{"id":4876,"date":"2020-12-15T15:59:39","date_gmt":"2020-12-15T07:59:39","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=4876"},"modified":"2020-12-15T15:59:39","modified_gmt":"2020-12-15T07:59:39","slug":"%e7%94%a8%e4%b9%9d%e6%9d%a1%e5%91%bd%e4%bb%a4%e5%9c%a8%e4%b8%80%e5%88%86%e9%92%9f%e5%86%85%e6%a3%80%e6%9f%a5linux%e6%9c%8d%e5%8a%a1%e5%99%a8%e6%80%a7%e8%83%bd","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/4876","title":{"rendered":"\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd"},"content":{"rendered":"<header class=\"entry-header up-header\">\n<p class=\"entry-title\"><a href=\"https:\/\/www.techug.com\/post\/1234ewrt.html\">\u539f\u6587\u5730\u5740<\/a><\/p>\n<p class=\"shares social\">\n<div class=\"share-buttons v2 expanded\">\n<div class=\"share-container\">\n<div class=\"primary-shares\">\n<div class=\"shares-wrapper\">\n<div class=\"bdsharebuttonbox\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/header>\n<div id=\"primary\" class=\"content-area\">\n<div id=\"content\" class=\"site-content\" role=\"main\">\n<article id=\"post-45399\" class=\"post-45399 post type-post status-publish format-standard has-post-thumbnail hentry category-it-view tag-linux\">\n<div id=\"content0\" class=\"entry-content  content0\">\n<p>\u5982\u4f55\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\uff1f\u6211\u4eec\u4e00\u8d77\u770b\u4e0b\u6587\u4e2d\u4ecb\u7ecd\u7684\u4e5d\u6761\u547d\u4ee4\u3002<\/p>\n<p><strong>\u4e00\u3001uptime\u547d\u4ee4<\/strong><\/p>\n<p>&nbsp;<\/p>\n<figure class=\"aspectRatioFigure\">\n<div class=\"aspectRatioPlaceholder\">\n<div class=\"aspectRatioPlaceholder-fill\"><\/div>\n<div class=\"progressiveMedia\"><img decoding=\"async\" class=\"aligncenter lazy\" title=\"\u56fe0\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" src=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/d8868206cac9255b8558b3f53ed9ba80.jpeg-wh_651x-s_3786563291.jpeg\" alt=\"\u56fe0\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" data-width=\"452\" data-height=\"49\" data-original=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/d8868206cac9255b8558b3f53ed9ba80.jpeg-wh_651x-s_3786563291.jpeg\" \/><\/div>\n<\/div>\n<\/figure>\n<p>&nbsp;<\/p>\n<p>\u8fd9\u4e2a\u547d\u4ee4\u53ef\u4ee5\u5feb\u901f\u67e5\u770b\u673a\u5668\u7684\u8d1f\u8f7d\u60c5\u51b5\u3002\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u8fd9\u4e9b\u6570\u636e\u8868\u793a\u7b49\u5f85CPU\u8d44\u6e90\u7684\u8fdb\u7a0b\u548c\u963b\u585e\u5728\u4e0d\u53ef\u4e2d\u65adIO\u8fdb\u7a0b(\u8fdb\u7a0b\u72b6\u6001\u4e3aD)\u7684\u6570\u91cf\u3002\u8fd9\u4e9b\u6570\u636e\u53ef\u4ee5\u8ba9\u6211\u4eec\u5bf9\u7cfb\u7edf\u8d44\u6e90\u4f7f\u7528\u6709\u4e00\u4e2a\u5b8f\u89c2\u7684\u4e86\u89e3\u3002<\/p>\n<p>\u547d\u4ee4\u7684\u8f93\u51fa\u5206\u522b\u8868\u793a1\u5206\u949f\u30015\u5206\u949f\u300115\u5206\u949f\u7684\u5e73\u5747\u8d1f\u8f7d\u60c5\u51b5\u3002\u901a\u8fc7\u8fd9\u4e09\u4e2a\u6570\u636e\uff0c\u53ef\u4ee5\u4e86\u89e3\u670d\u52a1\u5668\u8d1f\u8f7d\u662f\u5728\u8d8b\u4e8e\u7d27\u5f20\u8fd8\u662f\u8d8b\u4e8e\u7f13\u89e3\u3002\u5982\u679c1\u5206\u949f\u5e73\u5747\u8d1f\u8f7d\u5f88\u9ad8\uff0c\u800c15\u5206\u949f\u5e73\u5747\u8d1f\u8f7d\u5f88\u4f4e\uff0c\u8bf4\u660e\u670d\u52a1\u5668\u6b63\u5728\u547d\u4ee4\u9ad8\u8d1f\u8f7d\u60c5\u51b5\uff0c\u9700\u8981\u8fdb\u4e00\u6b65\u6392\u67e5CPU\u8d44\u6e90\u90fd\u6d88\u8017\u5728\u4e86\u54ea\u91cc\u3002\u53cd\u4e4b\uff0c\u5982\u679c15\u5206\u949f\u5e73\u5747\u8d1f\u8f7d\u5f88\u9ad8\uff0c1\u5206\u949f\u5e73\u5747\u8d1f\u8f7d\u8f83\u4f4e\uff0c\u5219\u6709\u53ef\u80fd\u662fCPU\u8d44\u6e90\u7d27\u5f20\u65f6\u523b\u5df2\u7ecf\u8fc7\u53bb\u3002<\/p>\n<p>\u4e0a\u9762\u4f8b\u5b50\u4e2d\u7684\u8f93\u51fa\uff0c\u53ef\u4ee5\u770b\u89c1\u6700\u8fd11\u5206\u949f\u7684\u5e73\u5747\u8d1f\u8f7d\u975e\u5e38\u9ad8\uff0c\u4e14\u8fdc\u9ad8\u4e8e\u6700\u8fd115\u5206\u949f\u8d1f\u8f7d\uff0c\u56e0\u6b64\u6211\u4eec\u9700\u8981\u7ee7\u7eed\u6392\u67e5\u5f53\u524d\u7cfb\u7edf\u4e2d\u6709\u4ec0\u4e48\u8fdb\u7a0b\u6d88\u8017\u4e86\u5927\u91cf\u7684\u8d44\u6e90\u3002\u53ef\u4ee5\u901a\u8fc7\u4e0b\u6587\u5c06\u4f1a\u4ecb\u7ecd\u7684vmstat\u3001mpstat\u7b49\u547d\u4ee4\u8fdb\u4e00\u6b65\u6392\u67e5\u3002<\/p>\n<p><strong>\u4e8c\u3001dmesg\u547d\u4ee4<\/strong><\/p>\n<p>&nbsp;<\/p>\n<figure class=\"aspectRatioFigure\">\n<div class=\"aspectRatioPlaceholder\">\n<div class=\"aspectRatioPlaceholder-fill\"><\/div>\n<div class=\"progressiveMedia\"><img decoding=\"async\" class=\"aligncenter lazy\" title=\"\u56fe1\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" src=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/5aa6fb196ad39f424c639a5fe03b05ca.jpeg\" alt=\"\u56fe1\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" data-width=\"640\" data-height=\"128\" data-original=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/5aa6fb196ad39f424c639a5fe03b05ca.jpeg\" \/><\/div>\n<\/div>\n<\/figure>\n<p>&nbsp;<\/p>\n<p>\u8be5\u547d\u4ee4\u4f1a\u8f93\u51fa\u7cfb\u7edf\u65e5\u5fd7\u7684\u6700\u540e10\u884c\u3002\u793a\u4f8b\u4e2d\u7684\u8f93\u51fa\uff0c\u53ef\u4ee5\u770b\u89c1\u4e00\u6b21\u5185\u6838\u7684oom kill\u548c\u4e00\u6b21TCP\u4e22\u5305\u3002\u8fd9\u4e9b\u65e5\u5fd7\u53ef\u4ee5\u5e2e\u52a9\u6392\u67e5\u6027\u80fd\u95ee\u9898\u3002\u5343\u4e07\u4e0d\u8981\u5fd8\u4e86\u8fd9\u4e00\u6b65\u3002<\/p>\n<p><strong>\u4e09\u3001vmstat\u547d\u4ee4<\/strong><\/p>\n<p>&nbsp;<\/p>\n<figure class=\"aspectRatioFigure\">\n<div class=\"aspectRatioPlaceholder\">\n<div class=\"aspectRatioPlaceholder-fill\"><\/div>\n<div class=\"progressiveMedia\"><img decoding=\"async\" class=\"aligncenter lazy\" title=\"\u56fe2\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" src=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/d989024a79a0afdd474ef9457449853d.jpeg\" alt=\"\u56fe2\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" data-width=\"596\" data-height=\"205\" data-original=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/d989024a79a0afdd474ef9457449853d.jpeg\" \/><\/div>\n<\/div>\n<\/figure>\n<p>&nbsp;<\/p>\n<p>vmstat(8) \u547d\u4ee4\uff0c\u6bcf\u884c\u4f1a\u8f93\u51fa\u4e00\u4e9b\u7cfb\u7edf\u6838\u5fc3\u6307\u6807\uff0c\u8fd9\u4e9b\u6307\u6807\u53ef\u4ee5\u8ba9\u6211\u4eec\u66f4\u8be6\u7ec6\u7684\u4e86\u89e3\u7cfb\u7edf\u72b6\u6001\u3002\u540e\u9762\u8ddf\u7684\u53c2\u65701\uff0c\u8868\u793a\u6bcf\u79d2\u8f93\u51fa\u4e00\u6b21\u7edf\u8ba1\u4fe1\u606f\uff0c\u8868\u5934\u63d0\u793a\u4e86\u6bcf\u4e00\u5217\u7684\u542b\u4e49\uff0c\u8fd9\u51e0\u4ecb\u7ecd\u4e00\u4e9b\u548c\u6027\u80fd\u8c03\u4f18\u76f8\u5173\u7684\u5217\uff1a<\/p>\n<ul>\n<li>r\uff1a\u7b49\u5f85\u5728CPU\u8d44\u6e90\u7684\u8fdb\u7a0b\u6570\u3002\u8fd9\u4e2a\u6570\u636e\u6bd4\u5e73\u5747\u8d1f\u8f7d\u66f4\u52a0\u80fd\u591f\u4f53\u73b0CPU\u8d1f\u8f7d\u60c5\u51b5\uff0c\u6570\u636e\u4e2d\u4e0d\u5305\u542b\u7b49\u5f85IO\u7684\u8fdb\u7a0b\u3002\u5982\u679c\u8fd9\u4e2a\u6570\u503c\u5927\u4e8e\u673a\u5668CPU\u6838\u6570\uff0c\u90a3\u4e48\u673a\u5668\u7684CPU\u8d44\u6e90\u5df2\u7ecf\u9971\u548c\u3002<\/li>\n<li>free\uff1a\u7cfb\u7edf\u53ef\u7528\u5185\u5b58\u6570(\u4ee5\u5343\u5b57\u8282\u4e3a\u5355\u4f4d)\uff0c\u5982\u679c\u5269\u4f59\u5185\u5b58\u4e0d\u8db3\uff0c\u4e5f\u4f1a\u5bfc\u81f4\u7cfb\u7edf\u6027\u80fd\u95ee\u9898\u3002\u4e0b\u6587\u4ecb\u7ecd\u5230\u7684free\u547d\u4ee4\uff0c\u53ef\u4ee5\u66f4\u8be6\u7ec6\u7684\u4e86\u89e3\u7cfb\u7edf\u5185\u5b58\u7684\u4f7f\u7528\u60c5\u51b5\u3002<\/li>\n<li>si\uff0cso\uff1a\u4ea4\u6362\u533a\u5199\u5165\u548c\u8bfb\u53d6\u7684\u6570\u91cf\u3002\u5982\u679c\u8fd9\u4e2a\u6570\u636e\u4e0d\u4e3a0\uff0c\u8bf4\u660e\u7cfb\u7edf\u5df2\u7ecf\u5728\u4f7f\u7528\u4ea4\u6362\u533a(swap)\uff0c\u673a\u5668\u7269\u7406\u5185\u5b58\u5df2\u7ecf\u4e0d\u8db3\u3002<\/li>\n<li>us, sy, id, wa, st\uff1a\u8fd9\u4e9b\u90fd\u4ee3\u8868\u4e86CPU\u65f6\u95f4\u7684\u6d88\u8017\uff0c\u5b83\u4eec\u5206\u522b\u8868\u793a\u7528\u6237\u65f6\u95f4(user)\u3001\u7cfb\u7edf(\u5185\u6838)\u65f6\u95f4(sys)\u3001\u7a7a\u95f2\u65f6\u95f4(idle)\u3001IO\u7b49\u5f85\u65f6\u95f4(wait)\u548c\u88ab\u5077\u8d70\u7684\u65f6\u95f4(stolen\uff0c\u4e00\u822c\u88ab\u5176\u4ed6\u865a\u62df\u673a\u6d88\u8017)\u3002<\/li>\n<\/ul>\n<p>\u4e0a\u8ff0\u8fd9\u4e9bCPU\u65f6\u95f4\uff0c\u53ef\u4ee5\u8ba9\u6211\u4eec\u5f88\u5feb\u4e86\u89e3CPU\u662f\u5426\u51fa\u4e8e\u7e41\u5fd9\u72b6\u6001\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u7528\u6237\u65f6\u95f4\u548c\u7cfb\u7edf\u65f6\u95f4\u76f8\u52a0\u975e\u5e38\u5927\uff0cCPU\u51fa\u4e8e\u5fd9\u4e8e\u6267\u884c\u6307\u4ee4\u3002\u5982\u679cIO\u7b49\u5f85\u65f6\u95f4\u5f88\u957f\uff0c\u90a3\u4e48\u7cfb\u7edf\u7684\u74f6\u9888\u53ef\u80fd\u5728\u78c1\u76d8IO\u3002<\/p>\n<p>\u793a\u4f8b\u547d\u4ee4\u7684\u8f93\u51fa\u53ef\u4ee5\u770b\u89c1\uff0c\u5927\u91cfCPU\u65f6\u95f4\u6d88\u8017\u5728\u7528\u6237\u6001\uff0c\u4e5f\u5c31\u662f\u7528\u6237\u5e94\u7528\u7a0b\u5e8f\u6d88\u8017\u4e86CPU\u65f6\u95f4\u3002\u8fd9\u4e0d\u4e00\u5b9a\u662f\u6027\u80fd\u95ee\u9898\uff0c\u9700\u8981\u7ed3\u5408r\u961f\u5217\uff0c\u4e00\u8d77\u5206\u6790\u3002<\/p>\n<p><strong>\u56db\u3001mpstat\u547d\u4ee4<\/strong><\/p>\n<p>&nbsp;<\/p>\n<figure class=\"aspectRatioFigure\">\n<div class=\"aspectRatioPlaceholder\">\n<div class=\"aspectRatioPlaceholder-fill\"><\/div>\n<div class=\"progressiveMedia\"><img decoding=\"async\" class=\"aligncenter lazy\" title=\"\u56fe3\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" src=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/ad14a3426ed0554f306d9a3245c8005d.jpeg\" alt=\"\u56fe3\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" data-width=\"640\" data-height=\"209\" data-original=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/ad14a3426ed0554f306d9a3245c8005d.jpeg\" \/><\/div>\n<\/div>\n<\/figure>\n<p>&nbsp;<\/p>\n<p>\u8be5\u547d\u4ee4\u53ef\u4ee5\u663e\u793a\u6bcf\u4e2aCPU\u7684\u5360\u7528\u60c5\u51b5\uff0c\u5982\u679c\u6709\u4e00\u4e2aCPU\u5360\u7528\u7387\u7279\u522b\u9ad8\uff0c\u90a3\u4e48\u6709\u53ef\u80fd\u662f\u4e00\u4e2a\u5355\u7ebf\u7a0b\u5e94\u7528\u7a0b\u5e8f\u5f15\u8d77\u7684\u3002<\/p>\n<p><strong>\u4e94\u3001pidstat\u547d\u4ee4<\/strong><\/p>\n<p>&nbsp;<\/p>\n<figure class=\"aspectRatioFigure\">\n<div class=\"aspectRatioPlaceholder\">\n<div class=\"aspectRatioPlaceholder-fill\"><\/div>\n<div class=\"progressiveMedia\"><img decoding=\"async\" class=\"aligncenter lazy\" title=\"\u56fe4\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" src=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/e62c6ab346eb08aa3a84b79198bd8353.jpeg\" alt=\"\u56fe4\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" data-width=\"586\" data-height=\"339\" data-original=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/e62c6ab346eb08aa3a84b79198bd8353.jpeg\" \/><\/div>\n<\/div>\n<\/figure>\n<p>&nbsp;<\/p>\n<p>pidstat\u547d\u4ee4\u8f93\u51fa\u8fdb\u7a0b\u7684CPU\u5360\u7528\u7387\uff0c\u8be5\u547d\u4ee4\u4f1a\u6301\u7eed\u8f93\u51fa\uff0c\u5e76\u4e14\u4e0d\u4f1a\u8986\u76d6\u4e4b\u524d\u7684\u6570\u636e\uff0c\u53ef\u4ee5\u65b9\u4fbf\u89c2\u5bdf\u7cfb\u7edf\u52a8\u6001\u3002\u5982\u4e0a\u7684\u8f93\u51fa\uff0c\u53ef\u4ee5\u770b\u89c1\u4e24\u4e2aJAVA\u8fdb\u7a0b\u5360\u7528\u4e86\u5c06\u8fd11600%\u7684CPU\u65f6\u95f4\uff0c\u65e2\u6d88\u8017\u4e86\u5927\u7ea616\u4e2aCPU\u6838\u5fc3\u7684\u8fd0\u7b97\u8d44\u6e90\u3002<\/p>\n<p><strong>\u516d\u3001iostat\u547d\u4ee4<\/strong><\/p>\n<p>&nbsp;<\/p>\n<figure class=\"aspectRatioFigure\">\n<div class=\"aspectRatioPlaceholder\">\n<div class=\"aspectRatioPlaceholder-fill\"><\/div>\n<div class=\"progressiveMedia\"><img decoding=\"async\" class=\"aligncenter lazy\" title=\"\u56fe5\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" src=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/bda8ba2d9e31e932d9895864062837a7.jpeg\" alt=\"\u56fe5\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" data-width=\"640\" data-height=\"222\" data-original=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/bda8ba2d9e31e932d9895864062837a7.jpeg\" \/><\/div>\n<\/div>\n<\/figure>\n<p>&nbsp;<\/p>\n<ul>\n<li>r\/s, w\/s, rkB\/s, wkB\/s\uff1a\u5206\u522b\u8868\u793a\u6bcf\u79d2\u8bfb\u5199\u6b21\u6570\u548c\u6bcf\u79d2\u8bfb\u5199\u6570\u636e\u91cf(\u5343\u5b57\u8282)\u3002\u8bfb\u5199\u91cf\u8fc7\u5927\uff0c\u53ef\u80fd\u4f1a\u5f15\u8d77\u6027\u80fd\u95ee\u9898\u3002<\/li>\n<li>await\uff1aIO\u64cd\u4f5c\u7684\u5e73\u5747\u7b49\u5f85\u65f6\u95f4\uff0c\u5355\u4f4d\u662f\u6beb\u79d2\u3002\u8fd9\u662f\u5e94\u7528\u7a0b\u5e8f\u5728\u548c\u78c1\u76d8\u4ea4\u4e92\u65f6\uff0c\u9700\u8981\u6d88\u8017\u7684\u65f6\u95f4\uff0c\u5305\u62ecIO\u7b49\u5f85\u548c\u5b9e\u9645\u64cd\u4f5c\u7684\u8017\u65f6\u3002\u5982\u679c\u8fd9\u4e2a\u6570\u503c\u8fc7\u5927\uff0c\u53ef\u80fd\u662f\u786c\u4ef6\u8bbe\u5907\u9047\u5230\u4e86\u74f6\u9888\u6216\u8005\u51fa\u73b0\u6545\u969c\u3002<\/li>\n<li>avgqu-sz\uff1a\u5411\u8bbe\u5907\u53d1\u51fa\u7684\u8bf7\u6c42\u5e73\u5747\u6570\u91cf\u3002\u5982\u679c\u8fd9\u4e2a\u6570\u503c\u5927\u4e8e1\uff0c\u53ef\u80fd\u662f\u786c\u4ef6\u8bbe\u5907\u5df2\u7ecf\u9971\u548c(\u90e8\u5206\u524d\u7aef\u786c\u4ef6\u8bbe\u5907\u652f\u6301\u5e76\u884c\u5199\u5165)\u3002<\/li>\n<li>%util\uff1a\u8bbe\u5907\u5229\u7528\u7387\u3002\u8fd9\u4e2a\u6570\u503c\u8868\u793a\u8bbe\u5907\u7684\u7e41\u5fd9\u7a0b\u5ea6\uff0c\u7ecf\u9a8c\u503c\u662f\u5982\u679c\u8d85\u8fc760\uff0c\u53ef\u80fd\u4f1a\u5f71\u54cdIO\u6027\u80fd(\u53ef\u4ee5\u53c2\u7167IO\u64cd\u4f5c\u5e73\u5747\u7b49\u5f85\u65f6\u95f4)\u3002\u5982\u679c\u5230\u8fbe100%\uff0c\u8bf4\u660e\u786c\u4ef6\u8bbe\u5907\u5df2\u7ecf\u9971\u548c\u3002<\/li>\n<\/ul>\n<p>\u5982\u679c\u663e\u793a\u7684\u662f\u903b\u8f91\u8bbe\u5907\u7684\u6570\u636e\uff0c\u90a3\u4e48\u8bbe\u5907\u5229\u7528\u7387\u4e0d\u4ee3\u8868\u540e\u7aef\u5b9e\u9645\u7684\u786c\u4ef6\u8bbe\u5907\u5df2\u7ecf\u9971\u548c\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u5373\u4f7fIO\u6027\u80fd\u4e0d\u7406\u60f3\uff0c\u4e5f\u4e0d\u4e00\u5b9a\u610f\u5473\u8fd9\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u4f1a\u4e0d\u597d\uff0c\u53ef\u4ee5\u5229\u7528\u8bf8\u5982\u9884\u8bfb\u53d6\u3001\u5199\u7f13\u5b58\u7b49\u7b56\u7565\u63d0\u5347\u5e94\u7528\u6027\u80fd\u3002<\/p>\n<p><strong>\u4e03\u3001free\u547d\u4ee4<\/strong><\/p>\n<p>&nbsp;<\/p>\n<figure class=\"aspectRatioFigure\">\n<div class=\"aspectRatioPlaceholder\">\n<div class=\"aspectRatioPlaceholder-fill\"><\/div>\n<div class=\"progressiveMedia\"><img decoding=\"async\" class=\"aligncenter lazy\" title=\"\u56fe6\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" src=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/4d378cd7542302f87fadb402158713fe.jpeg\" alt=\"\u56fe6\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" data-width=\"531\" data-height=\"120\" data-original=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/4d378cd7542302f87fadb402158713fe.jpeg\" \/><\/div>\n<\/div>\n<\/figure>\n<p>&nbsp;<\/p>\n<p>free\u547d\u4ee4\u53ef\u4ee5\u67e5\u770b\u7cfb\u7edf\u5185\u5b58\u7684\u4f7f\u7528\u60c5\u51b5\uff0c-m\u53c2\u6570\u8868\u793a\u6309\u7167\u5146\u5b57\u8282\u5c55\u793a\u3002\u6700\u540e\u4e24\u5217\u5206\u522b\u8868\u793a\u7528\u4e8eIO\u7f13\u5b58\u7684\u5185\u5b58\u6570\uff0c\u548c\u7528\u4e8e\u6587\u4ef6\u7cfb\u7edf\u9875\u7f13\u5b58\u7684\u5185\u5b58\u6570\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u7b2c\u4e8c\u884c-\/+ buffers\/cache\uff0c\u770b\u4e0a\u53bb\u7f13\u5b58\u5360\u7528\u4e86\u5927\u91cf\u5185\u5b58\u7a7a\u95f4\u3002<\/p>\n<p>\u8fd9\u662fLinux\u7cfb\u7edf\u7684\u5185\u5b58\u4f7f\u7528\u7b56\u7565\uff0c\u5c3d\u53ef\u80fd\u7684\u5229\u7528\u5185\u5b58\uff0c\u5982\u679c\u5e94\u7528\u7a0b\u5e8f\u9700\u8981\u5185\u5b58\uff0c\u8fd9\u90e8\u5206\u5185\u5b58\u4f1a\u7acb\u5373\u88ab\u56de\u6536\u5e76\u5206\u914d\u7ed9\u5e94\u7528\u7a0b\u5e8f\u3002\u56e0\u6b64\uff0c\u8fd9\u90e8\u5206\u5185\u5b58\u4e00\u822c\u4e5f\u88ab\u5f53\u6210\u662f\u53ef\u7528\u5185\u5b58\u3002<\/p>\n<p>\u5982\u679c\u53ef\u7528\u5185\u5b58\u975e\u5e38\u5c11\uff0c\u7cfb\u7edf\u53ef\u80fd\u4f1a\u52a8\u7528\u4ea4\u6362\u533a(\u5982\u679c\u914d\u7f6e\u4e86\u7684\u8bdd)\uff0c\u8fd9\u6837\u4f1a\u589e\u52a0IO\u5f00\u9500(\u53ef\u4ee5\u5728iostat\u547d\u4ee4\u4e2d\u63d0\u73b0)\uff0c\u964d\u4f4e\u7cfb\u7edf\u6027\u80fd\u3002<\/p>\n<p><strong>\u516b\u3001sar\u547d\u4ee4<\/strong><\/p>\n<p>&nbsp;<\/p>\n<figure class=\"aspectRatioFigure\">\n<div class=\"aspectRatioPlaceholder\">\n<div class=\"aspectRatioPlaceholder-fill\"><\/div>\n<div class=\"progressiveMedia\"><img decoding=\"async\" class=\"aligncenter lazy\" title=\"\u56fe7\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" src=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/4850ba152b6c00c65ea44eb488ebaf58.jpeg\" alt=\"\u56fe7\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" data-width=\"640\" data-height=\"203\" data-original=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/4850ba152b6c00c65ea44eb488ebaf58.jpeg\" \/><\/div>\n<\/div>\n<\/figure>\n<p>&nbsp;<\/p>\n<p>sar\u547d\u4ee4\u5728\u8fd9\u91cc\u53ef\u4ee5\u67e5\u770b\u7f51\u7edc\u8bbe\u5907\u7684\u541e\u5410\u7387\u3002\u5728\u6392\u67e5\u6027\u80fd\u95ee\u9898\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u7f51\u7edc\u8bbe\u5907\u7684\u541e\u5410\u91cf\uff0c\u5224\u65ad\u7f51\u7edc\u8bbe\u5907\u662f\u5426\u5df2\u7ecf\u9971\u548c\u3002\u5982\u793a\u4f8b\u8f93\u51fa\u4e2d\uff0ceth0\u7f51\u5361\u8bbe\u5907\uff0c\u541e\u5410\u7387\u5927\u6982\u572822 Mbytes\/s\uff0c\u65e2176 Mbits\/sec\uff0c\u6ca1\u6709\u8fbe\u52301Gbit\/sec\u7684\u786c\u4ef6\u4e0a\u9650\u3002<\/p>\n<p>&nbsp;<\/p>\n<figure class=\"aspectRatioFigure\">\n<div class=\"aspectRatioPlaceholder\">\n<div class=\"aspectRatioPlaceholder-fill\"><\/div>\n<div class=\"progressiveMedia\"><img decoding=\"async\" class=\"aligncenter lazy\" title=\"\u56fe8\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" src=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/dbafd9cfa944cfa819e0ba70f71876fc.jpeg\" alt=\"\u56fe8\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" data-width=\"593\" data-height=\"265\" data-original=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/dbafd9cfa944cfa819e0ba70f71876fc.jpeg\" \/><\/div>\n<\/div>\n<\/figure>\n<p>&nbsp;<\/p>\n<p>sar\u547d\u4ee4\u5728\u8fd9\u91cc\u7528\u4e8e\u67e5\u770bTCP\u8fde\u63a5\u72b6\u6001\uff0c\u5176\u4e2d\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>active\/s\uff1a\u6bcf\u79d2\u672c\u5730\u53d1\u8d77\u7684TCP\u8fde\u63a5\u6570\uff0c\u65e2\u901a\u8fc7connect\u8c03\u7528\u521b\u5efa\u7684TCP\u8fde\u63a5;<\/li>\n<li>passive\/s\uff1a\u6bcf\u79d2\u8fdc\u7a0b\u53d1\u8d77\u7684TCP\u8fde\u63a5\u6570\uff0c\u5373\u901a\u8fc7accept\u8c03\u7528\u521b\u5efa\u7684TCP\u8fde\u63a5;<\/li>\n<li>retrans\/s\uff1a\u6bcf\u79d2TCP\u91cd\u4f20\u6570\u91cf;<\/li>\n<\/ul>\n<p>TCP\u8fde\u63a5\u6570\u53ef\u4ee5\u7528\u6765\u5224\u65ad\u6027\u80fd\u95ee\u9898\u662f\u5426\u7531\u4e8e\u5efa\u7acb\u4e86\u8fc7\u591a\u7684\u8fde\u63a5\uff0c\u8fdb\u4e00\u6b65\u53ef\u4ee5\u5224\u65ad\u662f\u4e3b\u52a8\u53d1\u8d77\u7684\u8fde\u63a5\uff0c\u8fd8\u662f\u88ab\u52a8\u63a5\u53d7\u7684\u8fde\u63a5\u3002TCP\u91cd\u4f20\u53ef\u80fd\u662f\u56e0\u4e3a\u7f51\u7edc\u73af\u5883\u6076\u52a3\uff0c\u6216\u8005\u670d\u52a1\u5668\u538b<\/p>\n<p><strong>\u4e5d\u3001top\u547d\u4ee4<\/strong><\/p>\n<p>&nbsp;<\/p>\n<figure class=\"aspectRatioFigure\">\n<div class=\"aspectRatioPlaceholder\">\n<div class=\"aspectRatioPlaceholder-fill\"><\/div>\n<div class=\"progressiveMedia\"><img decoding=\"async\" class=\"aligncenter lazy\" title=\"\u56fe9\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" src=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/8819d596f24951c14ba1e3cc77774c74.jpeg\" alt=\"\u56fe9\uff1a\u7528\u4e5d\u6761\u547d\u4ee4\u5728\u4e00\u5206\u949f\u5185\u68c0\u67e5Linux\u670d\u52a1\u5668\u6027\u80fd\" data-width=\"605\" data-height=\"411\" data-original=\"https:\/\/cdn.jiler.cn\/techug\/uploads\/2019\/07\/8819d596f24951c14ba1e3cc77774c74.jpeg\" \/><\/div>\n<\/div>\n<\/figure>\n<p>&nbsp;<\/p>\n<p>top\u547d\u4ee4\u5305\u542b\u4e86\u524d\u9762\u597d\u51e0\u4e2a\u547d\u4ee4\u7684\u68c0\u67e5\u7684\u5185\u5bb9\u3002\u6bd4\u5982\u7cfb\u7edf\u8d1f\u8f7d\u60c5\u51b5(uptime)\u3001\u7cfb\u7edf\u5185\u5b58\u4f7f\u7528\u60c5\u51b5(free)\u3001\u7cfb\u7edfCPU\u4f7f\u7528\u60c5\u51b5(vmstat)\u7b49\u3002\u56e0\u6b64\u901a\u8fc7\u8fd9\u4e2a\u547d\u4ee4\uff0c\u53ef\u4ee5\u76f8\u5bf9\u5168\u9762\u7684\u67e5\u770b\u7cfb\u7edf\u8d1f\u8f7d\u7684\u6765\u6e90\u3002\u540c\u65f6\uff0ctop\u547d\u4ee4\u652f\u6301\u6392\u5e8f\uff0c\u53ef\u4ee5\u6309\u7167\u4e0d\u540c\u7684\u5217\u6392\u5e8f\uff0c\u65b9\u4fbf\u67e5\u627e\u51fa\u8bf8\u5982\u5185\u5b58\u5360\u7528\u6700\u591a\u7684\u8fdb\u7a0b\u3001CPU\u5360\u7528\u7387\u6700\u9ad8\u7684\u8fdb\u7a0b\u7b49\u3002<\/p>\n<p>\u4f46\u662f\uff0ctop\u547d\u4ee4\u76f8\u5bf9\u4e8e\u524d\u9762\u4e00\u4e9b\u547d\u4ee4\uff0c\u8f93\u51fa\u662f\u4e00\u4e2a\u77ac\u95f4\u503c\uff0c\u5982\u679c\u4e0d\u6301\u7eed\u76ef\u7740\uff0c\u53ef\u80fd\u4f1a\u9519\u8fc7\u4e00\u4e9b\u7ebf\u7d22\u3002\u8fd9\u65f6\u53ef\u80fd\u9700\u8981\u6682\u505ctop\u547d\u4ee4\u5237\u65b0\uff0c\u6765\u8bb0\u5f55\u548c\u6bd4\u5bf9\u6570\u636e\u3002<\/p>\n<\/div>\n<div class=\"entry-content content2\"><center><\/center><\/p>\n<h5 class=\"sd-title\">\u5206\u4eab\u8fd9\u7bc7\u6587\u7ae0\uff1a<\/h5>\n<section class=\"c square_shares\">\n<div class=\"other_shares\">\n<div class=\" bottom-share-buttons\">\n<div class=\"shares-wrapper\">\n<div class=\"bdsharebuttonbox\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<div class=\"qr_table\">\n<div class=\"related_cell\">\n<h5 class=\"sd-title\">\u76f8\u5173\u6587\u7ae0\uff1a<\/h5>\n<ol>\n<li><a href=\"https:\/\/www.techug.com\/post\/linus-torvalds-linux.html\">Linus Torvalds \u8bf4\u6ca1\u6709\u4ed6 Linux \u80fd\u7ee7\u7eed\u524d\u8fdb<\/a><\/li>\n<li><a href=\"https:\/\/www.techug.com\/post\/useful-online-tools-linux.html\">\u5bf9\u4e8eLinux\u7cfb\u7edf\u7ba1\u7406\u5458\u5f88\u6709\u7528\u768416\u4e2a\u5728\u7ebf\u5de5\u5177<\/a><\/li>\n<li><a href=\"https:\/\/www.techug.com\/post\/8-reasons-lxde-as-linux-desktop.html\">\u9009\u62e9LXDE\u4f5c\u4e3aLinux\u684c\u9762\u7684\u516b\u5927\u7406\u7531<\/a><\/li>\n<li><a href=\"https:\/\/www.techug.com\/post\/10-most-dangous-command-in-linux.html\">Linux\u91cc10\u4e2a\u6700\u5371\u9669\u7684\u547d\u4ee4<\/a><\/li>\n<li><a href=\"https:\/\/www.techug.com\/post\/linux-process-run-background.html\">Linux \u2013 \u8bf7\u5141\u8bb8\u6211\u9759\u9759\u5730\u540e\u53f0\u8fd0\u884c<\/a><\/li>\n<li><a href=\"https:\/\/www.techug.com\/post\/leap-second-cause-linux-down.html\">\u95f0\u79d2\u4e3a\u4ec0\u4e48\u4f1a\u5bfc\u81f4linux\u51fa\u73b0\u95ee\u9898<\/a><\/li>\n<li><a href=\"https:\/\/www.techug.com\/post\/linux-developer-abandons-vmware-lawsuit.html\">Linux\u5f00\u53d1\u8005\u653e\u5f03\u5bf9VMware\u6e90\u7801\u4fb5\u6743\u6848\u7684\u8bc9\u8bbc\uff1a\u65e0\u610f\u4e49<\/a><\/li>\n<li><a href=\"https:\/\/www.techug.com\/post\/opinion-antivirus-in-linux.html\">\u8c08\u8c08Linux 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