{"id":231,"date":"2022-05-12T13:48:37","date_gmt":"2022-05-12T05:48:37","guid":{"rendered":"https:\/\/www.qiangzhenshuai.com\/?p=231"},"modified":"2022-08-02T13:22:41","modified_gmt":"2022-08-02T05:22:41","slug":"231","status":"publish","type":"post","link":"https:\/\/www.qiangzhenshuai.com\/?p=231","title":{"rendered":"Linux-\u8fdb\u7a0b\u7ba1\u7406"},"content":{"rendered":"<!--more-->\r\n<h1>1.\u4ec0\u4e48\u662f\u8fdb\u7a0b<\/h1>\r\n<p>\u8fdb\u7a0b\u662f\u4e00\u4e2a\u5176\u4e2d\u8fd0\u884c\u7740\u4e00\u4e2a\u6216\u591a\u4e2a\u7ebf\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u548c\u8fd9\u4e9b\u7ebf\u7a0b\u6240\u9700\u8981\u7684\u7cfb\u7edf\u8d44\u6e90\u3002\u4e00\u822c\u6765\u8bf4\uff0cLinux\u7cfb\u7edf\u4f1a\u5728\u8fdb\u7a0b\u4e4b\u95f4\u5171\u4eab\u7a0b\u5e8f\u4ee3\u7801\u548c\u7cfb\u7edf\u51fd\u6570\u5e93\uff0c\u6240\u4ee5\u5728\u4efb\u4f55\u65f6\u523b\u5185\u5b58\u4e2d\u90fd\u53ea\u6709\u4ee3\u7801\u7684\u4e00\u4efd\u62f7\u8d1d<br \/>\u6bd4\u5982: 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\/>c\uff1a\u5217\u51fa\u8fdb\u7a0b\u65f6\uff0c\u663e\u793a\u6bcf\u4e2a\u8fdb\u7a0b\u771f\u6b63\u7684\u6307\u4ee4\u540d\u79f0 <br \/>-f\uff1a\u663e\u793aUID\u3001PID\u3001PPID\u3001C\u3001STIME\u3001TTY\u3001TIME\u3001CMD\u680f\u4f4d <br \/>u\uff1a\u4ee5\u7528\u6237\u4e3a\u4e3b\u7684\u683c\u5f0f\u6765\u663e\u793a\u8fdb\u7a0b\u72b6\u51b5 <br \/>x\uff1a\u663e\u793a\u6240\u6709\u8fdb\u7a0b<\/pre>\r\n<h3>\u67e5\u770b\u8fdb\u7a0b \u7528\u6237\u3001PID\u3001\u5360\u7528cpu\u767e\u5206\u6bd4\u3001\u5360\u7528\u5185\u5b58\u767e\u5206\u6bd4\u3001\u72b6\u6001\u3001\u6267\u884c\u7684\u547d\u4ee4\u7b49<\/h3>\r\n\r\n<figure class=\"wp-block-table\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td><strong>\u72b6\u6001<\/strong><\/td>\r\n<td><strong>\u63cf\u8ff0<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td>USER<\/td>\r\n<td>\u542f\u52a8\u8fdb\u7a0b\u7684\u7528\u6237<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>PID<\/td>\r\n<td>\u8fdb\u7a0b\u8fd0\u884c\u7684ID\u53f7<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>%CPU<\/td>\r\n<td>\u8fdb\u7a0b\u5360\u7528CPU\u767e\u5206\u6bd4<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>%MEM<\/td>\r\n<td>\u8fdb\u7a0b\u5360\u7528\u5185\u5b58\u767e\u5206\u6bd4<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>VSZ<\/td>\r\n<td>\u8fdb\u7a0b\u5360\u7528\u865a\u62df\u5185\u5b58\u5927\u5c0f (\u5355\u4f4dKB)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>RSS<\/td>\r\n<td>\u8fdb\u7a0b\u5360\u7528\u7269\u7406\u5185\u5b58\u5b9e\u9645\u5927\u5c0f (\u5355\u4f4dKB)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>TTY<\/td>\r\n<td>\u8fdb\u7a0b\u662f\u7531\u54ea\u4e2a\u7ec8\u7aef\u8fd0\u884c\u542f\u52a8\u7684tty1\u3001pts\/0\u7b49 ?\u8868\u793a\u5185\u6838\u7a0b\u5e8f\u4e0e\u7ec8\u7aef\u65e0\u5173<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>STAT<\/td>\r\n<td>\u8fdb\u7a0b\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u7684\u72b6\u6001 man ps \uff08\/STATE\uff09<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>START<\/td>\r\n<td>\u8fdb\u7a0b\u7684\u542f\u52a8\u65f6\u95f4<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>TIME<\/td>\r\n<td>\u8fdb\u7a0b\u5360\u7528 CPU \u7684\u603b\u65f6\u95f4(\u4e3a0\u8868\u793a\u8fd8\u6ca1\u8d85\u8fc7\u79d2)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>COMMAND<\/td>\r\n<td>\u7a0b\u5e8f\u7684\u8fd0\u884c\u6307\u4ee4\uff0c[ \u65b9\u62ec\u53f7 ] \u5c5e\u4e8e\u5185\u6838\u6001\u7684\u8fdb\u7a0b\u3002 \u6ca1\u6709 [ ]\u7684\u662f\u7528\u6237\u6001\u8fdb\u7a0b<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n<p>&nbsp;<\/p>\r\n<h3>2.STAT\u72b6\u6001\u7684S\u3001Ss\u3001S+\u3001R\u3001R\u3001S+\u7b49\u7b49\uff0c\u90fd\u662f\u4ec0\u4e48\u610f\u601d?<\/h3>\r\n\r\n<figure class=\"wp-block-table\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td><strong>STAT\u57fa\u672c\u72b6\u6001<\/strong><\/td>\r\n<td><strong>\u63cf\u8ff0<\/strong><\/td>\r\n<td><strong>STAT\u72b6\u6001+\u7b26\u53f7<\/strong><\/td>\r\n<td><strong>\u63cf\u8ff0<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td>R<\/td>\r\n<td>\u8fdb\u7a0b\u8fd0\u884c<\/td>\r\n<td>s<\/td>\r\n<td>\u8fdb\u7a0b\u662f\u63a7\u5236\u8fdb\u7a0b\uff0c Ss\u8fdb\u7a0b\u7684\u9886\u5bfc\u8005\uff0c\u7236\u8fdb\u7a0b<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>S<\/td>\r\n<td>\u53ef\u4e2d\u65ad\u8fdb\u7a0b(\u53ef\u4ee5\u968f\u65f6\u505c\u6b62)<\/td>\r\n<td>&lt;<\/td>\r\n<td>\u8fdb\u7a0b\u8fd0\u884c\u5728\u9ad8\u4f18\u5148\u7ea7\u4e0a\uff0cS&lt;\u4f18\u5148\u7ea7\u8f83\u9ad8\u7684\u8fdb\u7a0b<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>T<\/td>\r\n<td>\u8fdb\u7a0b\u88ab\u6682\u505c(\u6302\u8d77)<\/td>\r\n<td>N<\/td>\r\n<td>\u8fdb\u7a0b\u8fd0\u884c\u5728\u4f4e\u4f18\u5148\u7ea7\u4e0a\uff0cSN\u4f18\u5148\u7ea7\u8f83\u4f4e\u7684\u8fdb\u7a0b<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>D<\/td>\r\n<td>\u4e0d\u53ef\u4e2d\u65ad\u8fdb\u7a0b(IO)<\/td>\r\n<td>+<\/td>\r\n<td>\u5f53\u524d\u8fdb\u7a0b\u8fd0\u884c\u5728\u524d\u53f0\uff0cR+\u8be5\u8868\u793a\u8fdb\u7a0b\u5728\u524d\u53f0\u8fd0\u884c<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Z<\/td>\r\n<td>\u50f5\u5c38\u8fdb\u7a0b<\/td>\r\n<td>l(\u5c0f\u5199L\uff09<\/td>\r\n<td>\u8fdb\u7a0b\u662f\u591a\u7ebf\u7a0b\u7684\uff0cSl\u8868\u793a\u8fdb\u7a0b\u662f\u4ee5\u7ebf\u7a0b\u65b9\u5f0f\u8fd0\u884c<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<p>&nbsp;<\/p>\r\n<\/figure>\r\n<h2>\u52a8\u6001\u76d1\u63a7\u8fdb\u7a0b<\/h2>\r\n<h3>top\u5e38\u89c1\u6307\u4ee4\uff08\u8fd9\u662f\u4f7f\u7528top\u547d\u4ee4\u8fdb\u5165\u91cc\u5934\u4f7f\u7528\u7684\uff09<\/h3>\r\n<pre>h\uff1a\u67e5\u770b\u5e2e\u51fa <br \/>z\uff1a\u4ee5\u5f69\u8272\u4fe1\u606f\u5c55\u793a <br \/>1\uff1a\u663e\u793a\u6240\u6709CPU\u7684\u8d1f\u8f7d <br \/>s\uff1a\u8bbe\u7f6e\u5237\u65b0\u65f6\u95f4 <br \/>b\uff1a\u9ad8\u4eae\u73b0\u5b9e\u5904\u4e8eR\u72b6\u6001\u7684\u8fdb\u7a0b <br \/>M\uff1a\u6309\u5185\u5b58\u4f7f\u7528\u767e\u5206\u6bd4\u6392\u5e8f\u8f93\u51fa <br \/>P\uff1a\u6309CPU\u4f7f\u7528\u767e\u5206\u6bd4\u6392\u5e8f\u8f93\u51fa <br \/>R\uff1a\u5bf9\u6392\u5e8f\u8fdb\u884c\u53cd\u8f6c <br \/>f\uff1a\u81ea\u5b9a\u4e49\u663e\u793a\u5b57\u6bb5 <br \/>k\uff1akill\u6389\u6307\u5b9aPID\u8fdb\u7a0b <br \/>W\uff1a\u4fdd\u5b58top\u73af\u5883\u8bbe\u7f6e ~\/.toprc <br \/>q\uff1a\u9000\u51fa<\/pre>\r\n<h3>top\u5e38\u89c1\u6307\u4ee4<\/h3>\r\n<pre>-b\uff1a\u4ee5\u6279\u5904\u7406\u6a21\u5f0f\u663e\u793a\u7a0b\u5e8f\u4fe1\u606f <br \/>-S\uff1a\u4ee5\u7d2f\u79ef\u6a21\u5f0f\u663e\u793a\u7a0b\u5e8f\u4fe1\u606f <br \/>-n 2\uff1a\u8bbe\u7f6e\u4fe1\u606f\u66f4\u65b0\u6b21\u6570,\u8868\u793a\u66f4\u65b02\u6b21\u540e\u7ec8\u6b62\u66f4\u65b0\u663e\u793a <br \/>-d -3\uff1a\u8bbe\u7f6e\u4fe1\u606f\u66f4\u65b0\u65f6\u95f4,\u8868\u793a\u66f4\u65b0\u5468\u671f\u4e3a3\u79d2 <br \/>-p 12138\uff1a\u663e\u793a\u8fdb\u7a0b\u53f7\u4e3a12138\u7684\u8fdb\u7a0b\u4fe1\u606f\uff0cCPU\u3001\u5185\u5b58\u5360\u7528\u7387\u7b49<\/pre>\r\n<h3>top\u547d\u4ee4\u6bcf\u884c\u89e3\u91ca<\/h3>\r\n<pre>[root@dmxsp ~]# top <br \/>top - 14:07:51 up 23:56, 1 user, load average: 0.00, 0.01, 0.05 <br \/>Tasks: 95 total, 1 running, 94 sleeping, 0 stopped, 0 zombie <br \/>%Cpu(s): 0.3 us, 0.3 sy, 0.0 ni, 99.3 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st <br \/>KiB Mem : 995684 total, 256856 free, 119032 used, 619796 buff\/cache <br \/>KiB Swap: 2097148 total, 2096884 free, 264 used. 721072 avail Mem<\/pre>\r\n<h3>\u7b2c\u4e00\u884c<\/h3>\r\n<pre>top - 14:07:51 up 23:56, 1 user, load average: 0.00, 0.01, 0.05 <br \/>14:07:51\uff1a\u5f53\u524d\u65f6\u95f4 <br \/>up 23:56\uff1a\u7cfb\u7edf\u8fd0\u884c\u65f6\u95f4\uff0c\u683c\u5f0f\u4e3a\u65f6:\u5206 <br \/>1 user\uff1a\u5f53\u524d\u767b\u5f55\u7528\u6237\u6570 <br \/>load average: 0.00, 0.01, 0.05\uff1a\u7cfb\u7edf\u8d1f\u8f7d\uff0c\u5373\u4efb\u52a1\u961f\u5217\u7684\u5e73\u5747\u957f\u5ea6\uff0c\u4e09\u4e2a\u6570\u503c\u5206\u522b\u4e3a 1\u5206\u949f\u30015\u5206\u949f\u300115\u5206\u949f\u524d\u5230\u73b0\u5728\u7684\u5e73\u5747\u503c<\/pre>\r\n<h3>\u7b2c\u4e8c\u884c <\/h3>\r\n<pre>Tasks: 95 total, 1 running, 94 sleeping, 0 stopped, 0 zombie <br \/>95 total\uff1a\u8fdb\u7a0b\u603b\u6570 <br \/>1 running\uff1a\u6b63\u5728\u8fd0\u884c\u7684\u8fdb\u7a0b\u6570 <br \/>94 sleeping\uff1a\u7761\u7720\u7684\u8fdb\u7a0b\u6570 <br \/>0 stopped\uff1a\u505c\u6b62\u7684\u8fdb\u7a0b\u6570 <br \/>0 zombie\uff1a\u50f5\u5c38\u8fdb\u7a0b\u6570<\/pre>\r\n<h3>\u7b2c\u4e09\u884c <\/h3>\r\n<pre>%Cpu(s): 0.3 us, 0.3 sy, 0.0 ni, 99.3 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st 0.3 <br \/>us\uff1a\u7528\u6237\u7a7a\u95f4\u5360\u7528CPU\u4f7f\u7528\u7387<br \/>0.3 sy\uff1a\u5185\u6838\u7a7a\u95f4\u5360\u7528CPU\u767e\u5206\u6bd4 <br \/>0.0 ni\uff1a\u7528\u6237\u8fdb\u7a0b\u7a7a\u95f4\u5185\u6539\u53d8\u8fc7\u4f18\u5148\u7ea7\u7684\u8fdb\u7a0b\u5360\u7528CPU\u767e\u5206\u6bd4 <br \/>99.3 id\uff1a\u7a7a\u95f2CPU\u767e\u5206\u6bd4 <br \/>0.0 wa\uff1a\u7b49\u5f85\u8f93\u5165\u8f93\u51fa\u7684CPU\u65f6\u95f4\u767e\u5206\u6bd4 <br \/>0.0 hi\uff1a\u5904\u7406\u786c\u4ef6\u4e2d\u65ad\u7684CPU\u65f6\u95f4 <br \/>0.0 si\uff1a\u5904\u7406\u8f6f\u4ef6\u4e2d\u65ad\u7684CPU\u65f6\u95f4 <br \/>0.0 st\uff1a\u8fd9\u4e2a\u865a\u62df\u673a\u88abhypervisor\u5077\u53bb\u7684CPU\u65f6\u95f4\uff08\u8bd1\u6ce8\uff1a\u5982\u679c\u5f53\u524d\u5904\u4e8e\u4e00\u4e2ahypervisor\u4e0b\u7684vm\uff0c<br \/>\u5b9e\u9645\u4e0ahypervisor\u4e5f\u662f\u8981\u6d88\u8017\u4e00\u90e8\u5206CPU\u5904\u7406\u65f6\u95f4\u7684)<\/pre>\r\n<h3>\u7b2c\u56db\u884c <\/h3>\r\n<pre>KiB Mem : 995684 total, 256856 free, 119032 used, 619796 buff\/cache <br \/>995684total\uff1a\u7269\u7406\u5185\u5b58\u603b\u91cf <br \/>256856 free\uff1a\u7a7a\u95f2\u5185\u5b58\u603b\u91cf <br \/>119032 used\uff1a\u4f7f\u7528\u7684\u7269\u7406\u5185\u5b58\u603b\u91cf <br \/>619796 buff\/cache\uff1a\u7528\u4f5c\u5185\u6838\u7f13\u5b58\u7684\u5185\u5b58\u91cf<\/pre>\r\n<h3>\u7b2c\u4e94\u884c <\/h3>\r\n<pre>KiB Swap: 2097148 total, 2096884 free, 264 used. 721072 avail Mem <br \/>2097148 total\uff1a\u4ea4\u6362\u533a\u603b\u91cf <br \/>2096884 free\uff1a\u7a7a\u95f2\u4ea4\u6362\u533a\u603b\u91cf <br \/>264 used\uff1a\u4f7f\u7528\u7684\u4ea4\u6362\u533a\u603b\u91cf <br \/>721072 avail Mem\uff1a\u7f13\u51b2\u7684\u4ea4\u6362\u533a\u603b\u91cf<\/pre>\r\n<h2>top\u8fdb\u7a0b\u4fe1\u606f\u533a<\/h2>\r\n<pre>PID\u3001USER\u3001PR\u3001NI\u3001VIRT\u3001RES\u3001SHR\u3001S\u3001%CPU\u3001%MEM\u3001TIME+\u3001COMMAND <br \/>PID\uff1a\u8fdb\u7a0bid <br \/>USER\uff1a\u8fdb\u7a0b\u6240\u6709\u8005 <br \/>PR\uff1a\u8fdb\u7a0b\u4f18\u5148\u7ea7 <br \/>NI\uff1anice\u503c\u3002\u8d1f\u503c\u8868\u793a\u9ad8\u4f18\u5148\u7ea7\uff0c\u6b63\u503c\u8868\u793a\u4f4e\u4f18\u5148\u7ea7 <br \/>VIRT\uff1a\u8fdb\u7a0b\u4f7f\u7528\u7684\u865a\u62df\u5185\u5b58\u603b\u91cf\uff0c\u5355\u4f4dkb\u3002VIRT=SWAP+RES <br \/>RES\uff1a\u8fdb\u7a0b\u4f7f\u7528\u7684\u3001\u672a\u88ab\u6362\u51fa\u7684\u7269\u7406\u5185\u5b58\u5927\u5c0f\uff0c\u5355\u4f4dkb\u3002RES=CODE+DATA <br \/>SHR\uff1a\u5171\u4eab\u5185\u5b58\u5927\u5c0f\uff0c\u5355\u4f4dkb <br \/>S\uff1a\u8fdb\u7a0b\u72b6\u6001\u3002 <br \/>D\uff1a\u4e0d\u53ef\u4e2d\u65ad\u7684\u7761\u7720\u72b6\u6001 <br \/>R\uff1a\u8fd0\u884c <br \/>S\uff1a\u7761\u7720 <br \/>T\uff1a\u8ddf\u8e2a\/\u505c\u6b62 <br \/>Z\uff1a\u50f5\u5c38\u8fdb\u7a0b <br \/>%CPU\uff1a\u4e0a\u6b21\u66f4\u65b0\u5230\u73b0\u5728\u7684CPU\u65f6\u95f4\u5360\u7528\u767e\u5206\u6bd4 <br \/>%MEM\uff1a\u8fdb\u7a0b\u4f7f\u7528\u7684\u7269\u7406\u5185\u5b58\u767e\u5206\u6bd4 <br \/>TIME+\uff1a\u8fdb\u7a0b\u4f7f\u7528\u7684CPU\u65f6\u95f4\u603b\u8ba1\uff0c\u5355\u4f4d1\/100\u79d2 <br \/>COMMAND\uff1a\u8fdb\u7a0b\u540d\u79f0\uff08\u547d\u4ee4\u540d\/\u547d\u4ee4\u884c\uff09<\/pre>\r\n<h1>6.\u5173\u95ed\u8fdb\u7a0b<\/h1>\r\n<p>kill\u3001pkill\u3001killall\uff1a\u4f7f\u7528kill\u3001pkill\u3001killall\u547d\u4ee4\u53d1\u9001\u4fe1\u53f7\u4e0e\u8fdb\u7a0b\u901a\u4fe1\u5b9a\u4e49\u5b88\u62a4\u8fdb\u7a0b\u7684\u89d2\u8272\u7ed3\u675f\u7528\u6237\u4f1a\u8bdd\u548c\u8fdb\u7a0b<br \/>kill\uff1a\u901a\u8fc7pid\u548c\u4fe1\u53f7\u6740\u6389\u8fdb\u7a0b<br \/>pkill\uff1a\u901a\u8fc7\u8fdb\u7a0b\u540d\u5b57,\u5bb9\u6613\u8bef\u6740<br \/>killall\uff1a\u901a\u8fc7\u8fdb\u7a0b\u540d\u79f0(\u5b8c\u6574\u540d\u79f0)<\/p>\r\n<h2>kill\uff1a\u5217\u51fa\u6240\u6709\u4fe1\u53f7\u540d\u79f0<\/h2>\r\n<pre>[root@dmxsp ~]# kill -l<br \/>1) SIGHUP\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a02) SIGINT\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a03) SIGQUIT\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a04) SIGILL\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a05) SIGTRAP<br \/>6) SIGABRT\u00a0 \u00a0 \u00a0 \u00a0 \u00a07) SIGBUS\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a08) SIGFPE\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a09) SIGKILL\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 10) SIGUSR1<br \/>11) SIGSEGV\u00a0 \u00a0 \u00a0 \u00a012) SIGUSR2\u00a0 \u00a0 \u00a0 13) SIGPIPE\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a014) SIGALRM\u00a0 \u00a0 \u00a0 \u00a015) SIGTERM<br \/>16) SIGSTKFLT\u00a0 \u00a0 17) SIGCHLD\u00a0 \u00a0 \u00a0 18) SIGCONT\u00a0 \u00a0 \u00a0 \u00a0 19) SIGSTOP\u00a0 \u00a0 \u00a0 \u00a0 20) SIGTSTP<br \/>21) SIGTTIN\u00a0 \u00a0 \u00a0 \u00a0 22) SIGTTOU\u00a0 \u00a0 \u00a0 \u00a0 23) SIGURG\u00a0 \u00a0 \u00a0 \u00a0 \u00a024) SIGXCPU\u00a0 \u00a0 \u00a0 \u00a025) SIGXFSZ<br \/>26) SIGVTALRM\u00a0 27) SIGPROF\u00a0 \u00a0 \u00a0 \u00a028) SIGWINCH\u00a0 \u00a0 \u00a029) SIGIO\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a030) SIGPWR<br \/>31) SIGSYS\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 34) SIGRTMIN\u00a0 \u00a0 35) SIGRTMIN+1 36) SIGRTMIN+2\u00a0 \u00a037) SIGRTMIN+3<br \/>38) SIGRTMIN+4 39) SIGRTMIN+5 40) SIGRTMIN+6 41) SIGRTMIN+7 42) SIGRTMIN+8<br \/>43) SIGRTMIN+9 44) SIGRTMIN+10 45) SIGRTMIN+11 46) SIGRTMIN+12 47) SIGRTMIN+13<br \/>48) SIGRTMIN+14 49) SIGRTMIN+15 50) SIGRTMAX-14 51) SIGRTMAX-13 52) SIGRTMAX-12<br \/>53) SIGRTMAX-11 54) SIGRTMAX-10 55) SIGRTMAX-9 56) SIGRTMAX-8 57) SIGRTMAX-7<br \/>58) SIGRTMAX-6 59) SIGRTMAX-5 60) SIGRTMAX-4 61) SIGRTMAX-3 62) SIGRTMAX-2<br \/>63) SIGRTMAX-1 64) SIGRTMAX<\/pre>\r\n<h2>kill\u5e38\u7528\u7684\u4fe1\u53f7<\/h2>\r\n<p>1\u00a0 \u00a0 \u00a0 \u00a0SIGHUP\uff1a\u8fdb\u7a0b\u91cd\u65b0\u8bfb\u53d6\u914d\u7f6e\u6587\u4ef6 \u5f88\u591a\u7a0b\u5e8f\u5b9e\u73b0reload\u529f\u80fd<br \/>9\u00a0 \u00a0 \u00a0 \u00a0SIGKILL\uff1a\u5f3a\u5236\u7ed3\u675f\u8fdb\u7a0b ,\u614e\u7528<br \/>15\u00a0 \u00a0 \u00a0SIGTERM\uff1a\u505c\u6b62,kill \u9ed8\u8ba4\u4f7f\u7528\u7684\u4fe1\u53f7<\/p>\r\n<h2>kill\u547d\u4ee4\u4f7f\u7528<\/h2>\r\n<pre>kill PID\uff08\u8fdb\u7a0b\u7684PID ps aux | grep vsftpd\uff09<br \/>-u\uff1a\u6307\u5b9a\u7528\u6237<\/pre>\r\n<h3>1.\u7ed9 vsftpd \u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7 1,15<\/h3>\r\n<pre>[root@dmxsp ~]# yum -y install vsftpd<br \/>[root@dmxsp ~]# systemctl start vsftpd<br \/>[root@dmxsp ~]# ps aux | grep vsftpd<\/pre>\r\n<h3>2.\u53d1\u9001\u91cd\u542f\u4fe1\u53f7\uff0c\u4f8b\u5982 vsftpd \u7684\u914d\u7f6e\u6587\u4ef6\u53d1\u751f\u6539\u53d8\uff0c\u5e0c\u671b\u91cd\u65b0\u52a0\u8f7d<\/h3>\r\n<pre>[root@dmxsp ~]# kill -1 5618<\/pre>\r\n<h3>3.\u53d1\u9001\u505c\u6b62\u4fe1\u53f7\uff0cvsftpd \u670d\u52a1\u6709\u505c\u6b62\u7684\u811a\u672c systemctl stop vsftpd<\/h3>\r\n<pre>[root@dmxsp ~]# kill 5618<\/pre>\r\n<h3>4.\u53d1\u9001\u5f3a\u5236\u505c\u6b62\u4fe1\u53f7\uff0c\u5f53\u65e0\u6cd5\u505c\u6b62\u670d\u52a1\u65f6\uff0c\u53ef\u5f3a\u5236\u7ec8\u6b62\u4fe1\u53f7 <\/h3>\r\n<pre>[root@dmxsp ~]# kill -9 5618<\/pre>\r\n<h2>pkill\u547d\u4ee4\u4f7f\u7528<\/h2>\r\n<p>pkill nginx\uff08\u8fdb\u7a0b\u7684\u540d\u5b57\uff09\u662fps\u547d\u4ee4\u548ckill\u547d\u4ee4\u7684\u7ed3\u5408,\u7528\u6765\u6740\u6b7b\u6307\u5b9a\u8fdb\u7a0b<\/p>\r\n<pre>-t\uff1a\u4e2d\u6b62\u6307\u5b9a\u7ec8\u7aef\u4e0b\u7684\u6240\u6709\u7a0b\u5e8f<br \/>-u\uff1a\u6307\u5b9a\u7528\u6237\u7684\u7a0b\u5e8f<br \/>-v\uff1a\u4e0e\u6761\u4ef6\u4e0d\u7b26\u5408\u7684\u7a0b\u5e8f<br \/>-x\uff1a\u4e0e\u6761\u4ef6\u00b7\u7b26\u5408\u7684\u7a0b\u5e8f<br \/>-f\uff1a\u663e\u793a\u5b8c\u6574\u7a0b\u5e8f<br \/>-p\uff1a\u5217\u51fa\u7236\u8fdb\u7a0b\u4e3a\u7528\u6237\u6307\u5b9a\u8fdb\u7a0b\u7684\u8fdb\u7a0b\u4fe1\u606f<\/pre>\r\n<pre>[root@dmxsp ~]# pkill nginx<\/pre>\r\n<h2>killall\u547d\u4ee4\u4f7f\u7528<\/h2>\r\n<p>killall\u53d1\u9001\u4e00\u6761\u4fe1\u53f7\u7ed9\u6240\u6709\u8fd0\u884c\u4efb\u610f\u6307\u5b9a\u547d\u4ee4\u7684\u8fdb\u7a0b. \u5982\u679c\u6ca1\u6709\u6307\u5b9a\u4fe1\u53f7\u540d, \u5219\u53d1\u9001 SIGTERM<\/p>\r\n<pre>[root@dmxsp ~]# killall nginx<\/pre>\r\n<h1>7.\u540e\u53f0\u8fdb\u7a0b\u7ba1\u7406<\/h1>\r\n<p>\u653e\u5165\u540e\u53f0\uff0c\u8fdb\u5165\u540e\u53f0<\/p>\r\n<h2>1.jobs\u663e\u793a\u540e\u53f0\u8fd0\u884c\u7684\u7a0b\u5e8f<\/h2>\r\n<pre><br \/>-l\uff1a\u663e\u793a\u8fdb\u7a0b\u53f7<br \/>-p\uff1a\u4ec5\u4efb\u52a1\u5bf9\u5e94\u7684\u663e\u793a\u8fdb\u7a0b\u53f7<br \/>-r\uff1a\u4ec5\u8f93\u51fa\u8fd0\u884c\u72b6\u6001\uff08running\uff09\u7684\u4efb\u52a1<br \/>-s\uff1a\u4ec5\u8f93\u51fa\u505c\u6b62\u72b6\u6001\uff08stoped\uff09\u7684\u4efb\u52a1<\/pre>\r\n<p>fg\uff1a\u5c06\u7a0b\u5e8f\u8f6c\u5165\u524d\u53f0\u6267\u884c<br \/>bg\uff1a\u5c06\u7a0b\u5e8f\u653e\u5728\u540e\u53f0\u6267\u884c<\/p>\r\n<h3>vim\u5199\u6587\u4ef6<\/h3>\r\n<pre>[root@dmxsp ~]# vim abc.txt<\/pre>\r\n<h3>\u8fdb\u5165vim\uff0c\u6309ctrl+z\uff0c\u8fdb\u5165\u540e\u53f0\u6302\u8d77 (\u6682\u505c)\uff0c\u67e5\u770b\u540e\u53f0\u6302\u8d77\u7684\u7a0b\u5e8f<\/h3>\r\n<pre>[root@dmxsp ~]# ps aux | grep vim<br \/>[root@dmxsp ~]# jobs <br \/>[1]+ Stopped vim abc.txt<\/pre>\r\n<h3>\u5982\u4f55\u6062\u590d<\/h3>\r\n<pre>[root@dmxsp ~]# fg<\/pre>\r\n<h2>2.screen<\/h2>\r\n<p>Linux screen\u547d\u4ee4\u7528\u4e8e\u591a\u91cd\u89c6\u7a97\u7ba1\u7406\u7a0b\u5e8f\u3002<br \/>screen\u4e3a\u591a\u91cd\u89c6\u7a97\u7ba1\u7406\u7a0b\u5e8f\u3002\u6b64\u5904\u6240\u8c13\u7684\u89c6\u7a97\uff0c\u662f\u6307\u4e00\u4e2a\u5168\u5c4f\u5e55\u7684\u6587\u5b57\u6a21\u5f0f\u753b\u9762\u3002\u901a\u5e38\u53ea\u6709\u5728\u4f7f\u7528telnet\u767b\u5165\u4e3b\u673a\u6216\u662f\u4f7f\u7528\u8001\u5f0f\u7684\u7ec8\u7aef\u673a\u65f6\uff0c\u624d\u6709\u53ef\u80fd\u7528\u5230screen\u7a0b\u5e8f<\/p>\r\n<h3><strong>screen<\/strong><\/h3>\r\n<pre>-A \uff1a\u5c06\u6240\u6709\u7684\u89c6\u7a97\u90fd\u8c03\u6574\u4e3a\u76ee\u524d\u7ec8\u7aef\u673a\u7684\u5927\u5c0f<br \/>-ls\uff08\u2013list\uff09\uff1a\u663e\u793a\u76ee\u524d\u6240\u6709\u7684screen\u4f5c\u4e1a<br \/>-s\uff1a\u6307\u5b9a\u5efa\u7acb\u65b0\u89c6\u7a97\u65f6\uff0c\u6240\u8981\u6267\u884c\u7684shell<br \/>-S\uff1a\u6307\u5b9ascreen\u7a97\u53e3\u7684\u540d\u79f0<br \/>-v:\u663e\u793a\u7248\u672c\u4fe1\u606f<br \/>-wipe:\u68c0\u67e5\u76ee\u524d\u6240\u6709\u7684screen\u7a97\u53e3\u540d\u79f0\uff0c\u5e76\u5220\u9664\u5df2\u7ecf\u65e0\u6cd5\u4f7f\u7528\u7684screen\u7a97\u53e3\u540d\u79f0<br \/>-d [pid.tty.host]\uff1a\u65ad\u5f00screen\u8fdb\u7a0b(\u4f7f\u7528\u8be5\u547d\u4ee4\u65f6\uff0cscreen\u7684\u72b6\u6001\u4e00\u5b9a\u8981\u662fAttached\uff0c\u4e5f\u5c31\u662f\u8bf4\u6709\u7528\u6237\u8fde\u5728screen\u91cc)\u3002<br \/>\u4e00\u822c\u8fdb\u7a0b\u7684\u540d\u5b57\u662f\u4ee5pid.tty.host\u8fd9\u79cd\u5f62\u5f0f\u8868\u793a(\u7528screen -list\u547d\u4ee4\u53ef\u4ee5\u770b\u51fa\u72b6\u6001)<br \/>-D [pid.tty.host]\uff1a\u4e0e-d\u547d\u4ee4\u5b9e\u73b0\u4e00\u6837\u7684\u529f\u80fd\uff0c\u533a\u522b\u5c31\u662f\u5982\u679c\u6267\u884c\u6210\u529f\uff0c\u4f1a\u8e22\u6389\u539f\u6765\u5728screen\u91cc\u7684\u7528\u6237\u5e76\u8ba9\u4ed6logout\u3002<br \/>-r [pid.tty.host]\uff1a\u6062\u590d\u79bb\u7ebf\u7684screen\u8fdb\u7a0b\uff0c\u5982\u679c\u6709\u591a\u4e2a\u65ad\u5f00\u7684\u8fdb\u7a0b\uff0c\u9700\u8981\u6307\u5b9a[pid.tty.host]<br \/>-m\uff1a\u5373\u4f7f\u76ee\u524d\u5df2\u5728\u4f5c\u4e1a\u4e2d\u7684screen\u4f5c\u4e1a\uff0c\u4ecd\u5f3a\u5236\u5efa\u7acb\u65b0\u7684screen\u4f5c\u4e1a\u3002<br \/>-p number or name\uff1a\u9884\u5148\u9009\u62e9\u4e00\u4e2a\u7a97\u53e3<\/pre>\r\n<h3>Screen\u547d\u4ee4\u7684\u5e38\u89c4\u7528\u6cd5<\/h3>\r\n<pre>screen -d -r\uff1a\u8fde\u63a5\u4e00\u4e2ascreen\u8fdb\u7a0b\uff0c\u5982\u679c\u8be5\u8fdb\u7a0b\u662fattached\uff0c\u5c31\u5148\u8e22\u6389\u8fdc\u7aef\u7528\u6237\u518d\u8fde\u63a5\u3002<br \/>screen -D -r\uff1a\u8fde\u63a5\u4e00\u4e2ascreen\u8fdb\u7a0b\uff0c\u5982\u679c\u8be5\u8fdb\u7a0b\u662fattached\uff0c\u5c31\u5148\u8e22\u6389\u8fdc\u7aef\u7528\u6237\u5e76\u8ba9\u4ed6logout\u518d\u8fde\u63a5<br \/>screen -ls\u6216\u8005-list\uff1a\u663e\u793a\u5b58\u5728\u7684screen\u8fdb\u7a0b\uff0c\u5e38\u7528\u547d\u4ee4<br \/>screen -m\uff1a\u5982\u679c\u5728\u4e00\u4e2aScreen\u8fdb\u7a0b\u91cc\uff0c\u7528\u5feb\u6377\u952ecrtl+a c\u6216\u8005\u76f4\u63a5\u6253screen\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7a97\u53e3,screen -m\u53ef\u4ee5\u65b0\u5efa\u4e00\u4e2ascreen\u8fdb\u7a0b\u3002<br \/>screen -dm\uff1a\u65b0\u5efa\u4e00\u4e2ascreen\uff0c\u5e76\u9ed8\u8ba4\u662fdetached\u6a21\u5f0f\uff0c\u4e5f\u5c31\u662f\u5efa\u597d\u4e4b\u540e\u4e0d\u4f1a\u8fde\u4e0a\u53bb\u3002<br \/>screen -p number or name\uff1a\u9884\u5148\u9009\u62e9\u4e00\u4e2a\u7a97\u53e3\u3002<\/pre>\r\n<h2><strong>screen\u4f7f\u7528<\/strong><\/h2>\r\n<h3>1.\u5b89\u88c5<\/h3>\r\n<pre>[root@dmxsp ~]# yum install screen -y<\/pre>\r\n<h3>2.\u5f00\u542f\u4e00\u4e2ascreen\u7a97\u53e3,\u6307\u5b9a\u540d\u79f0<\/h3>\r\n<pre>[root@dmxsp ~]# screen -S wget_mysql<\/pre>\r\n<h3>3.\u5728screen\u7a97\u53e3\u4e2d\u6267\u884c\u4efb\u52a1\u5373\u53ef<\/h3>\r\n<h3>4.\u5e73\u6ed1\u7684\u9000\u51fascreen,\u4f46\u4e0d\u4f1a\u7ec8\u6b62screen\u4e2d\u7684\u4efb\u52a1\u3002\u6ce8\u610f: \u5982\u679c\u4f7f\u7528exit\u624d\u7b97\u771f\u7684\u5173\u95edscreen\u7a97\u53e3ctrl+a +d<\/h3>\r\n<h3>5.\u67e5\u770b\u5f53\u524d\u6b63\u5728\u8fd0\u884c\u7684screen\u6709\u54ea\u4e9b<\/h3>\r\n<pre>[root@dmxsp ~]# screen -list<br \/>There is a screen on:<br \/>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a022058.wget_mysql (Detached)<br \/>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a01 Socket in \/var\/run\/screen\/S-root.<\/pre>\r\n<h3>6.\u8fdb\u5165\u6b63\u5728\u8fd0\u884c\u7684screen<\/h3>\r\n<pre>[root@dmxsp ~]# screen -r wget_mysql<br \/>[root@dmxsp ~]# screen -r 22058<\/pre>\r\n<h1>8.\u5e73\u5747\u8d1f\u8f7d<\/h1>\r\n<p>\u6bcf\u6b21\u53d1\u73b0\u7cfb\u7edf\u53d8\u6162\u65f6\uff0c\u6211\u901a\u5e38\u505a\u7684\u7b2c\u4e00\u4ef6\u4e8b\uff0c\u5c31\u662f\u6267\u884c top \u6216\u8005 uptime \u547d\u4ee4\uff0c\u6765\u4e86\u89e3\u7cfb\u7edf\u7684\u8d1f\u8f7d\u60c5\u51b5\u3002\u6bd4\u5982\u50cf\u4e0b\u9762\u8fd9\u6837\uff0c\u6211\u5728\u547d\u4ee4\u884c\u91cc\u8f93\u5165\u4e86 uptime \u547d\u4ee4\uff0c\u7cfb\u7edf\u4e5f\u968f\u5373\u7ed9\u51fa\u4e86\u7ed3\u679c<\/p>\r\n<pre>[root@dmxsp ~]# uptime <br \/>15:01:42 up 1 day, 16:19, 1 user, load average: 0.00, 0.01, 0.05<\/pre>\r\n<p>\u5df2\u7ecf\u6bd4\u8f83\u719f\u6089\u524d\u9762\u51e0\u5217\uff0c\u5b83\u4eec\u5206\u522b\u662f\u5f53\u524d\u65f6\u95f4\u3001\u7cfb\u7edf\u8fd0\u884c\u65f6\u95f4\u4ee5\u53ca\u6b63\u5728\u767b\u5f55\u7528\u6237\u6570<br \/>\u800c\u6700\u540e\u4e09\u4e2a\u6570\u5b57\u5462\uff0c\u4f9d\u6b21\u5219\u662f\u8fc7\u53bb 1 \u5206\u949f\u30015 \u5206\u949f\u300115 \u5206\u949f\u7684\u5e73\u5747\u8d1f\u8f7d<\/p>\r\n<h2><strong>\u4ec0\u4e48\u662f\u5e73\u5747\u8d1f\u8f7d<\/strong><\/h2>\r\n<p>\u5e73\u5747\u8d1f\u8f7d\u4e0d\u5c31\u662f\u5355\u4f4d\u65f6\u95f4\u5185\u7684<i> CPU <\/i>\u4f7f\u7528\u7387\u5417\uff1f\u4e0a\u9762\u7684<i> 0.70<\/i>\uff0c\u5c31\u4ee3\u8868<i> CPU <\/i>\u4f7f\u7528\u7387\u662f<i> 70%<\/i>\u3002\u5176\u5b9e\u4e0a\u5e76<i>&#8230;.. <br \/><\/i>\u90a3\u5230\u5e95\u5982\u4f55\u7406\u89e3\u5e73\u5747\u8d1f\u8f7d<i>: <\/i>\u5e73\u5747\u8d1f\u8f7d\u662f\u6307\u5355\u4f4d\u65f6\u95f4\u5185\uff0c\u7cfb\u7edf\u5904\u4e8e\u53ef\u8fd0\u884c\u72b6\u6001\u548c \u4e0d\u53ef\u4e2d\u65ad\u72b6\u6001\u7684\u5e73\u5747\u8fdb\u7a0b\u6570\uff0c\u4e5f\u5c31\u662f\u5e73\u5747\u6d3b\u8dc3\u8fdb\u7a0b\u6570\uff0c<br \/>\u00a0<i>PS: <\/i>\u5e73\u5747\u8d1f\u8f7d\u4e0e<i> CPU <\/i>\u4f7f\u7528\u7387\u5e76\u6ca1\u6709\u76f4\u63a5\u5173\u7cfb<\/p>\r\n<h2><b>\u53ef\u8fd0\u884c\u72b6\u6001\u548c\u4e0d\u53ef\u4e2d\u65ad\u72b6\u6001\u662f\u4ec0\u4e48<\/b><\/h2>\r\n<p>1.\u53ef\u8fd0\u884c\u72b6\u6001\u8fdb\u7a0b\uff0c\u662f\u6307\u6b63\u5728\u4f7f\u7528 CPU \u6216\u8005\u6b63\u5728\u7b49\u5f85 CPU \u7684\u8fdb\u7a0b\uff0c\u4e5f\u5c31\u662f\u6211\u4eecps \u547d\u4ee4\u770b\u5230\u5904\u4e8e R \u72b6\u6001\u7684\u8fdb\u7a0b<br \/>2.\u4e0d\u53ef\u4e2d\u65ad\u8fdb\u7a0b\uff0c(\u4f60\u505a\u4ec0\u4e48\u4e8b\u60c5\u7684\u65f6\u5019\u662f\u4e0d\u80fd\u6253\u65ad\u7684?) \u7cfb\u7edf\u4e2d\u6700\u5e38\u89c1\u7684\u662f\u7b49\u5f85\u786c\u4ef6\u8bbe\u5907\u7684 I\/O \u54cd\u5e94\uff0c\u4e5f\u5c31\u662f\u6211\u4eec ps \u547d\u4ee4\u4e2d\u770b\u5230\u7684 D \u72b6\u6001\uff08\u4e5f\u79f0\u4e3a DiskSleep\uff09\u7684\u8fdb\u7a0b<br \/>\u4f8b\u5982: 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\/><\/i>\u800c\u5728\u8fc7\u53bb<i> 5 <\/i>\u5206\u949f\u5185\uff0c\u6709<i> 345% <\/i>\u7684\u8d85\u8f7d<i> (6.90\/2=345%) <br \/><\/i>\u800c\u5728\u8fc7\u53bb<i>15 <\/i>\u5206\u949f\u5185\uff0c\u6709<i> 649% <\/i>\u7684\u8d85\u8f7d\uff0c<i>(12.98\/2=649%) <br \/><\/i>\u4f46\u4ece\u6574\u4f53\u8d8b\u52bf\u6765\u770b\uff0c\u7cfb\u7edf\u7684\u8d1f\u8f7d\u662f\u5728\u9010\u6b65\u7684\u964d\u4f4e\u3002<\/p>\r\n<h2><b>\u90a3\u4e48\u5728\u5b9e\u9645\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u5e73\u5747\u8d1f\u8f7d\u591a\u9ad8\u65f6\uff0c\u9700\u8981\u6211\u4eec\u91cd\u70b9\u5173\u6ce8\u5462\uff1f<\/b><\/h2>\r\n<p>\u5f53\u5e73\u5747\u8d1f\u8f7d\u9ad8\u4e8e CPU \u6570\u91cf 70% \u7684\u65f6\u5019\uff0c\u4f60\u5c31\u5e94\u8be5\u5206\u6790\u6392\u67e5\u8d1f\u8f7d\u9ad8\u7684\u95ee\u9898\u4e86\u3002\u4e00\u65e6\u8d1f\u8f7d\u8fc7\u9ad8\uff0c\u5c31\u53ef\u80fd\u5bfc\u81f4\u8fdb\u7a0b\u54cd\u5e94\u53d8\u6162\uff0c\u8fdb\u800c\u5f71\u54cd\u670d\u52a1\u7684\u6b63\u5e38\u529f\u80fd\u3002\u4f46 70% 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