a0b\u5360\u7528cpu\u65f6\u95f4\u7684\u767e\u5206\u6bd4\r\nni Nice\uff0cnice\u503c1-19\u7684\u8fdb\u7a0b\u7528\u6237\u6001\u5360cpu\u65f6\u95f4\u7684\u767e\u5206\u6bd4\uff0c\u6ce8\u610fni\u4e0eus\u4e00\u6837\uff0c\u90fd\u662f\u5728\u7528\u6237\u6001\r\nid Idle\uff0c\u7cfb\u7edf\u7a7a\u95f2cpu\u7684\u767e\u5206\u6bd4\r\nwa Iowait\uff0c\u7cfb\u7edf\u7b49\u5f85I\/O\u7684cpu\u65f6\u95f4\u5360\u6bd4\uff0c\u8be5\u65f6\u95f4\u4e0d\u8ba1\u5165\u8fdb\u7a0b\u7684CPU\u65f6\u95f4\r\nhi Hardware irq\uff0c\u5904\u7406\u786c\u4ef6\u4e2d\u65ad\u6240\u5360\u7528CPU\u7684\u65f6\u95f4\uff0c\u8be5\u65f6\u95f4\u540c\u6837\u4e0d\u8ba1\u5165\u8fdb\u7a0b\u7684CPU\u65f6\u95f4\r\nsi Softtirq\uff0c\u5904\u7406\u8f6f\u4ef6\u4e2d\u65ad\u7684\u65f6\u95f4\uff0c\u8be5\u65f6\u95f4\u4e0d\u8ba1\u5165\u8fdb\u7a0b\u7684CPU\u65f6\u95f4\r\nst Steal\uff0c\u8868\u793a\u540c\u4e00\u5bbf\u4e3b\u673a\u4e0a\u7684\u5176\u4ed6\u865a\u62df\u673a\u62a2\u8d70\u7684CPU\u65f6\u95f4\r\n\r\n---------------------------------------------------\r\n\u5f3a\u8c03\uff1a\r\n1\u3001\u65e0\u8bba\u662fhi\u8fd8\u662fsi\uff0c\u5360\u7528\u7684cpu\u65f6\u95f4\uff0c\u90fd\u4e0d\u4f1a\u8ba1\u5165\u8fdb\u7a0b\u7684cpu\u65f6\u95f4\uff0c\r\n\u56e0\u4e3a\u672c\u6765\u4e2d\u65ad\u7a0b\u5e8f\u5c31\u662f\u5355\u72ec\u7684\u7a0b\u5e8f\uff0c\u5b83\u4eec\u5728\u5904\u7406\u65f6\u672c\u5c31\u4e0d\u5c5e\u4e8e\u4efb\u4f55\u4e00\u4e2a\u8fdb\u7a0b\uff0c\u5373\u4e0d\u5c5e\u4e8e\u7528\u6237\u6001\u4e5f\u4e0d\u5c5e\u4e8e\u5185\u6838\u6001\uff0c\u56e0\u6b64cgroup\u4e0d\u4f1a\u9650\u5236\u5b83\u4eec\r\n2\u3001\u4e0d\u53ef\u4e2d\u65ad\u7761\u7720D\u4ee3\u8868\u7684\u662f\uff0c\u8fdb\u7a0b\u6b63\u5728\u8fdb\u884c\u7684io\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u8fdb\u7a0b\u6b63\u5728\u8fdb\u884c\u7684IO\u64cd\u4f5c\u6bd4\u55bb\u4e3a\u8fdb\u7a0b\u6b63\u5728\u53d6\u5feb\u9012\uff0c\u4f60\u662f\u8fdb\u7a0b\uff0c\u5feb\u9012\u5458\u662f\u78c1\u76d8\uff0c\u4f60\u95ee\u5feb\u9012\u5458\u628a\u5feb\u9012\u7ed9\u6211\u5427\uff0c\u5feb\u9012\u5458\u8bf4\u6211\u6709\u70b9\u5fd9\uff0c\u4f60\u7b49\u6211\u53bb\u8f66\u4e0a\u53d6\u8fc7\u6765\u7ed9\u4f60\uff0c\u4f60\u522b\u8dd1\u554a\uff0c\u4f60\u5343\u4e07\u522b\u8dd1\u554a\uff0c\u6211\u8fd9\u5c31\u7ed9\u4f60\u53bb\u53d6\uff0c\u6211\u771f\u7684\u662f\u5f88\u5fd9\uff0c\u4f60\u8981\u8bf4\u8dd1\u4e86\uff0c\u6211\u53d6\u8fc7\u6765\u4f60\u6ca1\u6709\u6536\u5230\uff0c\u90a3\u4e48\u6211\u53ef\u5c31\u4e0d\u7ba1\u4f60\u4e86\u554a\uff0c\u4e8e\u662f\u4f60\u5c31\u8fdb\u5165\u4e86\u4e00\u4e2a\u7b49\u5f85\u7684\u72b6\u6001\uff0c\u6b64\u65f6\u65e0\u8bba\u4ec0\u4e48\u4e8b\u90fd\u4e0d\u80fd\u5f71\u54cd\u4f60\uff0c\u66f4\u4e0d\u53ef\u80fd\u76f4\u63a5\u88abkill\u5e72\u6389\uff0c\u56e0\u4e3a\u4e00\u65e6\u53d1\u751f\u8fd9\u4ef6\u4e8b\uff0c\u5feb\u9012\u5458\u53d6\u6765\u4e1c\u897f\u4f60\u53ef\u5c31\u6536\u4e0d\u5230\u4e86\uff0c\u8fd9\u79cd\u7b49\u5f85\u5c31\u662f\u4e0d\u53ef\u4e2d\u65ad\u7761\u7720\r\n\r\n3\u3001\u53ef\u7ec8\u7aef\u5e97\u989d\u7761\u7720S\u4ee3\u8868\u7684\u662f\uff0c\u8fdb\u7a0b\u5c31\u662f\u5728\u539f\u5730\u7b49\u5f85\uff0c\u8fd8\u662f\u8fdb\u7a0b\"\u53d6\u5feb\u9012\"\u7684\u4f8b\u5b50\uff0c\u4f60\u662f\u8fdb\u7a0b\uff0c\u5feb\u9012\u5458\u6b64\u65f6\u53d8\u6210\u4e86\u7f51\u5361\u6216\u8005\u662f\u7ec8\u7aef\u7684\u8f93\u5165\u64cd\u4f5c\uff0c\u4f60\u7684\u7a0b\u5e8f\u8fd0\u884c\u5230\u4e00\u884c\u4ee3\u7801\uff0c\u7b49\u5f85\u7528\u6237\u8f93\u5165\u624d\u80fd\u7ee7\u7eed\u8fd0\u884c\uff0c\u81f3\u4e8e\u7528\u6237\u4ec0\u4e48\u65f6\u5019\u8f93\u5165\uff0c\u4e0d\u77e5\u9053\uff0c\u90a3\u8fdb\u7a0b\u5c31\u8fdb\u5165\u4e86S\u72b6\u6001\uff0c\u4f60\u662f\u53ef\u4ee5\u88abkill\u6389\u7684\u3002\u5c31\u597d\u6bd4\u662f\u4f60\u7f51\u8d2d\u5b8c\u4e1c\u897f\u540e\u4f60\u77e5\u9053\u4f1a\u6709\u5feb\u9012\u4f1a\u9001\u7ed9\u4f60\uff0c\u4f46\u662f\u4ec0\u4e48\u65f6\u5019\u9001\u4f60\u6839\u672c\u4e0d\u77e5\u9053\uff0c\u90a3\u4f60\u80af\u5b9a\u4e0d\u5fc5\u5728\u539f\u5730\u50bb\u7b49\u7740\r\n---------------------------------------------------\r\n\r\n\u4e86\u89e3\uff1a\r\n\u786c\u4e2d\u65adhi\u4e0e\u8f6f\u4e2d\u65adsi\uff08\u4e2d\u65ad\u662f\u4e00\u79cd\u8bbe\u5907\u6570\u636e\u5904\u7406\u673a\u5236\uff0clinux\u901a\u8fc7\u4e2d\u65ad\u6253\u65ad\u4e00\u4e2a\u8fdb\u7a0b\u7684\u8fd0\u884c\u8ba9\u5176\u5904\u7406\u8bbe\u5907\u6570\u636e\uff0c\u5c31\u597d\u6bd4\u4f60\u6b63\u5728\u5403\u996d\uff0c\u9001\u5feb\u9012\u7684\u6253\u4e86\u4e00\u4e2a\u7535\u8bdd\u8fc7\u6765\u8ba9\u4f60\u53d6\u5feb\u9012\u53bb\uff0c\u8fd9\u4e2a\u7535\u8bdd\u5c31\u662f\u4e00\u4e2a\u4e2d\u65ad\u4fe1\u53f7\uff0c\u5feb\u9012\u5458\u5c31\u597d\u6bd4\u662f\u7f51\u5361\u8fd9\u79cd\u8c01\u786c\u4ef6\u8bbe\u5907\r\n\u53ea\u6709\u786c\u4e2d\u65ad\u53ef\u80fd\u4f1a\u56e0\u4e3a\u9700\u8981\u5904\u7406\u6570\u636e\u7684\u65f6\u95f4\u8fc7\u7a0b\u800c\u660e\u663e\u803d\u8bef\u5f53\u524d\u8fdb\u7a0b\u7684\u6267\u884c\u6240\u4ee5\u6709\u4e86\u8f6f\u4e2d\u65ad\r\n\u8f6f\u4e2d\u65ad\u662f\u914d\u5408\u786c\u4e2d\u65ad\u8fd0\u884c\u7684\uff0c\r\n\u4f60\u6b63\u5728\u5403\u996d\uff0c\u786c\u4e2d\u65ad\u5c31\u597d\u6bd4\u662f\u6709\u4eba\u62ff\u5927\u94c1\u68d2\u671d\u7740\u4f60\u8111\u95e8\u5c31\u662f\u4e00\u68d2\u5b50\uff0c\u4f60\u5fc5\u987b\u8981\u6123\u4e00\u4e0b\uff0c\u7136\u540e\u4f60\u5148\u4e0d\u7740\u6025\u62a5\u4ec7\uff0c\u5148\u5728\u672c\u5b50\u4e0a\u8bb0\u4e0b\u6765\u67d0\u5e74\u67d0\u6708\u67d0\u65e5\u6709\u4eba\u62ff\u68d2\u5b50\u6253\u4e86\u6211\u4ee5\u540e\u662f\u8981\u62a5\u4ec7\u7684\uff0c\u7136\u540e\u4f60\u53ef\u4ee5\u7ee7\u7eed\u5403\u996d\uff0c\u8fc7\u4e86\u4e00\u4f1a\u4f60\u7238\u7238\u4e5f\u5c31\u662f\u64cd\u4f5c\u7cfb\u7edf\u770b\u4e86\u4e00\u773c\u4f60\u7684\u8bb0\u4ec7\u672c\uff0c\u7136\u540e\u5bf9\u4f60\u543c\u4e86\u4e00\u55d3\u5b50\u8bf4\u5403\u5403\u5403\uff0c\u5403\u5c41\u554a\u5403\uff0c\u522b\u4ed6\u5988\u7684\u5403\u4e86\u8d76\u7d27\u62a5\u4ec7\u53bb\uff0c\u8fd9\u4e2a\u5c31\u662f\u8f6f\u4e2d\u65ad\uff0c\u4e8e\u662f\u4f60\u505c\u6b62\u5403\u996d\uff0c\u5f00\u59cb\u590d\u4ec7\uff09\r\ncpu\u7528\u6237\u6001\u8fdb\u7a0b\u4f7f\u7528\u6bd4\u4f8b\u5305\u62ecus\u4e0eni\r\ncpu\u5185\u6838\u6001\u8fdb\u7a0b\u4f7f\u7528\u6bd4\u4f8b\u53ea\u6709sys\uff0c\u4e0d\u5305\u62echi\uff0csi\uff0cwait\u8fd9\u4e9b\u90fd\u4e0d\u8ba1\u5165\u8fdb\u7a0b\u4fe1\u606f<\/code><\/pre>\n<p>\u603b\u7ed3\uff1a\u8fdb\u7a0b\u5bf9cpu\u7684\u4f7f\u7528\u5305\u62ec\u4e24\u90e8\u5206<\/p>\n<ul>\n<li>linux cpu \u7684\u4f7f\u7528\u603b\u5171\u5206\u4e3a\u4e24\u7c7b\uff1a\u4e00\u7c7b\u662f\u7528\u6237\u6001\uff0c\u5305\u542bus\u4e0eni\uff0c\u53e6\u5916\u4e00\u7c7b\u662f\u5185\u6838\u6001\u4e5f\u5c31\u662fsy<\/li>\n<li>\u81f3\u4e8ewa\u3001hi\u3001si\uff0c\u8fd9\u4e9bI\/O\u6216\u8005\u4e2d\u65ad\u76f8\u5173\u7684cpu\u4f7f\u7528\uff0ccpu cgroup\u4e0d\u4f1a\u53bb\u505a\u9650\u5236<\/li>\n<\/ul>\n<h1>\u4e09 CPU Cgroup\u7684\u4f7f\u7528<\/h1>\n<p>\u6bcf\u4e2aCgroups\u7684\u5b50\u7cfb\u7edf\u90fd\u662f\u901a\u8fc7\u4e00\u4e2a\u865a\u62df\u6587\u4ef6\u7cfb\u7edf\u6302\u8f7d\u70b9\u7684\u65b9\u5f0f\uff0c\u6302\u5230\u4e00\u4e2a\u7f3a\u7701\u7684\u76ee\u5f55\u4e0b\u3002\u5728linux\u53d1\u884c\u7248\u91cc\uff0ccpu cgroup\u4e00\u822c\u662f\u6302\u8f7d\u5230\/sys\/fs\/cgroup\/cpu\u76ee\u5f55\u4e0b<\/p>\n<p>\u5728\u8be5\u76ee\u5f55\u4e0b\uff0c\u6bcf\u4e2a\u63a7\u5236\u7ec4\uff08Control Group)\u90fd\u662f\u4e00\u4e2a\u5b50\u76ee\u5f55\uff0c\u5404\u4e2a\u63a7\u5236\u7ec4\u4e4b\u95f4\u7684\u5173\u7cfb\u662f\u4e00\u4e2a\u6811\u72b6\u7684\u5c42\u7ea7\u5173\u7cfb\uff08hiearchy\uff09<\/p>\n<p>\u4f8b\u5982\uff0c\u6211\u4eec\u5728\u5b50\u7cfb\u7edf\u7684\u6700\u9876\u5c42\u76ee\u5f55\u5f00\u59cb\u521b\u5efa\u4e24\u4e2a\u63a7\u5236\u7ec4\uff0c\u5176\u5b9e\u5c31\u662f\u521b\u5efa\u4e24\u4e2a\u76ee\u5f55group1\u4e0egroup2\uff0c\u7136\u540e\u518d\u5728group2\u4e0b\u9762\u521b\u5efa\u4e24\u4e2a\u63a7\u5236\u7ec4group3\u4e0egroup4\uff0c\u5982\u6b64\uff0c\u6211\u4eec\u4fbf\u5efa\u7acb\u4e86\u4e00\u4e2a\u6811\u72b6\u7684\u63a7\u5236\u7ec4\u5c42\u7ea7\uff0c\u5982\u4e0b\u56fe\u6240\u793a<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2022\/08\/10-1.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2022\/08\/10-1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u521b\u5efa\u63a7\u5236\u7ec4\u540e\uff0c\u4f1a\u5728\u76ee\u5f55\u4e0b\u81ea\u52a8\u751f\u6210\u4e00\u7cfb\u5217\u6587\u4ef6<\/p>\n<pre><code class=\"language-bash\">[root@test04 cgroup]# df -h |grep sys\r\ntmpfs           981M     0  981M    0% \/sys\/fs\/cgroup\r\n[root@test04 cgroup]# cd \/sys\/fs\/cgroup\/\r\n[root@test04 cgroup]# \r\n[root@test04 cgroup]# \r\n[root@test04 cgroup]# cd cpu\r\n[root@test04 cpu]# \r\n[root@test04 cpu]# mkdir group1\r\n[root@test04 cpu]# mkdir group2\r\n[root@test04 cpu]# cd group2\r\n[root@test04 group2]# mkdir group3 group4\r\n[root@test04 group2]# \r\n[root@test04 group2]# \r\n[root@test04 group2]# \r\n[root@test04 group2]# ls cpu.*\r\ncpu.cfs_period_us  cpu.cfs_quota_us  cpu.rt_period_us  cpu.rt_runtime_us  cpu.shares  cpu.stat<\/code><\/pre>\n<p>\u5220\u9664\u63a7\u5236\u7ec4<\/p>\n<pre><code class=\"language-bash\">rm -rf \u63a7\u5236\u7ec4\u76ee\u5f55\uff0c\u4f1a\u62a5\u9519\u4e0d\u5141\u8bb8\u5220\u9664\r\n\r\n# \u89e3\u51b3\u65b9\u6cd5\r\n\u501f\u52a9libcgroup\u5de5\u5177\u5220\u9664\u76ee\u5f55\r\n\r\n# \u5b89\u88c5LIBCGROUP\u5de5\u5177:\u4f7f\u7528 libcgroup \u5de5\u5177\u524d\uff0c\u8bf7\u5148\u5b89\u88c5 libcgroup \u548c libcgroup-tools \u6570\u636e\u5305\r\n# REDHAT\u7cfb\u7edf\u5b89\u88c5\r\nyum install libcgroup libcgroup-tools -y\r\n\r\n# UBUNTU\u7cfb\u7edf\u5b89\u88c5:\r\napt-get install cgroup-bin\r\n\r\n# \u9a8c\u8bc1\u662f\u5426\u5b89\u88c5\u6210\u529f\r\ncgdelete -h\r\n\r\ncgdelete cpu:\/group1\r\ncgdelete cpu:\/group2\r\n\r\n\u6709\u5b50group\u9700\u8981-r\u5220\u9664\r\ncgdelete -r cpu:\/group1<\/code><\/pre>\n<p>\u5728\u4e91\u5e73\u53f0\u91cc\uff0c\u5927\u90e8\u5206\u7a0b\u5e8f\u90fd\u4e0d\u662f\u5b9e\u65f6\u8c03\u5ea6\u7684\u8fdb\u7a0b\uff0c\u800c\u662f\u666e\u901a\u8c03\u5ea6\uff08SCHED_HORMAL\uff09\u7c7b\u578b\u8fdb\u7a0b\uff0c\u5bf9\u4e8e\u666e\u901a\u8c03\u5ea6\u7528\u5230\u7684\u7b97\u6cd5\uff0c\u5728linux\u7cfb\u7edf\u4e2d\u76ee\u524d\u662fCFS\uff08Completely Fair Scheduler\uff0c\u5373\u5b8c\u5168\u516c\u5e73\u8c03\u5ea6\u5668\uff09\u3002\u5728CPU Cgroup\u4e2d\u548cCFS\u76f8\u5173\u7684\u53c2\u6570\uff0c\u5171\u6709\u4e09\u4e2a<\/p>\n<ul>\n<li>cpu.cfs_period_us\uff1a\u5b83\u662fCFS\u7b97\u6cd5\u7684\u4e00\u4e2a\u8c03\u5ea6\u5468\u671f\uff0c\u4ee5microseconds(\u5fae\u5999)\u4e3a\u5355\u4f4d\uff0c1\u5fae\u5999\u7b49\u4e8e\u5343\u5206\u4e4b\u4e00\u6beb\u79d2\uff0c1\u6beb\u79d2\u7b49\u4e8e\u5343\u5206\u4e4b\u4e00\u79d2\uff0c\u4f8b\u5982\u503c\u4e3a100 000microseconds\uff0c\u5219\u4ee3\u8868100ms<\/li>\n<li>cpu.cfs_quota_us\uff1a\u5b83\u8868\u793aCFS\u7b97\u6cd5\u4e2d\uff0c\u5728\u4e00\u4e2a\u8c03\u5ea6\u5468\u671f\u91cc\uff0c\u6b64\u63a7\u5236\u7ec4\u88ab\u5141\u8bb8\u7684\u8fd0\u884c\u65f6\u95f4\uff0c\u6bd4\u5982\u8be5\u503c\u4e3a50000\u65f6\uff0c\u5c31\u662f50ms\n<p>\u200b cpu.cfs_quota_us \/ cpu.cfs_period_us\u5c31\u662f\u6b64\u63a7\u5236\u7ec4\u88ab\u5141\u8bb8\u4f7f\u7528cpu\u7684\u6700\u5927\u914d\u989d\uff0c\u4f8b\u598250ms \/ 100ms = 0.5 \uff0c<\/p>\n<p>\u200b \u4ee3\u8868\u8be5\u63a7\u5236\u7ec4\u88ab\u5141\u8bb8\u4f7f\u7528\u7684cpu\u6700\u5927\u914d\u7f6e\u4e3a0.5\u4e2acpu<\/li>\n<li>cpu.shares\uff1a\u8be5\u503c\u7528\u4e8e\u63a7\u5236\u5728\u4e00\u4e2a\u63a7\u5236\u7ec4\u76ee\u5f55\u6811\u4e0b\uff0c\u540c\u4e00\u7ea7\u63a7\u5236\u7ec4\u5173\u4e8ecpu\u7684\u5206\u914d\u6bd4\u4f8b\uff0c\u4f8b\u5982\u4e0a\u4f8b\u4e2d\u7684group3\u4e0egroup4\uff0c\u5982\u679cgroup3\u4e0b\u8be5\u503c\u4e3a1024\uff0cgroup4\u4e0b\u8be5\u503c\u4e3a4096\uff0c\u5219group3:group4\u6bd4\u503c\u4e3a1:4\uff0c\u4ee3\u8868\u5728\u4e00\u4e2a5\u9897cpu\u7684\u673a\u5668\u4e0a\uff0c\u5f53group3\u4e0egroup4\u90fd\u9700\u89815\u4e2acpu\u65f6\uff0c\u5b83\u4eec\u5b9e\u9645\u5206\u914d\u7684cpu\u662f\uff1agroup3\u662f1\u4e2a\uff0cgroup4\u65f6\u50194\u4e2a<\/li>\n<\/ul>\n<pre><code class=\"language-bash\">[root@test04 cpu]# cat \/sys\/fs\/cgroup\/cpu\/cpu.cfs_quota_us \r\n-1\r\n[root@test04 cpu]# cat \/sys\/fs\/cgroup\/cpu\/cpu.cfs_period_us \r\n100000  \r\n[root@test04 cpu]# cat \/sys\/fs\/cgroup\/cpu\/cpu.shares \r\n1024\r\n[root@test04 cpu]# <\/code><\/pre>\n<p>k8s\u4f1a\u4e3a\u6bcf\u4e2a\u5bb9\u5668\u521b\u5efa\u4e00\u4e2a\u63a7\u5236\u7ec4\uff0c\u7136\u540e\u628a\u5bb9\u5668\u8fdb\u7a0bpid\u5199\u5165\u63a7\u5236\u7ec4<br \/>\nyaml\u91cc\u7684limit\u63a7\u5236\u7684\u5c31\u662fcpu.cfs_quota_us\/cpu.cfs_period_us\u7684\u6bd4\u503c\uff0c\u5f97\u5230\u662f\u8d44\u6e90\u4f7f\u7528\u4e0a\u9650<br \/>\n\u6211\u4eec\u4e3aKubernetes\u8bbe\u7f6eCPU requests\u5b9e\u9645\u4e0a\u662f\u8bbe\u7f6e\u4e86cpu.shares cgroup\u5c5e\u6027\u3002\u5c31\u50cf\u5185\u5b58requests\u5bf9\u8c03\u5ea6\u5668\u7684\u610f\u4e49\u4e00\u6837\uff0cCPU requests\u4f1a\u8ba9\u8c03\u5ea6\u5668\u9009\u62e9\u81f3\u5c11\u62e5\u6709\u90a3\u4e48\u591a\u53ef\u7528CPU\u5206\u7247\u7684\u8282\u70b9\u3002\u4e0d\u540c\u4e8e\u5185\u5b58requests\uff0c\u8bbe\u7f6eCPU requests\u4e5f\u4f1a\u7ed9cgroup\u8bbe\u7f6e\u76f8\u5e94\u7684\u5c5e\u6027\uff0c\u5e2e\u52a9\u5185\u6838\u5b9e\u9645\u7ed9\u8fdb\u7a0b\u5206\u914d\u4e00\u6837\u6570\u91cf\u7684CPU\u6838\u5fc3\u5206\u7247\u3002Limits\u7684\u5904\u7406\u4e5f\u4e0e\u5185\u5b58\u4e0d\u4e00\u6837\u3002\u8d85\u51fa\u5185\u5b58limits\u4f1a\u8ba9\u4f60\u7684\u5bb9\u5668\u8fdb\u7a0b\u6210\u4e3aoom-kill\u7684\u9009\u9879\uff0c\u4f46\u662f\u4f60\u7684\u8fdb\u7a0b\u57fa\u672c\u4e0a\u4e0d\u53ef\u80fd\u8d85\u51fa\u8bbe\u7f6e\u7684cpu\u914d\u989d\uff0c\u5e76\u4e14\u6c38\u8fdc\u4e0d\u4f1a\u56e0\u4e3a\u8bd5\u7740\u4f7f\u7528\u66f4\u591aCPU\u800c\u88ab\u9a71\u9010\u3002\u7cfb\u7edf\u5728\u8c03\u5ea6\u5668\u90a3\u91cc\u52a0\u5f3a\u4e86\u914d\u989d\u7684\u4f7f\u7528\uff0c\u6240\u4ee5\u8fdb\u7a0b\u5728\u5230\u8fbelimits\u540e\u53ea\u4f1a\u88ab\u9650\u6d41\u3002<\/p>\n<p>\u5148\u6765\u5f00\u53d1\u4e00\u4e2a\u80fd\u591f\u5360\u7528cpu\u7684\u7a0b\u5e8f\uff0c\u8f93\u5165cpu\u4e2a\u6570\uff0c\u8fd0\u884c\u7a0b\u5e8f\u4fbf\u5360\u7528n\u4e2acpu\uff0c\u6b64\u5904\u6211\u4eec\u7528python\u7f16\u5199\uff0c\u4e3a\u4e86\u89c4\u907fGIL\u5bf9\u6211\u4eec\u7684\u5f71\u54cd\uff0c\u6211\u4eec\u91c7\u7528ctypes\u8c03\u7528c\u8bed\u8a00\u5e93\u7684\u65b9\u5f0f\uff0c\u8be6\u89c1\uff1a<a href=\"https:\/\/egonlin.com\/?p=7204\">https:\/\/egonlin.com\/?p=7204<\/a><\/p>\n<p>\uff081\uff09\u7f16\u5199\u4e00\u4e2alibdead_loop.c<\/p>\n<pre><code class=\"language-bash\">void DeadLoop() {\r\n     while (1) {\r\n         ; \r\n     }\r\n} <\/code><\/pre>\n<p>\uff082\uff09\u7f16\u8bd1\u4e3a.so\u5e93\uff0c\u628aso\u6587\u4ef6\u653e\u5230\/opt\u76ee\u5f55\u4e0b\u5427\uff0c\u8fd9\u6837\u65b9\u9762\u540e\u9762\u67e5\u627e<\/p>\n<pre><code class=\"language-bash\">gcc libdead_loop.c -fPIC -shared -o \/opt\/libdead_loop.so\r\n\r\n* -shared \u4e3a\u94fe\u63a5\u5e93  \u8ba9\u7f16\u8bd1\u5668\u77e5\u9053\u662f\u8981\u7f16\u8bd1\u4e00\u4e2a\u5171\u4eab\u5e93\r\n* -fPIC\uff08Position Independent Code\uff09   \u7f16\u8bd1\u751f\u6210\u4ee3\u7801\u4e0e\u4f4d\u7f6e\u65e0\u5173\r\n* \u5982\u679c\u60f3\u80fd\u591f\u8c03\u8bd5\u53ef\u52a0\u4e0a-g -Wall\u7b49\u53c2\u6570<\/code><\/pre>\n<p>\uff083\uff09\u7f16\u5199py\u811a\u672ctest.py<\/p>\n<pre><code class=\"language-bash\">#coding:utf-8\r\nfrom ctypes import cdll\r\nfrom threading import Thread\r\nimport sys\r\n\r\nif __name__ == \"__main__\":\r\n    if not (len(sys.argv) == 2 and sys.argv[1].isdigit()):\r\n        print(\"Usage: python xxx.py cpu\u4e2a\u6570\")\r\n        exit()\r\n\r\n    num = int(sys.argv[1])\r\n    lib = cdll.LoadLibrary(\"\/opt\/libdead_loop.so\")\r\n    for i in range(num):\r\n        Thread(target=lib.DeadLoop).start()<\/code><\/pre>\n<p>\u8865\u5145\uff1a\u5982\u679c\u4e0d\u4f1a\u7f16\u5199\u811a\u672c\u4e5f\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u8d1f\u8f7d\u6a21\u62df\u5de5\u5177<\/p>\n<pre><code class=\"language-bash\">yum install stress -y\r\nstress -c 1  -t 60 # \u5bf91\u4e2acpu\uff0c\u6d4b\u8bd560\u79d2<\/code><\/pre>\n<div id=\"rml_readmorelogin_placeholder\" style=\"position:relative;\"><div id=\"rml_fade_content\" style=\"position: absolute;\r\ntop:-10em;\r\nwidth:100%;\r\nheight:10em;\r\nbackground: -webkit-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -moz-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -o-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\r\nbackground-image: -ms-linear-gradient(rgba(255, 255, 255, 0) 0%,#ffffff 100%);\"><\/div><div class=\"wpf-controller aru_rml_from_in_post\" style=\"background-color:#eeeeee;border:5px solid #cce6ff;\" id=\"ARU_ReadMoreLogin_ReadMoreLoginController\"><h2 id=\"Header\">\u67e5\u770b\u66f4\u591a<\/h2><div id=\"Message\"><p>\u8054\u7cfb\u7ba1\u7406\u5458\u5fae\u4fe1tutu19192010\uff0c\u6ce8\u518c\u8d26\u53f7<\/p>\n<\/div><div id=\"StatusBarHeader\"><\/div><form id=\"ARU_ReadMoreLogin_ReadMoreLoginController\"><input name=\"post_id\" value=\"7375\" type=\"hidden\"\/><input name=\"_init_callback\" value=\"InitLogin\" type=\"hidden\"\/><input name=\"post_id\" value=\"7375\" type=\"hidden\"\/><input name=\"rt_ype\" value=\"1\" type=\"hidden\"\/><input name=\"nonce\" value=\"161f36b8bf\" type=\"hidden\"\/><input name=\"_wpnonce\" value=\"b0e6d8f8bf\" type=\"hidden\"\/><input name=\"_controller\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginController\" type=\"hidden\"\/><input name=\"_proxy_controller\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginController\" type=\"hidden\"\/><input name=\"_view\" value=\"ARU_ReadMoreLogin\\ReadMoreLoginView\" type=\"hidden\"\/><table class=\"wpf-table-placeholder\"><tbody class=\"wpf-table-placeholder\"><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\" width=\"400px\"><table class=\"wpf-table-placeholder\"><tbody class=\"wpf-table-placeholder\"><tr class=\"wpf-table-placeholder\"><th class=\"wpf-table-placeholder-input\"><label class=\"wpf-label\">Username:<\/label><\/th><\/tr><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\"><input class=\"regular-text text_input\" name=\"username\" value=\"\" type=\"text\"\/><\/td><\/tr><tr class=\"wpf-table-placeholder\"><th class=\"wpf-table-placeholder-input\"><label class=\"wpf-label\">Password:<\/label><\/th><\/tr><tr class=\"wpf-table-placeholder\"><td class=\"wpf-table-placeholder-input\"><input class=\"regular-text text_input\" name=\"password\" value=\"\" type=\"password\"\/><\/td><\/tr><\/tbody><\/table><p class=\"wpf-table-placeholder submit\"><button class=\"wp_plugin_framework_ajax_button\" type=\"button\" style=\"background-color:#4D90FE;;color:#ffffff;;border:1px solid #3079ed;\" name=\"_event\" value=\"ButtonLogin\">Log in<\/button><\/p><\/td><td class=\"wpf-table-placeholder-input\"><\/td><\/tr><\/tbody><\/table><\/form><div id=\"ButtonStartRegister\"><a href=\"https:\/\/egonlin.com\/wp-login.php?action=register\">Register<\/a><\/div><div id=\"Link1\"><a href=\"https:\/\/egonlin.com\/wp-login.php?action=lostpassword\">Forgotten username or password?<\/a><\/div><div id=\"StatusBarFooter\"><\/div><\/div><\/div><div id=aru_remaining_content><\/div>","protected":false},"excerpt":{"rendered":"<p>\u4e00 CPU CGROUP\u4ecb\u7ecd cpu cgroup\u662f\u4ec0\u4e48\uff1f\u4e3a\u4f55\u8981\u7528\uff1f \u4e4b\u524d\u6211\u4eec\u63d0\u8fc7Cgroup\u662f\u7528\u4e8e\u9650\u5236\u8fdb\u7a0b\u5bf9 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