{"id":524,"date":"2024-11-06T23:17:26","date_gmt":"2024-11-06T15:17:26","guid":{"rendered":"http:\/\/www.wengdao.net\/?p=524"},"modified":"2024-11-06T23:24:31","modified_gmt":"2024-11-06T15:24:31","slug":"linux-%e8%b4%9f%e8%bd%bd%e8%bf%87%e9%ab%98%ef%bc%8c%e6%8e%92%e6%9f%a5%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/jiandao.zliby.com\/?p=524","title":{"rendered":"linux \u670d\u52a1\u9879\u76ee\u5361\u987f\u8d1f\u8f7d\u6392\u67e5"},"content":{"rendered":"<p>\u4e00\u4e2a\u4e0a\u7ebf\u8fd0\u884c\u6b63\u5e38\u7684\u9879\u76ee\uff0c\u7a81\u7136\u51fa\u73b0\u5361\u987f\u8d1f\u8f7d\u95ee\u9898\uff0c\u5982\u4f55\u6392\u67e5\uff0c\u7a81\u7136\u7684\u5f02\u5e38\uff0c\u5927\u591a\u6570\u6765\u81ea\u8fd1\u671f\u7684\u67d0\u4e9b\u64cd\u4f5c\u5f15\u8d77\uff0c\u800c\u8fd9\u4e9b\u4e00\u822c\u901a\u8fc7\u51e0\u6b65\u5c31\u80fd\u5b9a\u4f4d\u5230\u95ee\u9898\u70b9\u3002<\/p>\n<p><strong> \u786e\u8ba4\u7cfb\u7edf\u8d1f\u8f7d\u72b6\u6001<\/strong><br \/>\n\u4f7f\u7528 top \u6216 htop \u5b9e\u65f6\u67e5\u770b\u7cfb\u7edf\u8d44\u6e90\u7684\u4f7f\u7528\u60c5\u51b5\uff0c\u5305\u62ec CPU\u3001\u5185\u5b58\u548c I\/O \u7b49\uff0c\u5e76\u663e\u793a\u54ea\u4e2a\u8fdb\u7a0b\u5360\u7528\u4e86\u6700\u591a\u8d44\u6e90\uff08\u63a8\u8350\u4f7f\u7528htop \u4f53\u9a8c\u66f4\u597d\uff09\u3002<\/p>\n<p><strong>\u786e\u8ba4\u8d1f\u8f7d\u98d9\u5347\u95ee\u9898\u6765\u81ea\u5185\u90e8\u8fd8\u662f\u5916\u90e8<\/strong><br \/>\n\u5185\u90e8\u8ffd\u67e5\u6700\u8fd1\u7684\u66f4\u65b0\uff0c\u5305\u62ec\uff0c\u7a0b\u5e8f\u66f4\u65b0\uff0c\u8f6f\u4ef6\u66f4\u65b0\uff0c\u7cfb\u7edf\u66f4\u65b0\uff0c<br \/>\n\u5916\u90e8\u786e\u8ba4\u670d\u52a1\u662f\u5426\u88ab DDoS \u653b\u51fb\u6216\u9ad8\u9891\u8bf7\u6c42\u3002<br \/>\n\u67e5\u770b\u65e5\u5fd7\u7cfb\u7edf\u662f\u5426\u6709\u5f02\u5e38\u65e5\u5fd7<\/p>\n<p><strong> \u5176\u4ed6\u76f8\u5173\u8ffd\u67e5\u547d\u4ee4:<\/strong><\/p>\n<ul>\n<li>\n<p>mpstat\uff1a\u67e5\u770b\u591a\u6838 CPU \u7684\u4f7f\u7528\u60c5\u51b5\uff0c\u8bc6\u522b\u662f\u5426\u6709\u67d0\u4e2a\u6838\u7684\u4f7f\u7528\u7387\u7279\u522b\u9ad8\u3002<\/p>\n<\/li>\n<li>\n<p>pidstat\uff1a\u53ef\u4ee5\u6309\u8fdb\u7a0b\u8be6\u7ec6\u5206\u6790 CPU \u4f7f\u7528\u60c5\u51b5\uff0c\u4f8b\u5982 pidstat -u 1 \u67e5\u770b\u6bcf\u79d2\u7684 CPU \u4f7f\u7528\u7387\u3002<\/p>\n<\/li>\n<li>\n<p>vmstat\/iostat: \u67e5\u770b\u7cfb\u7edf\u662f\u5426\u56e0\u4e3a\u5927\u91cf\u4e2d\u65ad\u5bfc\u81f4 CPU \u8fc7\u8f7d\u3002<\/p>\n<\/li>\n<li>\n<p>free -m\uff1a\u68c0\u67e5\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\uff0c\u67e5\u770b\u662f\u5426\u6709\u5927\u91cf\u5185\u5b58\u88ab\u4f7f\u7528\uff0c\u5c24\u5176\u662f swap\uff08\u4ea4\u6362\u5206\u533a\uff09\u662f\u5426\u5728\u9891\u7e41\u4f7f\u7528\uff0c\u53ef\u80fd\u4f1a\u62d6\u6162\u7cfb\u7edf\u3002<\/p>\n<\/li>\n<li>\n<p>smem\/pmap\uff1a\u53ef\u4ee5\u68c0\u67e5\u8fdb\u7a0b\u7684\u8be6\u7ec6\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\uff0c\u5c24\u5176\u5728\u9700\u8981\u5206\u6790\u8fdb\u7a0b\u5185\u5b58\u5206\u5e03\u65f6\u3002<\/p>\n<\/li>\n<li>\n<p>iftop\/nload \u7b49\u5de5\u5177\u67e5\u770b\u7f51\u7edc\u6d41\u91cf\uff0c\u5173\u6ce8\u662f\u5426\u6709\u5355\u4e00 IP \u6216\u67d0\u4e9b IP \u6bb5\u5728\u77ed\u65f6\u95f4\u5185\u6d88\u8017\u5927\u91cf\u5e26\u5bbd<\/p>\n<\/li>\n<li>\n<p>ss -s   \u53ef\u4ee5\u67e5\u770b\u7cfb\u7edf\u7684 TCP \u548c UDP \u8fde\u63a5\u7edf\u8ba1\u60c5\u51b5<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u4e2a\u4e0a\u7ebf\u8fd0\u884c\u6b63\u5e38\u7684\u9879\u76ee\uff0c\u7a81\u7136\u51fa\u73b0\u5361\u987f\u8d1f\u8f7d\u95ee\u9898\uff0c\u5982\u4f55\u6392\u67e5\uff0c\u7a81\u7136\u7684\u5f02\u5e38\uff0c\u5927\u591a\u6570\u6765\u81ea\u8fd1\u671f\u7684\u67d0\u4e9b\u64cd\u4f5c\u5f15\u8d77\uff0c\u800c\u8fd9\u4e9b\u4e00\u822c\u901a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/jiandao.zliby.com\/index.php?rest_route=\/wp\/v2\/posts\/524"}],"collection":[{"href":"https:\/\/jiandao.zliby.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jiandao.zliby.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jiandao.zliby.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jiandao.zliby.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=524"}],"version-history":[{"count":4,"href":"https:\/\/jiandao.zliby.com\/index.php?rest_route=\/wp\/v2\/posts\/524\/revisions"}],"predecessor-version":[{"id":528,"href":"https:\/\/jiandao.zliby.com\/index.php?rest_route=\/wp\/v2\/posts\/524\/revisions\/528"}],"wp:attachment":[{"href":"https:\/\/jiandao.zliby.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=524"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jiandao.zliby.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=524"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jiandao.zliby.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=524"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}