{"id":378,"date":"2022-01-11T20:25:46","date_gmt":"2022-01-11T12:25:46","guid":{"rendered":"https:\/\/www.buyao007.icu\/?p=378"},"modified":"2022-01-12T16:21:12","modified_gmt":"2022-01-12T08:21:12","slug":"17-%e8%bf%9b%e7%a8%8b%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.buyao007.icu\/?p=378","title":{"rendered":"17.Linux\u7684\u8fdb\u7a0b\u7ba1\u7406"},"content":{"rendered":"\n

\u5b59\u5bcc\u9633\uff0c \u6c5f\u6e56\u4eba\u79f0\u6ca1\u4eba\u79f0\u3002\u591a\u5e74\u4e92\u8054\u7f51\u8fd0\u7ef4\u5de5\u4f5c\u7ecf\u9a8c\uff0c\u66fe\u8d1f\u8d23\u8fc7\u5b59\u5e03\u65af\u5927\u89c4\u6a21\u96c6\u7fa4\u67b6\u6784\u81ea\u52a8\u5316\u8fd0\u7ef4\u7ba1\u7406\u5de5\u4f5c\u3002\u64c5\u957fWeb\u96c6\u7fa4\u67b6\u6784\u4e0e\u81ea\u52a8\u5316\u8fd0\u7ef4\uff0c\u66fe\u8d1f\u8d23\u56fd\u5185\u67d0\u5927\u578b\u535a\u5ba2\u7f51\u7ad9\u8fd0\u7ef4\u5de5\u4f5c\u3002<\/p>\n\n\n\n

1.\u4ec0\u4e48\u662f\u8fdb\u7a0b<\/em><\/strong>
\u6bd4\u5982: \u5f00\u53d1\u5199\u7684\u4ee3\u7801\u6211\u4eec\u79f0\u4e3a\u7a0b\u5e8f\uff0c\u90a3\u4e48\u5c06\u5f00\u53d1\u7684\u4ee3\u7801\u8fd0\u884c\u8d77\u6765\u3002\u6211\u4eec\u79f0\u4e3a\u8fdb\u7a0b\u3002
\u603b\u7ed3\u4e00\u53e5\u8bdd\u5c31\u662f: \u5f53\u6211\u4eec\u8fd0\u884c\u4e00\u4e2a\u7a0b\u5e8f\uff0c\u90a3\u4e48\u6211\u4eec\u5c06\u8fd0\u884c\u7684\u7a0b\u5e8f\u53eb\u8fdb\u7a0b\u3002
PS1: \u5f53\u7a0b\u5e8f\u8fd0\u884c\u4e3a\u8fdb\u7a0b\u540e\uff0c\u7cfb\u7edf\u4f1a\u4e3a\u8be5\u8fdb\u7a0b\u5206\u914d\u5185\u5b58\uff0c\u4ee5\u53ca\u8fdb\u7a0b\u8fd0\u884c\u7684\u8eab\u4efd\u548c\u6743\u9650\u3002
PS2: \u5728\u8fdb\u7a0b\u8fd0\u884c\u7684\u8fc7\u7a0b\u4e2d\uff0c\u7cfb\u7edf\u4f1a\u6709\u5404\u79cd\u6307\u6807\u6765\u8868\u793a\u5f53\u524d\u8fd0\u884c\u7684\u72b6\u6001\u3002<\/em><\/p>\n\n\n\n

2.\u7a0b\u5e8f\u548c\u8fdb\u7a0b\u7684\u533a\u522b<\/em><\/strong>
1.\u7a0b\u5e8f\u662f\u6570\u636e\u548c\u6307\u4ee4\u7684\u96c6\u5408\uff0c\u662f\u4e00\u4e2a\u9759\u6001\u7684\u6982\u5ff5\u3002\u6bd4\u5982\/bin\/ls\u3001\/bin\/cp\u7b49\u4e8c\u8fdb\u5236\u6587\u4ef6\u3002\u540c\u65f6\u7a0b\u5e8f\u53ef\u4ee5\u957f\u671f\u5b58\u5728\u7cfb\u7edf\u4e2d\u3002
2.\u8fdb\u7a0b\u662f\u7a0b\u5e8f\u8fd0\u884c\u7684\u8fc7\u7a0b\uff0c\u662f\u4e00\u4e2a\u52a8\u6001\u7684\u6982\u5ff5\u3002\u8fdb\u7a0b\u662f\u5b58\u5728\u751f\u547d\u5468\u671f\u7684\u6982\u5ff5\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u8fdb\u7a0b\u4f1a\u968f\u7740\u7a0b\u5e8f\u7684\u7ec8\u6b62\u800c\u9500\u6bc1\uff0c\u4e0d\u4f1a\u6c38\u4e45\u5b58\u5728\u7cfb\u7edf\u4e2d\u3002<\/em><\/p>\n\n\n\n

3.\u8fdb\u7a0b\u7684\u751f\u547d\u5468\u671f<\/em><\/strong>
\u751f\u547d\u5468\u671f\u5c31\u662f\u6307\u4e00\u4e2a\u5bf9\u8c61\u7684\u751f\u8001\u75c5\u6b7b\u3002\u7528\u5904\u5f88\u5e7f\u3002<\/em><\/p>\n\n\n\n

\u5f53\u7236\u8fdb\u7a0b\u63a5\u6536\u5230\u4efb\u52a1\u8c03\u5ea6\u65f6\uff0c\u4f1a\u901a\u8fc7fock\u6d3e\u751f\u5b50\u8fdb\u7a0b\u6765\u5904\u7406\uff0c\u90a3\u4e48\u5b50\u8fdb\u7a0b\u4f1a\u7ee7\u627f\u7236\u8fdb\u7a0b\u5c5e\u6027\u3002
1.\u5b50\u8fdb\u7a0b\u5728\u5904\u7406\u4efb\u52a1\u4ee3\u7801\u65f6\uff0c\u7236\u8fdb\u7a0b\u4f1a\u8fdb\u5165\u7b49\u5f85\u72b6\u6001\u4e2d...
2.\u5b50\u8fdb\u7a0b\u5728\u5904\u7406\u4efb\u52a1\u4ee3\u7801\u540e\uff0c\u4f1a\u6267\u884c\u9000\u51fa\uff0c\u7136\u540e\u5524\u9192\u7236\u8fdb\u7a0b\u6765\u56de\u6536\u5b50\u8fdb\u7a0b\u7684\u8d44\u6e90\u3002
3.\u5982\u679c\u5b50\u8fdb\u7a0b\u5728\u5904\u7406\u4efb\u52a1\u8fc7\u7a0b\u4e2d\uff0c\u7236\u8fdb\u7a0b\u9000\u51fa\u4e86\uff0c\u5b50\u8fdb\u7a0b\u6ca1\u6709\u9000\u51fa\uff0c\u90a3\u4e48\u8fd9\u4e9b\u5b50\u8fdb\u7a0b\u5c31\u6ca1\u6709\u7236\u8fdb\u7a0b\u6765\u7ba1\u7406\u4e86\uff0c\u5c31\u53d8\u6210\u50f5\u5c38\u8fdb\u7a0b\u3002
PS: \u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u7236\u8fdb\u7a0b\u7684PPID\uff0c\u5b50\u8fdb\u7a0b\u5219\u53ebPID\u3002<\/em><\/p>\n\n\n\n

\u4f8b: \u5047\u8bbe\u73b0\u5728\u6211\u662f\u848b\u5148\u751f(system\u8fdb\u7a0b)....\u6545\u4e8b\u6301\u7eed\u4e2d.....<\/em><\/p>\n\n\n\n

2.\u76d1\u63a7\u8fdb\u7a0b\u72b6\u6001<\/h2>\n\n\n\n

\u7a0b\u5e8f\u5728\u8fd0\u884c\u540e\uff0c\u6211\u4eec\u9700\u8981\u4e86\u89e3\u8fdb\u7a0b\u7684\u8fd0\u884c\u72b6\u6001\u3002\u67e5\u770b\u8fdb\u7a0b\u7684\u72b6\u6001\u5206\u4e3a: \u9759\u6001\u548c\u52a8\u6001\u4e24\u79cd\u65b9\u5f0f<\/em><\/p>\n\n\n\n

1.\u4f7f\u7528ps\u547d\u4ee4\u67e5\u770b\u5f53\u524d\u7684\u8fdb\u7a0b\u72b6\u6001(\u9759\u6001)<\/em><\/strong>
1)\u793a\u4f8b\u3001ps -aux\u5e38\u7528\u7ec4\u5408\uff0c\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<\/em><\/p>\n\n\n\n

\u72b6\u6001<\/th>\u63cf\u8ff0<\/th><\/tr><\/thead>
USER<\/td>\u542f\u52a8\u8fdb\u7a0b\u7684\u7528\u6237<\/td><\/tr>
PID<\/td>\u8fdb\u7a0b\u8fd0\u884c\u7684ID\u53f7<\/td><\/tr>
%CPU<\/td>\u8fdb\u7a0b\u5360\u7528CPU\u767e\u5206\u6bd4<\/td><\/tr>
%MEM<\/td>\u8fdb\u7a0b\u5360\u7528\u5185\u5b58\u767e\u5206\u6bd4<\/td><\/tr>
VSZ<\/td>\u8fdb\u7a0b\u5360\u7528\u865a\u62df\u5185\u5b58\u5927\u5c0f (\u5355\u4f4dKB)<\/td><\/tr>
RSS<\/td>\u8fdb\u7a0b\u5360\u7528\u7269\u7406\u5185\u5b58\u5b9e\u9645\u5927\u5c0f (\u5355\u4f4dKB)<\/td><\/tr>
TTY<\/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><\/tr>
STAT<\/td>\u8fdb\u7a0b\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u7684\u72b6\u6001 man ps \uff08\/STATE\uff09<\/td><\/tr>
START<\/td>\u8fdb\u7a0b\u7684\u542f\u52a8\u65f6\u95f4<\/td><\/tr>
TIME<\/td>\u8fdb\u7a0b\u5360\u7528 CPU \u7684\u603b\u65f6\u95f4(\u4e3a0\u8868\u793a\u8fd8\u6ca1\u8d85\u8fc7\u79d2)<\/td><\/tr>
COMMAND<\/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\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

2.STAT\u72b6\u6001\u7684S\u3001Ss\u3001S+\u3001R\u3001R\u3001S+\u7b49\u7b49\uff0c\u90fd\u662f\u4ec0\u4e48\u610f\u601d?<\/em>
\"\"<\/p>\n\n\n\n

STAT\u57fa\u672c\u72b6\u6001<\/th>\u63cf\u8ff0<\/th>STAT\u72b6\u6001+\u7b26\u53f7<\/th>\u63cf\u8ff0<\/th><\/tr><\/thead>
R<\/td>\u8fdb\u7a0b\u8fd0\u884c<\/td>s<\/td>\u8fdb\u7a0b\u662f\u63a7\u5236\u8fdb\u7a0b\uff0c Ss\u8fdb\u7a0b\u7684\u9886\u5bfc\u8005\uff0c\u7236\u8fdb\u7a0b<\/td><\/tr>
S<\/td>\u53ef\u4e2d\u65ad\u7761\u7720<\/td><<\/td>\u8fdb\u7a0b\u8fd0\u884c\u5728\u9ad8\u4f18\u5148\u7ea7\u4e0a\uff0cS<\u4f18\u5148\u7ea7\u8f83\u9ad8\u7684\u8fdb\u7a0b<\/td><\/tr>
T<\/td>\u8fdb\u7a0b\u88ab\u6682\u505c<\/td>N<\/td>\u8fdb\u7a0b\u8fd0\u884c\u5728\u4f4e\u4f18\u5148\u7ea7\u4e0a\uff0cSN\u4f18\u5148\u7ea7\u8f83\u4f4e\u7684\u8fdb\u7a0b<\/td><\/tr>
D<\/td>\u4e0d\u53ef\u4e2d\u65ad\u7761\u7720<\/td>+<\/td>\u5f53\u524d\u8fdb\u7a0b\u8fd0\u884c\u5728\u524d\u53f0\uff0cR+\u8be5\u8868\u793a\u8fdb\u7a0b\u5728\u524d\u53f0\u8fd0\u884c<\/td><\/tr>
Z<\/td>\u50f5\u5c38\u8fdb\u7a0b<\/td>l<\/td>\u8fdb\u7a0b\u662f\u591a\u7ebf\u7a0b\u7684\uff0cSl\u8868\u793a\u8fdb\u7a0b\u662f\u4ee5\u7ebf\u7a0b\u65b9\u5f0f\u8fd0\u884c<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u6848\u4f8b\u4e00\u3001PS\u547d\u4ee4\u67e5\u770b\u8fdb\u7a0b\u72b6\u6001\u5207\u6362<\/em><\/p>\n\n\n\n

#1.\u5728\u7ec8\u7aef1\u4e0a\u8fd0\u884cvim\n[root@sfy ~]# vim oldboy\n\n#2.\u5728\u7ec8\u7aef2\u4e0a\u8fd0\u884cps\u547d\u4ee4\u67e5\u770b\u72b6\u6001\n[root@sfy ~]# ps aux|grep oldboy    #S\u8868\u793a\u7761\u7720\u6a21\u5f0f\uff0c+\u8868\u793a\u524d\u53f0\u8fd0\u884c\nroot      58118  0.4  0.2 151788  5320 pts\/1    S+   22:11   0:00 oldboy\nroot      58120  0.0  0.0 112720   996 pts\/0    R+   22:12   0:00 grep --color=auto oldboy\n#\u5728\u7ec8\u7aef1\u4e0a\u6302\u8d77vim\u547d\u4ee4\uff0c\u6309\u4e0b\uff1actrl+z \n\n#3.\u56de\u5230\u7ec8\u7aef2\u518d\u6b21\u8fd0\u884cps\u547d\u4ee4\u67e5\u770b\u72b6\u6001\n[root@sfy ~]# ps aux|grep oldboy    #T\u8868\u793a\u505c\u6b62\u72b6\u6001\nroot      58118  0.1  0.2 151788  5320 pts\/1    T    22:11   0:00 vim oldboy\nroot      58125  0.0  0.0 112720   996 pts\/0    R+   22:12   0:00 grep --color=auto oldboy\n<\/code><\/pre>\n\n\n\n
\u6848\u4f8b\u4e8c\u3001PS\u547d\u4ee4\u67e5\u770b\u4e0d\u53ef\u4e2d\u65ad\u72b6\u6001\u8fdb\u7a0b<\/em><\/p>\n\n\n\n
#1.\u4f7f\u7528tar\u6253\u5305\u6587\u4ef6\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u7ec8\u7aef\u4e0d\u65ad\u67e5\u770b\u72b6\u6001\uff0c\u7531S+\uff0cR+\u53d8\u4e3aD+\n[root@sfy ~]# tar -czf etc.tar.gz \/etc\/ \/usr\/ \/var\/\n\n[root@sfy ~]# ps aux|grep tar|grep -v grep\nroot      58467  5.5  0.2 127924  5456 pts\/1    R+   22:22   0:04 tar -czf etc.tar.gz \/etc\/ \n[root@sfy ~]# ps aux|grep tar|grep -v grep\nroot      58467  5.5  0.2 127088  4708 pts\/1    S+   22:22   0:03 tar -czf etc.tar.gz \/etc\/ \n[root@sfy ~]# ps aux|grep tar|grep -v grep\nroot      58467  5.6  0.2 127232  4708 pts\/1    D+   22:22   0:03 tar -czf etc.tar.gz \/etc\/ \n<\/code><\/pre>\n\n\n\n
2.\u4f7f\u7528top\u547d\u4ee4\u67e5\u770b\u5f53\u524d\u7684\u8fdb\u7a0b\u72b6\u6001(\u52a8\u6001)<\/em><\/strong><\/p>\n\n\n\n
\u4efb\u52a1<\/th>\u542b\u4e49<\/th><\/tr><\/thead>
Tasks: 129 total<\/td>\u5f53\u7136\u8fdb\u7a0b\u7684\u603b\u6570<\/td><\/tr>
1 running<\/td>\u6b63\u5728\u8fd0\u884c\u7684\u8fdb\u7a0b\u6570<\/td><\/tr>
128 sleeping<\/td>\u7761\u7720\u7684\u8fdb\u7a0b\u6570<\/td><\/tr>
0 stopped<\/td>\u505c\u6b62\u7684\u8fdb\u7a0b\u6570<\/td><\/tr>
0 zombie<\/td>\u50f5\u5c38\u8fdb\u7a0b\u6570<\/td><\/tr>
%Cpu(s): 0.7 us<\/td>\u7cfb\u7edf\u7528\u6237\u8fdb\u7a0b\u4f7f\u7528CPU\u767e\u5206\u6bd4<\/td><\/tr>
0.7 sy<\/td>\u5185\u6838\u4e2d\u7684\u8fdb\u7a0b\u5360\u7528CPU\u767e\u5206\u6bd4\uff0c\u901a\u5e38\u5185\u6838\u662f\u4e8e\u786c\u4ef6\u8fdb\u884c\u4ea4\u4e92<\/td><\/tr>
98.7 id<\/td>\u7a7a\u95f2CPU\u7684\u767e\u5206\u6bd4<\/td><\/tr>
0.0 wa<\/td>CPU\u7b49\u5f85IO\u5b8c\u6210\u7684\u65f6\u95f4<\/td><\/tr>
0.0 hi<\/td>\u786c\u4e2d\u65ad\uff0c\u5360\u7684CPU\u767e\u5206\u6bd4<\/td><\/tr>
0.0 si<\/td>\u8f6f\u4e2d\u65ad\uff0c\u5360\u7684CPU\u767e\u5206\u6bd4<\/td><\/tr>
0.0 st<\/td>\u6bd4\u5982\u865a\u62df\u673a\u5360\u7528\u7269\u7406CPU\u7684\u65f6\u95f4<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
top \u5e38\u89c1\u6307\u4ee4<\/em><\/p>\n\n\n\n
\u5b57\u6bcd<\/th>\u542b\u4e49<\/th><\/tr><\/thead>
h<\/td>\u67e5\u770b\u5e2e\u51fa<\/td><\/tr>
1<\/td>\u6570\u5b571\uff0c\u663e\u793a\u6240\u6709CPU\u6838\u5fc3\u7684\u8d1f\u8f7d<\/td><\/tr>
z<\/td>\u4ee5\u9ad8\u4eae\u663e\u793a\u6570\u636e<\/td><\/tr>
b<\/td>\u9ad8\u4eae\u663e\u793a\u5904\u4e8eR\u72b6\u6001\u7684\u8fdb\u7a0b<\/td><\/tr>
M<\/td>\u6309\u5185\u5b58\u4f7f\u7528\u767e\u5206\u6bd4\u6392\u5e8f\u8f93\u51fa<\/td><\/tr>
P<\/td>\u6309CPU\u4f7f\u7528\u767e\u5206\u6bd4\u6392\u5e8f\u8f93\u51fa<\/td><\/tr>
q<\/td>\u9000\u51fatop<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
3.\u7ba1\u7406\u8fdb\u7a0b\u72b6\u6001<\/h2>\n\n\n\n
\u5f53\u7a0b\u5e8f\u8fd0\u884c\u4e3a\u8fdb\u7a0b\u540e\uff0c\u5982\u679c\u5e0c\u671b\u505c\u6b62\u8fdb\u7a0b\uff0c\u600e\u4e48\u529e\u5462? \u90a3\u4e48\u6b64\u65f6\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528linux\u7684kill\u547d\u4ee4\u5bf9\u8fdb\u7a0b\u53d1\u9001\u5173\u95ed\u4fe1\u53f7\u3002\u5f53\u7136\u9664\u4e86kill\u3001\u8fd8\u6709killall\uff0cpkill<\/em><\/p>\n\n\n\n
1.\u4f7f\u7528kill -l\u5217\u51fa\u5f53\u524d\u7cfb\u7edf\u6240\u652f\u6301\u7684\u4fe1\u53f7<\/em>
\"\"
\u867d\u7136linux\u652f\u6301\u4fe1\u53f7\u5f88\u591a\uff0c\u4f46\u662f\u6211\u4eec\u4ec5\u5217\u51fa\u6211\u4eec\u6700\u4e3a\u5e38\u7528\u76843\u4e2a\u4fe1\u53f7<\/em><\/p>\n\n\n\n
\u6570\u5b57\u7f16\u53f7<\/th>\u4fe1\u53f7\u542b\u4e49<\/th>\u4fe1\u53f7\u7ffb\u8bd1<\/th><\/tr><\/thead>
1<\/td>SIGHUP<\/td>\u901a\u5e38\u7528\u6765\u91cd\u65b0\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6<\/td><\/tr>
9<\/td>SIGKILL<\/td>\u5f3a\u5236\u6740\u6b7b\u8fdb\u7a0b<\/td><\/tr>
15<\/td>SIGTERM<\/td>\u7ec8\u6b62\u8fdb\u7a0b\uff0c\u9ed8\u8ba4kill\u4f7f\u7528\u8be5\u4fe1\u53f7<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
1.\u6211\u4eec\u4f7f\u7528kill\u547d\u4ee4\u6740\u6b7b\u6307\u5b9aPID\u7684\u8fdb\u7a0b\u3002<\/em><\/p>\n\n\n\n
#1.\u7ed9 vsftpd \u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7 1,15\n[root@sfy ~]# yum -y install vsftpd\n[root@sfy ~]# systemctl start vsftpd\n[root@sfy ~]# ps aux|grep vsftpd\n\n#2.\u53d1\u9001\u91cd\u8f7d\u4fe1\u53f7\uff0c\u4f8b\u5982 vsftpd \u7684\u914d\u7f6e\u6587\u4ef6\u53d1\u751f\u6539\u53d8\uff0c\u5e0c\u671b\u91cd\u65b0\u52a0\u8f7d\n[root@sfy ~]# kill -1 9160\n\n#3.\u53d1\u9001\u505c\u6b62\u4fe1\u53f7\uff0c\u5f53\u7136vsftpd \u670d\u52a1\u6709\u505c\u6b62\u7684\u811a\u672c systemctl stop vsftpd\n[root@sfy ~]# kill 9160\n\n#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\n[root@sfy ~]# kill -9 9160\n<\/code><\/pre>\n\n\n\n
2.Linux\u7cfb\u7edf\u4e2d\u7684killall\u3001pkill\u547d\u4ee4\u7528\u4e8e\u6740\u6b7b\u6307\u5b9a\u540d\u5b57\u7684\u8fdb\u7a0b\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528kill\u547d\u4ee4\u6740\u6b7b\u6307\u5b9a\u8fdb\u7a0bPID\u7684\u8fdb\u7a0b\uff0c\u5982\u679c\u8981\u627e\u5230\u6211\u4eec\u9700\u8981\u6740\u6b7b\u7684\u8fdb\u7a0b\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u5728\u4e4b\u524d\u4f7f\u7528ps\u7b49\u547d\u4ee4\u518d\u914d\u5408grep\u6765\u67e5\u627e\u8fdb\u7a0b\uff0c\u800ckillall\u3001pkill\u628a\u8fd9\u4e24\u4e2a\u8fc7\u7a0b\u5408\u4e8c\u4e3a\u4e00\uff0c\u662f\u4e00\u4e2a\u5f88\u597d\u7528\u7684\u547d\u4ee4\u3002<\/em><\/p>\n\n\n\n
#\u4f8b1\u3001\u901a\u8fc7\u670d\u52a1\u540d\u79f0\u6740\u6389\u8fdb\u7a0b\n[root@sfy ~]# pkill nginx ###\u6ce8\u610f\uff0c\u8fd9\u4e2a\u547d\u4ee4\u5f88\u5371\u9669\uff0c\u4e0d\u4fe1\u4f60pkill\u4e00\u4e0bsh\u8bd5\u8bd5\n[root@sfy ~]# killall nginx###\u5c06\u540c\u540d\u8fdb\u7a0b\u5168\u90e8\u6740\u6b7b\n\n#\u4f8b2\u3001\u4f7f\u7528pkill\u8e22\u51fa\u4ece\u8fdc\u7a0b\u767b\u5f55\u5230\u672c\u673a\u7684\u7528\u6237\uff0c\u7ec8\u6b62pts\/0\u4e0a\u6240\u6709\u8fdb\u7a0b, \u5e76\u4e14bash\u4e5f\u7ed3\u675f\uff08\u7528\u6237\u88ab\u5f3a\u5236\u9000\u51fa\uff09\n[root@sfy ~]# pkill -9 -t pts\/0\n<\/code><\/pre>\n\n\n\n
4.\u7ba1\u7406\u540e\u53f0\u8fdb\u7a0b<\/h2>\n\n\n\n
1.\u4ec0\u4e48\u662f\u540e\u53f0\u8fdb\u7a0b<\/em><\/strong>
\u901a\u5e38\u8fdb\u7a0b\u90fd\u4f1a\u5728\u7ec8\u7aef\u524d\u53f0\u8fd0\u884c\uff0c\u4e00\u65e6\u5173\u95ed\u7ec8\u7aef\uff0c\u8fdb\u7a0b\u4e5f\u4f1a\u968f\u7740\u7ed3\u675f\uff0c\u90a3\u4e48\u6b64\u65f6\u6211\u4eec\u5c31\u5e0c\u671b\u8fdb\u7a0b\u80fd\u5728\u540e\u53f0\u8fd0\u884c\uff0c\u5c31\u662f\u5c06\u5728\u524d\u53f0\u8fd0\u884c\u7684\u8fdb\u7a0b\u653e\u5165\u540e\u53f0\u8fd0\u884c\uff0c\u8fd9\u6837\u53ca\u65f6\u6211\u4eec\u5173\u95ed\u4e86\u7ec8\u7aef\u4e5f\u4e0d\u5f71\u54cd\u8fdb\u7a0b\u7684\u6b63\u5e38\u8fd0\u884c\u3002<\/em><\/p>\n\n\n\n
2.\u6211\u4eec\u4e3a\u4ec0\u4e48\u8981\u5c06\u8fdb\u7a0b\u653e\u5165\u540e\u53f0\u8fd0\u884c<\/em><\/strong>
\u6bd4\u5982\uff1a\u6211\u4eec\u6b64\u524d\u5728\u56fd\u5185\u670d\u52a1\u5668\u5f80\u56fd\u5916\u670d\u52a1\u5668\u4f20\u8f93\u5927\u6587\u4ef6\u65f6\uff0c\u7531\u4e8e\u7f51\u7edc\u7684\u95ee\u9898\u9700\u8981\u4f20\u8f93\u5f88\u4e45\uff0c\u5982\u679c\u5728\u4f20\u8f93\u7684\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u7f51\u7edc\u6296\u52a8\u6216\u8005\u4e0d\u5c0f\u5fc3\u5173\u95ed\u4e86\u7ec8\u7aef\u5219\u4f1a\u5bfc\u81f4\u4f20\u8f93\u5931\u8d25\uff0c\u5982\u679c\u80fd\u5c06\u4f20\u8f93\u7684\u8fdb\u7a0b\u653e\u5165\u540e\u53f0\uff0c\u662f\u4e0d\u662f\u5c31\u80fd\u89e3\u51b3\u6b64\u7c7b\u95ee\u9898\u4e86\u3002<\/em><\/p>\n\n\n\n
3.\u4f7f\u7528\u4ec0\u4e48\u5de5\u5177\u5c06\u8fdb\u7a0b\u653e\u5165\u540e\u53f0<\/em><\/strong>
\u65e9\u671f\u7684\u65f6\u5019\u5927\u5bb6\u90fd\u9009\u62e9\u4f7f\u7528&\u7b26\u53f7\u5c06\u8fdb\u7a0b\u653e\u5165\u540e\u53f0\uff0c\u7136\u540e\u5728\u4f7f\u7528jobs\u3001bg\u3001fg\u7b49\u65b9\u5f0f\u67e5\u770b\u8fdb\u7a0b\u72b6\u6001\uff0c\u4f46\u592a\u9ebb\u70e6\u4e86\u3002\u4e5f\u4e0d\u76f4\u89c2\uff0c\u6240\u4ee5\u6211\u4eec\u63a8\u8350\u4f7f\u7528screen\u3002<\/em><\/p>\n\n\n\n
1.jobs\u3001bg\u3001fg\u7684\u4f7f\u7528(\u5f3a\u70c8\u4e0d\u63a8\u8350\uff0c\u4e86\u89e3\u5373\u53ef)<\/em><\/p>\n\n\n\n
[root@sfy ~]# sleep 3000 & \/\/\u8fd0\u884c\u7a0b\u5e8f(\u65f6)\uff0c\u8ba9\u5176\u5728\u540e\u53f0\u6267\u884c \n[root@sfy ~]# sleep 4000 \/\/^Z,\u5c06\u524d\u53f0\u7684\u7a0b\u5e8f\u6302\u8d77(\u6682\u505c)\u5230\u540e\u53f0 \n[2]+ Stopped sleep 4000\n[root@sfy ~]# ps aux |grep sleep\n[root@sfy ~]# jobs  \/\/\u67e5\u770b\u540e\u53f0\u4f5c\u4e1a\n[1]- Running sleep 3000 & \n[2]+ Stopped sleep 4000\n\n[root@sfy ~]# bg %2     \/\/\u8ba9\u4f5c\u4e1a 2 \u5728\u540e\u53f0\u8fd0\u884c\n[root@sfy ~]# fg %1     \/\/\u5c06\u4f5c\u4e1a 1 \u8c03\u56de\u5230\u524d\u53f0\n[root@sfy ~]# kill %1   \/\/kill 1\uff0c\u7ec8\u6b62 PID \u4e3a 1 \u7684\u8fdb\u7a0b\n\n[root@sfy ~]# (while :; do date; sleep 2; done) & \/\/\u8fdb\u7a0b\u5728\u540e\u53f0\u8fd0\u884c\uff0c\u4f46\u8f93\u51fa\u4f9d\u7136\u5728\u5f53\u524d\u7ec8\u7aef\n[root@sfy ~]# (while :; do date; sleep 2; done) &>\/dev\/null &\n<\/code><\/pre>\n\n\n\n
2.screen\u7684\u4f7f\u7528(\u5f3a\u70c8\u63a8\u8350\uff0c\u751f\u4ea7\u5fc5\u7528)<\/em><\/p>\n\n\n\n
#1.\u5b89\u88c5\n[root@sfy ~]# yum install screen -y\n\n#2.\u5f00\u542f\u4e00\u4e2ascreen\u7a97\u53e3,\u6307\u5b9a\u540d\u79f0\n[root@sfy ~]# screen -S wget_mysql\n\n#3.\u5728screen\u7a97\u53e3\u4e2d\u6267\u884c\u4efb\u52a1\u5373\u53ef\n\n#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\u53e3\nctrl+a+d\n\n#5.\u67e5\u770b\u5f53\u524d\u6b63\u5728\u8fd0\u884c\u7684screen\u6709\u54ea\u4e9b\n[root@sfy ~]# screen -list\nThere is a screen on:\n    22058.wget_mysql    (Detached)\n1 Socket in \/var\/run\/screen\/S-root.\n\n#6.\u8fdb\u5165\u6b63\u5728\u8fd0\u884c\u7684screen\n[root@sfy ~]# screen -r wget_mysql\n[root@sfy ~]# screen -r 22058\n<\/code><\/pre>\n\n\n\n
5.\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7[\u8fdb\u9636]<\/h2>\n\n\n\n
1.\u4ec0\u4e48\u4f18\u5148\u7ea7<\/em><\/strong>
\u4f18\u5148\u7ea7\u6307\u7684\u662f\u4f18\u5148\u4eab\u53d7\u7cfb\u7edf\u7684\u8d44\u6e90<\/em><\/p>\n\n\n\n
2.\u4e3a\u4ec0\u4e48\u8981\u6709\u7cfb\u7edf\u4f18\u5148\u7ea7<\/em><\/strong>
\u4e3e\u4e2a\u4f8b\u5b50: \u6d77\u5e95\u635e\u706b\u9505\u6b63\u5e38\u60c5\u51b5\u4e0b\u54cd\u5e94\u5c31\u7279\u522b\u5feb\uff0c\u90a3\u4e48\u5f53\u8282\u5047\u65e5\u6765\u4e34\u65f6\u4eba\u5458\u7a81\u589e\u5219\u4f1a\u5bfc\u81f4\u5904\u7406\u8bf7\u6c42\u7279\u522b\u6162\uff0c\u90a3\u4e48\u5047\u8bbe\u6211\u662f\u6d77\u5e95\u635eVIP\u5ba2\u6237(\u6700\u9ad8\u4f18\u5148\u7ea7)\uff0c\u65e0\u8bba\u95e8\u5e97\u591a\u4e48\u7e41\u5fd9\uff0c\u6211\u90fd\u4e0d\u7528\u6392\u961f\uff0c\u6d77\u5e95\u635e\u4eba\u5458\u4f1a\u76f4\u63a5\u670d\u52a1\u4e8e\u6211\uff0c\u6ee1\u8db3\u6211\u7684\u9700\u6c42\u3002\u81f3\u4e8e\u6ca1\u6709VIP\u7684\u4eba\u5458(\u8f83\u4f4e\u4f18\u5148\u7ea7)\u5219\u8fdb\u5165\u6392\u961f\u7b49\u5f85\u72b6\u6001\u3002<\/em><\/p>\n\n\n\n
3.\u7cfb\u7edf\u4e2d\u5982\u4f55\u7ed9\u8fdb\u7a0b\u914d\u7f6e\u4f18\u5148\u7ea7?<\/em><\/strong>
\u5728\u542f\u52a8\u8fdb\u7a0b\u65f6\uff0c\u4e3a\u4e0d\u540c\u7684\u8fdb\u7a0b\u4f7f\u7528\u4e0d\u540c\u7684\u8c03\u5ea6\u7b56\u7565\u3002
nice \u503c\u8d8a\u9ad8\uff1a \u8868\u793a\u4f18\u5148\u7ea7\u8d8a\u4f4e\uff0c\u4f8b\u5982+19\uff0c\u8be5\u8fdb\u7a0b\u5bb9\u6613\u5c06CPU \u4f7f\u7528\u91cf\u8ba9\u7ed9\u5176\u4ed6\u8fdb\u7a0b\u3002
nice \u503c\u8d8a\u4f4e\uff1a \u8868\u793a\u4f18\u5148\u7ea7\u8d8a\u9ad8\uff0c\u4f8b\u5982-20\uff0c\u8be5\u8fdb\u7a0b\u66f4\u4e0d\u503e\u5411\u4e8e\u8ba9\u51faCPU\u3002<\/em><\/p>\n\n\n\n
1) \u4f7f\u7528top\u6216ps\u547d\u4ee4\u67e5\u770b\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7<\/em><\/p>\n\n\n\n
#1.\u4f7f\u7528top\u53ef\u4ee5\u67e5\u770bnice\u4f18\u5148\u7ea7\u3002  NI: \u5b9e\u9645nice\u7ea7\u522b\uff0c\u9ed8\u8ba4\u662f0\u3002 PR: \u663e\u793anice\u503c\uff0c-20\u6620\u5c04\u52300\uff0c+19\u6620\u5c04\u523039\nPID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND\n1083 root      20   0  298628   2808   1544 S  0.3  0.1   2:49.28 vmtoolsd\n5    root       0 -20       0      0      0 S  0.0  0.0   0:00.00 kworker\/0:+\n\n#2.\u4f7f\u7528ps\u67e5\u770b\u8fdb\u7a0b\u4f18\u5148\u7ea7\n[root@m01 ~]# ps axo command,nice |grep sshd|grep -v grep\n\/usr\/sbin\/sshd -D             0\nsshd: root@pts\/2              0\n<\/code><\/pre>\n\n\n\n
2) nice\u6307\u5b9a\u7a0b\u5e8f\u7684\u4f18\u5148\u7ea7\u3002\u8bed\u6cd5\u683c\u5f0f nice -n \u4f18\u5148\u7ea7\u6570\u5b57 \u8fdb\u7a0b\u540d\u79f0<\/em><\/p>\n\n\n\n
#1.\u5f00\u542fvim\u5e76\u4e14\u6307\u5b9a\u7a0b\u5e8f\u4f18\u5148\u7ea7\u4e3a-5\n[root@m01 ~]# nice -n -5 vim &\n[1] 98417\n\n#2.\u67e5\u770b\u8be5\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\u60c5\u51b5\n[root@m01 ~]# ps axo pid,command,nice |grep 98417\n 98417 vim                         -5\n<\/code><\/pre>\n\n\n\n
3) renice\u547d\u4ee4\u4fee\u6539\u4e00\u4e2a\u6b63\u5728\u8fd0\u884c\u7684\u8fdb\u7a0b\u4f18\u5148\u7ea7\u3002\u8bed\u6cd5\u683c\u5f0f renice -n \u4f18\u5148\u7ea7\u6570\u5b57 \u8fdb\u7a0bpid<\/em><\/p>\n\n\n\n
#1.\u67e5\u770bsshd\u8fdb\u7a0b\u5f53\u524d\u7684\u4f18\u5148\u7ea7\u72b6\u6001\n[root@m01 ~]# ps axo pid,command,nice |grep \u6298\u53e0shd\n 70840 sshd: root@pts\/2              0\n 98002 \/usr\/sbin\/sshd -D             0\n \n#2.\u8c03\u6574sshd\u4e3b\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\n[root@m01 ~]# renice -n -20 98002\n98002 (process ID) old priority 0, new priority -20\n\n#3.\u8c03\u6574\u4e4b\u540e\u8bb0\u5f97\u9000\u51fa\u7ec8\u7aef\n[root@m01 ~]# ps axo pid,command,nice |grep \u6298\u53e0shd\n 70840 sshd: root@pts\/2              0\n 98002 \/usr\/sbin\/sshd -D           -20\n[root@m01 ~]# exit\n\n#4.\u5f53\u518d\u6b21\u767b\u9646sshd\u670d\u52a1\uff0c\u4f1a\u7531\u4e3b\u8fdb\u7a0bfork\u5b50\u8fdb\u7a0b(\u90a3\u4e48\u5b50\u8fdb\u7a0b\u4f1a\u7ee7\u627f\u4e3b\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7)\n[root@m01 ~]# ps axo pid,command,nice |grep \u6298\u53e0shd\n 98002 \/usr\/sbin\/sshd -D           -20\n 98122 sshd: root@pts\/0            -20\n<\/code><\/pre>\n\n\n\n
6.\u7cfb\u7edf\u5e73\u5747\u8d1f\u8f7d[\u8fdb\u9636]<\/h2>\n\n\n\n
\u6bcf\u6b21\u53d1\u73b0\u7cfb\u7edf\u53d8\u6162\u65f6\uff0c\u6211\u4eec\u901a\u5e38\u505a\u7684\u7b2c\u4e00\u4ef6\u4e8b\uff0c\u5c31\u662f\u6267\u884c top \u6216\u8005 uptime \u6216\u8005w\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\u3002<\/em><\/p>\n\n\n\n
[root@m01 ~]# uptime\n 04:49:26 up 2 days,  2:33,  2 users,  load average: 0.70, 0.04, 0.05\n#\u6211\u4eec\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\u3002\n\n# \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\uff08Load Average\uff09\u3002\n<\/code><\/pre>\n\n\n\n
1.\u4ec0\u4e48\u662f\u5e73\u5747\u8d1f\u8f7d<\/em><\/strong>
\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<\/em><\/p>\n\n\n\n
2.\u53ef\u8fd0\u884c\u72b6\u6001\u548c\u4e0d\u53ef\u4e2d\u65ad\u72b6\u6001\u662f\u4ec0\u4e48<\/em><\/strong>
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\u3002
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 Disk Sleep\uff09\u7684\u8fdb\u7a0b\u3002
\u4f8b\u5982: \u5f53\u4e00\u4e2a\u8fdb\u7a0b\u5411\u78c1\u76d8\u8bfb\u5199\u6570\u636e\u65f6\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\uff0c\u5728\u5f97\u5230\u78c1\u76d8\u56de\u590d\u524d\uff0c\u5b83\u662f\u4e0d\u80fd\u88ab\u5176\u4ed6\u8fdb\u7a0b\u6216\u8005\u4e2d\u65ad\u6253\u65ad\u7684\uff0c\u8fd9\u4e2a\u65f6\u5019\u7684\u8fdb\u7a0b\u5c31\u5904\u4e8e\u4e0d\u53ef\u4e2d\u65ad\u72b6\u6001\u3002\u5982\u679c\u6b64\u65f6\u7684\u8fdb\u7a0b\u88ab\u6253\u65ad\u4e86\uff0c\u5c31\u5bb9\u6613\u51fa\u73b0\u78c1\u76d8\u6570\u636e\u4e0e\u8fdb\u7a0b\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002<\/em>\u6240\u4ee5\uff0c\u4e0d\u53ef\u4e2d\u65ad\u72b6\u6001\u5b9e\u9645\u4e0a\u662f\u7cfb\u7edf\u5bf9\u8fdb\u7a0b\u548c\u786c\u4ef6\u8bbe\u5907\u7684\u4e00\u79cd\u4fdd\u62a4\u673a\u5236\u3002<\/em><\/strong><\/p>\n\n\n\n
\u5212\u91cd\u70b9\uff0c\u56e0\u6b64\u4f60\u53ef\u4ee5\u7b80\u5355\u7406\u89e3\u4e3a\uff0c\u5e73\u5747\u8d1f\u8f7d\u5176\u5b9e\u5c31\u662f\u5355\u4f4d\u65f6\u95f4\u5185\u7684\u6d3b\u8dc3\u8fdb\u7a0b\u6570\u3002<\/em><\/strong><\/p>\n\n\n\n
3.\u90a3\u5e73\u5747\u8d1f\u8f7d\u4e3a\u591a\u5c11\u65f6\u5408\u7406<\/em><\/strong>
\u6700\u7406\u60f3\u7684\u72b6\u6001\u662f\u6bcf\u4e2a CPU \u4e0a\u90fd\u521a\u597d\u8fd0\u884c\u7740\u4e00\u4e2a\u8fdb\u7a0b\uff0c\u8fd9\u6837\u6bcf\u4e2a CPU \u90fd\u5f97\u5230\u4e86\u5145\u5206\u5229\u7528\u3002\u6240\u4ee5\u5728\u8bc4\u5224\u5e73\u5747\u8d1f\u8f7d\u65f6\uff0c\u9996\u5148\u4f60\u8981\u77e5\u9053\u7cfb\u7edf\u6709\u51e0\u4e2a CPU\uff0c\u8fd9\u53ef\u4ee5\u901a\u8fc7 top \u547d\u4ee4\u83b7\u53d6\uff0c\u6216grep 'model name' \/proc\/cpuinfo<\/code><\/em>\uff0c\u6216\u8005lscpu\u547d\u4ee4\u83b7\u53d6<\/p>\n\n\n\n
\u4f8b1\u3001\u5047\u8bbe\u73b0\u5728\u5728 4\u30012\u30011\u6838\u7684CPU\u4e0a\uff0c\u5982\u679c\u5e73\u5747\u8d1f\u8f7d\u4e3a 2 \u65f6\uff0c\u610f\u5473\u7740\u4ec0\u4e48\u5462\uff1f
Q1.\u57284 \u4e2a CPU \u7684\u7cfb\u7edf\u4e0a\uff0c\u610f\u5473\u7740 CPU \u6709 50% \u7684\u7a7a\u95f2\u3002
Q2.\u57282 \u4e2a CPU \u7684\u7cfb\u7edf\u4e0a\uff0c\u610f\u5473\u7740\u6240\u6709\u7684 CPU \u90fd\u521a\u597d\u88ab\u5b8c\u5168\u5360\u7528\u3002
Q3.\u800c1 \u4e2a CPU \u7684\u7cfb\u7edf\u4e0a\uff0c\u5219\u610f\u5473\u7740\u6709\u4e00\u534a\u7684\u8fdb\u7a0b\u7ade\u4e89\u4e0d\u5230 CPU\u3002<\/em><\/p>\n\n\n\n
PS: \u5e73\u5747\u8d1f\u8f7d\u6709\u4e09\u4e2a\u6570\u503c\uff0c\u6211\u4eec\u5e94\u8be5\u5173\u6ce8\u54ea\u4e2a\u5462?<\/em><\/strong>
\u5b9e\u9645\u4e0a\uff0c\u6211\u4eec\u90fd\u9700\u8981\u5173\u6ce8\u3002\u5c31\u597d\u6bd4\u4e0a\u6d774\u6708\u7684\u5929\u6c14\uff0c\u5982\u679c\u53ea\u770b\u665a\u4e0a\u5929\u6c14\uff0c\u611f\u89c9\u5728\u8fc7\u51ac\u5929\u5462\u3002\u4f46\u5982\u679c\u4f60\u7ed3\u5408\u4e86\u65e9\u4e0a\u3001\u4e2d\u5348\u3001\u665a\u4e0a\u4e09\u4e2a\u65f6\u95f4\u70b9\u7684\u6e29\u5ea6\u6765\u770b\uff0c\u57fa\u672c\u5c31\u53ef\u4ee5\u5168\u65b9\u4f4d\u4e86\u89e3\u8fd9\u4e00\u5929\u7684\u5929\u6c14\u60c5\u51b5\u4e86\u3002<\/em><\/p>\n\n\n\n
1.\u5982\u679c 1 \u5206\u949f\u30015 \u5206\u949f\u300115 \u5206\u949f\u7684\u4e09\u4e2a\u503c\u57fa\u672c\u76f8\u540c\uff0c\u6216\u8005\u76f8\u5dee\u4e0d\u5927\uff0c\u90a3\u5c31\u8bf4\u660e\u7cfb\u7edf\u8d1f\u8f7d\u5f88\u5e73\u7a33\u3002
2.\u4f46\u5982\u679c 1 \u5206\u949f\u7684\u503c\u8fdc\u5c0f\u4e8e 15 \u5206\u949f\u7684\u503c\uff0c\u5c31\u8bf4\u660e\u7cfb\u7edf\u6700\u8fd1 1 \u5206\u949f\u7684\u8d1f\u8f7d\u5728\u51cf\u5c11\uff0c\u800c\u8fc7\u53bb 15 \u5206\u949f\u5185\u5374\u6709\u5f88\u5927\u7684\u8d1f\u8f7d\u3002
3.\u53cd\u8fc7\u6765\uff0c\u5982\u679c 1 \u5206\u949f\u7684\u503c\u8fdc\u5927\u4e8e 15 \u5206\u949f\u7684\u503c\uff0c\u5c31\u8bf4\u660e\u6700\u8fd1 1 \u5206\u949f\u7684\u8d1f\u8f7d\u5728\u589e\u52a0\uff0c\u8fd9\u79cd\u589e\u52a0\u6709\u53ef\u80fd\u53ea\u662f\u4e34\u65f6\u6027\u7684\uff0c\u4e5f\u6709\u53ef\u80fd\u8fd8\u4f1a\u6301\u7eed\u4e0a\u5347\uff0c\u6240\u4ee5\u5c31\u9700\u8981\u6301\u7eed\u89c2\u5bdf\u3002
PS: \u4e00\u65e6 1 \u5206\u949f\u7684\u5e73\u5747\u8d1f\u8f7d\u63a5\u8fd1\u6216\u8d85\u8fc7\u4e86 CPU \u7684\u4e2a\u6570\uff0c\u5c31\u610f\u5473\u7740\u7cfb\u7edf\u6b63\u5728\u53d1\u751f\u8fc7\u8f7d\u7684\u95ee\u9898\uff0c\u8fd9\u65f6\u5c31\u5f97\u5206\u6790\u95ee\u9898\uff0c\u5e76\u8981\u60f3\u529e\u6cd5\u4f18\u5316\u4e86<\/em><\/p>\n\n\n\n
\u5728\u6765\u770b\u4e2a\u4f8b\u5b503\u3001\u5047\u8bbe\u6211\u4eec\u5728\u67092\u4e2a CPU \u7cfb\u7edf\u4e0a\u770b\u5230\u5e73\u5747\u8d1f\u8f7d\u4e3a 2.73\uff0c6.90\uff0c12.98
\u90a3\u4e48\u8bf4\u660e\u5728\u8fc7\u53bb1 \u5206\u949f\u5185\uff0c\u7cfb\u7edf\u6709 136% \u7684\u8d85\u8f7d (2.73\/2=136%)
\u800c\u5728\u8fc7\u53bb 5 \u5206\u949f\u5185\uff0c\u6709 345% \u7684\u8d85\u8f7d (6.90\/2=345%)
\u800c\u5728\u8fc7\u53bb15 \u5206\u949f\u5185\uff0c\u6709 649% \u7684\u8d85\u8f7d\uff0c(12.98\/2=649%)
\u4f46\u4ece\u6574\u4f53\u8d8b\u52bf\u6765\u770b\uff0c\u7cfb\u7edf\u7684\u8d1f\u8f7d\u662f\u5728\u9010\u6b65\u7684\u964d\u4f4e\u3002<\/em><\/p>\n\n\n\n
4.\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<\/em><\/strong>
\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% \u8fd9\u4e2a\u6570\u5b57\u5e76\u4e0d\u662f\u7edd\u5bf9\u7684\uff0c\u6700\u63a8\u8350\u7684\u65b9\u6cd5\uff0c\u8fd8\u662f\u628a\u7cfb\u7edf\u7684\u5e73\u5747\u8d1f\u8f7d\u76d1\u63a7\u8d77\u6765\uff0c\u7136\u540e\u6839\u636e\u66f4\u591a\u7684\u5386\u53f2\u6570\u636e\uff0c\u5224\u65ad\u8d1f\u8f7d\u7684\u53d8\u5316\u8d8b\u52bf\u3002\u5f53\u53d1\u73b0\u8d1f\u8f7d\u6709\u660e\u663e\u5347\u9ad8\u8d8b\u52bf\u65f6\uff0c\u6bd4\u5982\u8bf4\u8d1f\u8f7d\u7ffb\u500d\u4e86\uff0c\u4f60\u518d\u53bb\u505a\u5206\u6790\u548c\u8c03\u67e5\u3002<\/em><\/p>\n\n\n\n
5.\u5e73\u5747\u8d1f\u8f7d\u4e0e CPU \u4f7f\u7528\u7387\u6709\u4ec0\u4e48\u5173\u7cfb<\/em><\/strong>
\u5728\u5b9e\u9645\u5de5\u4f5c\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u5bb9\u6613\u628a\u5e73\u5747\u8d1f\u8f7d\u548c CPU \u4f7f\u7528\u7387\u6df7\u6dc6\uff0c\u6240\u4ee5\u5728\u8fd9\u91cc\uff0c\u6211\u4e5f\u505a\u4e00\u4e2a\u533a\u5206\u3002\u53ef\u80fd\u4f60\u4f1a\u7591\u60d1\uff0c\u65e2\u7136\u5e73\u5747\u8d1f\u8f7d\u4ee3\u8868\u7684\u662f\u6d3b\u8dc3\u8fdb\u7a0b\u6570\uff0c\u90a3\u5e73\u5747\u8d1f\u8f7d\u9ad8\u4e86\uff0c\u4e0d\u5c31\u610f\u5473\u7740 CPU \u4f7f\u7528\u7387\u9ad8\u5417\uff1f
\u6211\u4eec\u8fd8\u662f\u8981\u56de\u5230\u5e73\u5747\u8d1f\u8f7d\u7684\u542b\u4e49\u4e0a\u6765\uff0c\u5e73\u5747\u8d1f\u8f7d\u662f\u6307\u5355\u4f4d\u65f6\u95f4\u5185\uff0c\u5904\u4e8e\u53ef\u8fd0\u884c\u72b6\u6001\u548c\u4e0d\u53ef\u4e2d\u65ad\u72b6\u6001\u7684\u8fdb\u7a0b\u6570\u3002\u6240\u4ee5\uff0c\u5b83\u4e0d\u4ec5\u5305\u62ec\u4e86\u6b63\u5728\u4f7f\u7528 CPU \u7684\u8fdb\u7a0b\uff0c\u8fd8\u5305\u62ec\u7b49\u5f85 CPU \u548c\u7b49\u5f85 I\/O \u7684\u8fdb\u7a0b\u3002<\/em><\/p>\n\n\n\n
\u800c CPU \u4f7f\u7528\u7387\uff0c\u662f\u5355\u4f4d\u65f6\u95f4\u5185 CPU \u7e41\u5fd9\u60c5\u51b5\u7684\u7edf\u8ba1\uff0c\u8ddf\u5e73\u5747\u8d1f\u8f7d\u5e76\u4e0d\u4e00\u5b9a\u5b8c\u5168\u5bf9\u5e94\u3002\u6bd4\u5982\uff1a
CPU \u5bc6\u96c6\u578b\u8fdb\u7a0b\uff0c\u4f7f\u7528\u5927\u91cf CPU \u4f1a\u5bfc\u81f4\u5e73\u5747\u8d1f\u8f7d\u5347\u9ad8\uff0c\u6b64\u65f6\u8fd9\u4e24\u8005\u662f\u4e00\u81f4\u7684\uff1b
I\/O \u5bc6\u96c6\u578b\u8fdb\u7a0b\uff0c\u7b49\u5f85 I\/O \u4e5f\u4f1a\u5bfc\u81f4\u5e73\u5747\u8d1f\u8f7d\u5347\u9ad8\uff0c\u4f46 CPU \u4f7f\u7528\u7387\u4e0d\u4e00\u5b9a\u5f88\u9ad8\uff1b
\u5927\u91cf\u7b49\u5f85 CPU \u7684\u8fdb\u7a0b\u8c03\u5ea6\u4e5f\u4f1a\u5bfc\u81f4\u5e73\u5747\u8d1f\u8f7d\u5347\u9ad8\uff0c\u6b64\u65f6\u7684 CPU \u4f7f\u7528\u7387\u4e5f\u4f1a\u6bd4\u8f83\u9ad8\u3002<\/em><\/p>\n\n\n\n
6.\u5e73\u5747\u8d1f\u8f7d\u6848\u4f8b\u5206\u6790\u5b9e\u6218<\/em><\/strong>
\u4e0b\u9762\uff0c\u6211\u4eec\u4ee5\u4e09\u4e2a\u793a\u4f8b\u5206\u522b\u6765\u770b\u8fd9\u4e09\u79cd\u60c5\u51b5\uff0c\u5e76\u7528 stress\u3001mpstat\u3001pidstat \u7b49\u5de5\u5177\uff0c\u627e\u51fa\u5e73\u5747\u8d1f\u8f7d\u5347\u9ad8\u7684\u6839\u6e90\u3002
stress \u662f Linux \u7cfb\u7edf\u538b\u529b\u6d4b\u8bd5\u5de5\u5177\uff0c\u8fd9\u91cc\u6211\u4eec\u7528\u4f5c\u5f02\u5e38\u8fdb\u7a0b\u6a21\u62df\u5e73\u5747\u8d1f\u8f7d\u5347\u9ad8\u7684\u573a\u666f\u3002
mpstat \u662f\u591a\u6838 CPU \u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u7528\u6765\u5b9e\u65f6\u67e5\u770b\u6bcf\u4e2a CPU \u7684\u6027\u80fd\u6307\u6807\uff0c\u4ee5\u53ca\u6240\u6709 CPU \u7684\u5e73\u5747\u6307\u6807\u3002
pidstat \u662f\u4e00\u4e2a\u5e38\u7528\u7684\u8fdb\u7a0b\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u7528\u6765\u5b9e\u65f6\u67e5\u770b\u8fdb\u7a0b\u7684 CPU\u3001\u5185\u5b58\u3001I\/O \u4ee5\u53ca\u4e0a\u4e0b\u6587\u5207\u6362\u7b49\u6027\u80fd\u6307\u6807\u3002<\/em><\/p>\n\n\n\n
#\u5982\u679c\u51fa\u73b0\u65e0\u6cd5\u4f7f\u7528mpstat\u3001pidstat\u547d\u4ee4\u67e5\u770b%wait\u6307\u6807\u5efa\u8bae\u66f4\u65b0\u4e0b\u8f6f\u4ef6\u5305\nwget http:\/\/pagesperso-orange.fr\/sebastien.godard\/sysstat-11.7.3-1.x86_64.rpm\nrpm -Uvh sysstat-11.7.3-1.x86_64.rpm\n<\/code><\/pre>\n\n\n\n
\u573a\u666f\u4e00\uff1aCPU \u5bc6\u96c6\u578b\u8fdb\u7a0b<\/em><\/strong><\/p>\n\n\n\n
1.\u9996\u5148\uff0c\u6211\u4eec\u5728\u7b2c\u4e00\u4e2a\u7ec8\u7aef\u8fd0\u884c stress \u547d\u4ee4\uff0c\u6a21\u62df\u4e00\u4e2a CPU \u4f7f\u7528\u7387 100% \u7684\u573a\u666f\uff1a<\/em><\/p>\n\n\n\n
[root@m01 ~]# stress --cpu 1 --timeout 600\n<\/code><\/pre>\n\n\n\n
2.\u63a5\u7740\uff0c\u5728\u7b2c\u4e8c\u4e2a\u7ec8\u7aef\u8fd0\u884c uptime \u67e5\u770b\u5e73\u5747\u8d1f\u8f7d\u7684\u53d8\u5316\u60c5\u51b5<\/em><\/p>\n\n\n\n
# \u4f7f\u7528watch -d \u53c2\u6570\u8868\u793a\u9ad8\u4eae\u663e\u793a\u53d8\u5316\u7684\u533a\u57df(\u6ce8\u610f\u8d1f\u8f7d\u4f1a\u6301\u7eed\u5347\u9ad8)\n[root@m01 ~]# watch -d uptime\n17:27:44 up 2 days,  3:11,  3 users,  load average: 1.10, 0.30, 0.17\n<\/code><\/pre>\n\n\n\n
3.\u6700\u540e\uff0c\u5728\u7b2c\u4e09\u4e2a\u7ec8\u7aef\u8fd0\u884c mpstat \u67e5\u770b CPU \u4f7f\u7528\u7387\u7684\u53d8\u5316\u60c5\u51b5<\/em><\/p>\n\n\n\n
# -P ALL \u8868\u793a\u76d1\u63a7\u6240\u6709 CPU\uff0c\u540e\u9762\u6570\u5b57 5 \u8868\u793a\u95f4\u9694 5 \u79d2\u540e\u8f93\u51fa\u4e00\u7ec4\u6570\u636e\n[root@m01 ~]# mpstat -P ALL 5\nLinux 3.10.0-957.1.3.el7.x86_64 (m01)   2019\u5e7404\u670829\u65e5     _x86_64_    (1 CPU)\n\n17\u65f632\u520603\u79d2  CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest  %gnice   %idle\n17\u65f632\u520608\u79d2  all   99.80    0.00    0.20    0.00    0.00    0.00    0.00    0.00    0.00    0.00\n17\u65f632\u520608\u79d2    0   99.80    0.00    0.20    0.00    0.00    0.00    0.00    0.00    0.00    0.00\n\n#\u5355\u6838CPU\u6240\u4ee5\u53ea\u6709\u4e00\u4e2aall\u548c0\n<\/code><\/pre>\n\n\n\n
4.\u4ece\u7ec8\u7aef\u4e8c\u4e2d\u53ef\u4ee5\u770b\u5230\uff0c1 \u5206\u949f\u7684\u5e73\u5747\u8d1f\u8f7d\u4f1a\u6162\u6162\u589e\u52a0\u5230 1.00\uff0c\u800c\u4ece\u7ec8\u7aef\u4e09\u4e2d\u8fd8\u53ef\u4ee5\u770b\u5230\uff0c\u6b63\u597d\u6709\u4e00\u4e2a CPU \u7684\u4f7f\u7528\u7387\u4e3a 100%\uff0c\u4f46\u5b83\u7684 iowait \u53ea\u6709 0\u3002\u8fd9\u8bf4\u660e\uff0c\u5e73\u5747\u8d1f\u8f7d\u7684\u5347\u9ad8\u6b63\u662f\u7531\u4e8e CPU \u4f7f\u7528\u7387\u4e3a 100% \u3002\u90a3\u4e48\uff0c\u5230\u5e95\u662f\u54ea\u4e2a\u8fdb\u7a0b\u5bfc\u81f4\u4e86 CPU \u4f7f\u7528\u7387\u4e3a 100% \u5462\uff1f\u53ef\u4ee5\u4f7f\u7528 pidstat \u6765\u67e5\u8be2<\/em><\/p>\n\n\n\n
# \u95f4\u9694 5 \u79d2\u540e\u8f93\u51fa\u4e00\u7ec4\u6570\u636e\n[root@m01 ~]# pidstat -u 5 1\nLinux 3.10.0-957.1.3.el7.x86_64 (m01)   2019\u5e7404\u670829\u65e5     _x86_64_(1 CPU)\n\n17\u65f633\u520621\u79d2   UID       PID    %usr %system  %guest    %CPU   CPU  Command\n17\u65f633\u520626\u79d2     0    110019   98.80    0.00    0.00   98.80     0  stress\n\n#\u4ece\u8fd9\u91cc\u53ef\u4ee5\u660e\u663e\u770b\u5230\uff0cstress \u8fdb\u7a0b\u7684 CPU \u4f7f\u7528\u7387\u4e3a 100%\u3002\n<\/code><\/pre>\n\n\n\n
\u573a\u666f\u4e8c\uff1aI\/O \u5bc6\u96c6\u578b\u8fdb\u7a0b<\/em><\/strong><\/p>\n\n\n\n
1.\u9996\u5148\u8fd8\u662f\u8fd0\u884c stress \u547d\u4ee4\uff0c\u4f46\u8fd9\u6b21\u6a21\u62df I\/O \u538b\u529b\uff0c\u5373\u4e0d\u505c\u5730\u6267\u884c sync<\/em><\/p>\n\n\n\n
[root@m01 ~]# stress  --io 1 --timeout 600s\n<\/code><\/pre>\n\n\n\n
2.\u7136\u540e\u5728\u7b2c\u4e8c\u4e2a\u7ec8\u7aef\u8fd0\u884c uptime \u67e5\u770b\u5e73\u5747\u8d1f\u8f7d\u7684\u53d8\u5316\u60c5\u51b5\uff1a<\/em><\/p>\n\n\n\n
[root@m01 ~]# watch -d uptime\n18:43:51 up 2 days,  4:27,  3 users,  load average: 1.12, 0.65, 0.00\n<\/code><\/pre>\n\n\n\n
3.\u6700\u540e\u7b2c\u4e09\u4e2a\u7ec8\u7aef\u8fd0\u884c mpstat \u67e5\u770b CPU \u4f7f\u7528\u7387\u7684\u53d8\u5316\u60c5\u51b5\uff1a<\/em><\/p>\n\n\n\n
# \u663e\u793a\u6240\u6709 CPU \u7684\u6307\u6807\uff0c\u5e76\u5728\u95f4\u9694 5 \u79d2\u8f93\u51fa\u4e00\u7ec4\u6570\u636e\n[root@m01 ~]# mpstat -P ALL 5\nLinux 3.10.0-693.2.2.el7.x86_64 (bgx.com)   2019\u5e7405\u670807\u65e5     _x86_64_    (1 CPU)\n\n14\u65f620\u520607\u79d2  CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest  %gnice   %idle\n14\u65f620\u520612\u79d2  all    0.20    0.00   82.45   17.35    0.00    0.00    0.00    0.00    0.00    0.00\n14\u65f620\u520612\u79d2    0    0.20    0.00   82.45   17.35    0.00    0.00    0.00    0.00    0.00    0.00\n\n#\u4f1a\u53d1\u73b0cpu\u7684\u4e0e\u5185\u6838\u6253\u4ea4\u9053\u7684sys\u5360\u7528\u975e\u5e38\u9ad8\n<\/code><\/pre>\n\n\n\n
4.\u90a3\u4e48\u5230\u5e95\u662f\u54ea\u4e2a\u8fdb\u7a0b\uff0c\u5bfc\u81f4 iowait \u8fd9\u4e48\u9ad8\u5462\uff1f\u6211\u4eec\u8fd8\u662f\u7528 pidstat \u6765\u67e5\u8be2<\/em><\/p>\n\n\n\n
# \u95f4\u9694 5 \u79d2\u540e\u8f93\u51fa\u4e00\u7ec4\u6570\u636e\uff0c-u \u8868\u793a CPU \u6307\u6807\n[root@m01 ~]# pidstat -u 5 1\nLinux 3.10.0-957.1.3.el7.x86_64 (m01)   2019\u5e7404\u670829\u65e5     _x86_64_(1 CPU)\n18\u65f629\u520637\u79d2   UID       PID    %usr %system  %guest   %wait    %CPU   CPU  Command\n18\u65f629\u520642\u79d2     0    127259   32.60    0.20    0.00   67.20   32.80     0  stress\n18\u65f629\u520642\u79d2     0    127261    4.60   28.20    0.00   67.20   32.80     0  stress\n18\u65f629\u520642\u79d2     0    127262    4.20   28.60    0.00   67.20   32.80     0  stress\n\n#\u53ef\u4ee5\u53d1\u73b0\uff0c\u8fd8\u662f stress \u8fdb\u7a0b\u5bfc\u81f4\u7684\u3002\n<\/code><\/pre>\n\n\n\n
\u573a\u666f\u4e09\uff1a\u5927\u91cf\u8fdb\u7a0b\u7684\u573a\u666f<\/em><\/strong>
\u5f53\u7cfb\u7edf\u4e2d\u8fd0\u884c\u8fdb\u7a0b\u8d85\u51fa CPU \u8fd0\u884c\u80fd\u529b\u65f6\uff0c\u5c31\u4f1a\u51fa\u73b0\u7b49\u5f85 CPU \u7684\u8fdb\u7a0b\u3002<\/em><\/p>\n\n\n\n
1.\u9996\u5148\uff0c\u6211\u4eec\u8fd8\u662f\u4f7f\u7528 stress\uff0c\u4f46\u8fd9\u6b21\u6a21\u62df\u7684\u662f 4 \u4e2a\u8fdb\u7a0b<\/em><\/p>\n\n\n\n
[root@m01 ~]# stress -c 4 --timeout 600\n<\/code><\/pre>\n\n\n\n
2.\u7531\u4e8e\u7cfb\u7edf\u53ea\u6709 1 \u4e2a CPU\uff0c\u660e\u663e\u6bd4 4 \u4e2a\u8fdb\u7a0b\u8981\u5c11\u5f97\u591a\uff0c\u56e0\u800c\uff0c\u7cfb\u7edf\u7684 CPU \u5904\u4e8e\u4e25\u91cd\u8fc7\u8f7d\u72b6\u6001<\/em><\/p>\n\n\n\n
[root@m01 ~]# watch -d uptime\n19:11:07 up 2 days,  4:45,  3 users,  load average: 4.65, 2.65, 4.65\n<\/code><\/pre>\n\n\n\n
3.\u7136\u540e\uff0c\u518d\u8fd0\u884c pidstat \u6765\u770b\u4e00\u4e0b\u8fdb\u7a0b\u7684\u60c5\u51b5\uff1a<\/em><\/p>\n\n\n\n
# \u95f4\u9694 5 \u79d2\u540e\u8f93\u51fa\u4e00\u7ec4\u6570\u636e\n[root@m01 ~]# pidstat -u 5 1\n\u5e73\u5747\u65f6\u95f4:   UID       PID    %usr %system  %guest   %wait    %CPU   CPU  Command\n\u5e73\u5747\u65f6\u95f4:     0    130290   24.55    0.00    0.00   75.25   24.55     -  stress\n\u5e73\u5747\u65f6\u95f4:     0    130291   24.95    0.00    0.00   75.25   24.95     -  stress\n\u5e73\u5747\u65f6\u95f4:     0    130292   24.95    0.00    0.00   75.25   24.95     -  stress\n\u5e73\u5747\u65f6\u95f4:     0    130293   24.75    0.00    0.00   74.65   24.75     -  stress\n<\/code><\/pre>\n\n\n\n
\u53ef\u4ee5\u770b\u51fa\uff0c4 \u4e2a\u8fdb\u7a0b\u5728\u4e89\u62a2 1 \u4e2a CPU\uff0c\u6bcf\u4e2a\u8fdb\u7a0b\u7b49\u5f85 CPU \u7684\u65f6\u95f4\uff08\u4e5f\u5c31\u662f\u4ee3\u7801\u5757\u4e2d\u7684 %wait \u5217\uff09\u9ad8\u8fbe 75%\u3002\u8fd9\u4e9b\u8d85\u51fa CPU \u8ba1\u7b97\u80fd\u529b\u7684\u8fdb\u7a0b\uff0c\u6700\u7ec8\u5bfc\u81f4 CPU \u8fc7\u8f7d\u3002<\/em><\/p>\n\n\n\n
\u5206\u6790\u5b8c\u8fd9\u4e09\u4e2a\u6848\u4f8b\uff0c\u6211\u518d\u6765\u5f52\u7eb3\u4e00\u4e0b\u5e73\u5747\u8d1f\u8f7d\u4e0eCPU<\/em><\/strong>
\u5e73\u5747\u8d1f\u8f7d\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5feb\u901f\u67e5\u770b\u7cfb\u7edf\u6574\u4f53\u6027\u80fd\u7684\u624b\u6bb5\uff0c\u53cd\u6620\u4e86\u6574\u4f53\u7684\u8d1f\u8f7d\u60c5\u51b5\u3002\u4f46\u53ea\u770b\u5e73\u5747\u8d1f\u8f7d\u672c\u8eab\uff0c\u6211\u4eec\u5e76\u4e0d\u80fd\u76f4\u63a5\u53d1\u73b0\uff0c\u5230\u5e95\u662f\u54ea\u91cc\u51fa\u73b0\u4e86\u74f6\u9888\u3002\u6240\u4ee5\uff0c\u5728\u7406\u89e3\u5e73\u5747\u8d1f\u8f7d\u65f6\uff0c\u4e5f\u8981\u6ce8\u610f\uff1a
\u5e73\u5747\u8d1f\u8f7d\u9ad8\u6709\u53ef\u80fd\u662f CPU \u5bc6\u96c6\u578b\u8fdb\u7a0b\u5bfc\u81f4\u7684\uff1b
\u5e73\u5747\u8d1f\u8f7d\u9ad8\u5e76\u4e0d\u4e00\u5b9a\u4ee3\u8868 CPU \u4f7f\u7528\u7387\u9ad8\uff0c\u8fd8\u6709\u53ef\u80fd\u662f I\/O \u66f4\u7e41\u5fd9\u4e86\uff1b
\u5f53\u53d1\u73b0\u8d1f\u8f7d\u9ad8\u7684\u65f6\u5019\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 mpstat\u3001pidstat \u7b49\u5de5\u5177\uff0c\u8f85\u52a9\u5206\u6790\u8d1f\u8f7d\u7684\u6765\u6e90<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b59\u5bcc\u9633\uff0c \u6c5f\u6e56\u4eba\u79f0\u6ca1\u4eba\u79f0\u3002\u591a\u5e74\u4e92\u8054\u7f51\u8fd0\u7ef4\u5de5\u4f5c\u7ecf\u9a8c\uff0c\u66fe\u8d1f\u8d23\u8fc7\u5b59\u5e03\u65af\u5927\u89c4\u6a21\u96c6\u7fa4\u67b6\u6784\u81ea\u52a8\u5316\u8fd0\u7ef4\u7ba1\u7406\u5de5\u4f5c\u3002\u64c5\u957fWeb\u96c6 […]<\/p>\n","protected":false},"author":1,"featured_media":246,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"_links":{"self":[{"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=\/wp\/v2\/posts\/378"}],"collection":[{"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=378"}],"version-history":[{"count":9,"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=\/wp\/v2\/posts\/378\/revisions"}],"predecessor-version":[{"id":391,"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=\/wp\/v2\/posts\/378\/revisions\/391"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=\/wp\/v2\/media\/246"}],"wp:attachment":[{"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=378"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=378"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}