我正在使用centos。 当我运行命令free -m然后它显示在下面：
total used free shared buffers cached
Mem: 2048 373 1674 10 0 147
-/+ buffers/cache: 225 1822
Swap: 0 0 0
我已运行命令“Top”并获得以下结果：
top - 07:08:01 up 16:09, 3 users, load average: 0.00, 0.00, 0.00
Tasks: 39 total, 1 running, 38 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 2097152k total, 381024k used, 1716128k free, 0k buffers
Swap: 0k total, 0k used, 0k free, 150200k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1 root 20 0 19236 1452 1212 S 0.0 0.1 0:00.02 init
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd/23354
3 root 20 0 0 0 0 S 0.0 0.0 0:00.00 khelper/23354
147 root 16 -4 10644 668 400 S 0.0 0.0 0:00.00 udevd
453 root 20 0 179m 1512 1056 S 0.0 0.1 0:00.27 rsyslogd
489 root 20 0 66692 1296 536 S 0.0 0.1 0:00.03 sshd
497 root 20 0 22192 972 716 S 0.0 0.0 0:00.00 xinetd
658 root 20 0 66876 1028 312 S 0.0 0.0 0:00.00 saslauthd
659 root 20 0 66876 764 48 S 0.0 0.0 0:00.00 saslauthd
731 root 20 0 114m 1260 620 S 0.0 0.1 0:00.24 crond
835 ossecm 20 0 10512 492 312 S 0.0 0.0 0:00.32 ossec-maild
839 root 20 0 13088 960 712 S 0.0 0.0 0:00.00 ossec-execd
843 ossec 20 0 12780 2380 620 S 0.0 0.1 0:10.15 ossec-analysisd
847 root 20 0 4200 444 304 S 0.0 0.0 0:00.84 ossec-logcollec
858 root 20 0 5004 1484 468 S 0.0 0.1 0:07.06 ossec-syscheckd
862 ossec 20 0 6388 624 372 S 0.0 0.0 0:00.03 ossec-monitord
870 root 20 0 92420 21m 1620 S 0.0 1.0 0:01.21 miniserv.pl
4363 root 20 0 96336 4448 3464 S 0.0 0.2 0:00.10 sshd
4365 root 20 0 105m 2024 1532 S 0.0 0.1 0:00.03 bash
4615 root 20 0 96776 4936 3460 S 0.0 0.2 0:00.61 sshd
4617 root 20 0 105m 2052 1548 S 0.0 0.1 0:00.20 bash
4674 root 20 0 96336 4452 3460 S 0.0 0.2 0:00.22 sshd
4676 root 20 0 105m 2012 1532 S 0.0 0.1 0:00.06 bash
7494 root 20 0 96336 4404 3428 S 0.0 0.2 0:00.03 sshd
7496 root 20 0 57712 2704 2028 S 0.0 0.1 0:00.01 sftp-server
7719 root 20 0 83116 2700 836 S 0.0 0.1 0:00.10 sendmail
7728 smmsp 20 0 78692 2128 636 S 0.0 0.1 0:00.00 sendmail
7742 root 20 0 402m 14m 7772 S 0.0 0.7 0:00.13 httpd
7744 asterisk 20 0 502m 22m 10m S 0.0 1.1 0:00.11 httpd
7938 root 20 0 105m 756 520 S 0.0 0.0 0:00.00 safe_asterisk
7940 asterisk 20 0 3157m 26m 8508 S 0.0 1.3 0:07.14 asterisk
8066 root 20 0 105m 1568 1304 S 0.0 0.1 0:00.01 mysqld_safe
8168 mysql 20 0 499m 21m 6472 S 0.0 1.1 0:01.44 mysqld
8607 asterisk 20 0 402m 8288 1404 S 0.0 0.4 0:00.00 httpd
8608 asterisk 20 0 402m 8288 1404 S 0.0 0.4 0:00.00 httpd
8611 asterisk 20 0 402m 8284 1400 S 0.0 0.4 0:00.00 httpd
8615 asterisk 20 0 402m 8296 1412 S 0.0 0.4 0:00.00 httpd
即使我试图通过禁用服务星号，httpd，sendmail，mysqld仍然显示100％的CPU使用率。
有谁知道我怎样才能检查出这么多CPU使用的实际内容是什么？
答案 0 :(得分：1)
顶部的CPU使用率表示：
Cpu(s): 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
您的CPU 100％空闲。这是解释：
us: user cpu time (or) % CPU time spent in user space
sy: system cpu time (or) % CPU time spent in kernel space
ni: user nice cpu time (or) % CPU time spent on low priority processes
id: idle cpu time (or) % CPU time spent idle
wa: io wait cpu time (or) % CPU time spent in wait (on disk)
hi: hardware irq (or) % CPU time spent servicing/handling hardware interrupts
si: software irq (or) % CPU time spent servicing/handling software interrupts
st: steal time - - % CPU time in involuntary wait by virtual cpu while hypervisor is servicing another processor (or) % CPU time stolen from a virtual machine