top命令
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执行top命令后按数字1,就显示所有CPU核心使用率，但是当CPU核心数太多的时候，这个方法无法显示% T( W5 p8 M& M5 {! f( r7 E0 w+ [
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top - 14:13:07 up 2:59, 1 user, load average: 0.00, 0.04, 0.01/ D/ W( [, M3 H5 C: q; `
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Tasks: 133 total, 1 running, 132 sleeping, 0 stopped, 0 zombie1 P; ~/ [6 |5 {- r4 J' M+ v/ z8 ] }
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Cpu0 : 0.1%us, 0.3%sy, 0.2%ni, 98.9%id, 0.5%wa, 0.0%hi, 0.0%si, 0.0%st1 K% J; i, u+ s- p7 U5 K
/ ~6 q% k% g8 k. ?9 l Z9 V4 b. ^ Cpu1 : 0.1%us, 0.4%sy, 0.3%ni, 98.7%id, 0.6%wa, 0.0%hi, 0.0%si, 0.0%st5 O6 I( ?! o1 V8 O% E: A$ J0 k
~3 b9 H& Q' _7 a9 A Mem: 1024984k total, 1001912k used, 23072k free, 45484k buffers- b* S7 {0 r: j
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Swap: 1052248k total, 0k used, 1052248k free, 749124k cached
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PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND' S! I1 u+ K: ? W. [5 G; R% t6 u7 W0 t
( F9 _& l7 y. } 506 oracle 16 0 1411m 17m 16m S 2.1 1.8 0:00.10 oracle: ^& A7 @! P5 F' X$ {
- e! x! ^" {% o) P1 q0 f4 x0 k 4833 root 15 0 90148 3396 2636 S 2.1 0.3 0:00.39 sshd
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. x: p) z, G& A; e 1 root 15 0 10368 680 572 S 0.0 0.1 0:00.59 init
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2 root RT -5 0 0 0 S 0.0 0.0 0:03.71 migration/02 l" y2 ^$ v3 [7 ^' q
$ Z; q+ B: B# H: W R& i; Y9 q 3 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
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0 R$ C7 ]$ Y" C* J! @ 4 root RT -5 0 0 0 S 0.0 0.0 0:03.71 migration/1
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5 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/1! W3 h& `* _2 A+ W
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6 root 10 -5 0 0 0 S 0.0 0.0 0:04.48 events/05 x" H- D& ?$ J& d9 X
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7 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 events/1
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5 T; L7 _/ b+ G/ ?1 s+ O W/ j7 X 8 root 10 -5 0 0 0 S 0.0 0.0 0:00.03 khelper
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17 root 10 -5 0 0 0 S 0.0 0.0 0:00.01 kthread: |) j" e0 n% T6 i+ M
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22 root 10 -5 0 0 0 S 0.0 0.0 0:00.03 kblockd/0 J9 P! a7 I3 v: N- X
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23 root 10 -5 0 0 0 S 0.0 0.0 0:00.04 kblockd/1
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2 c y0 d4 ?; X/ J 24 root 14 -5 0 0 0 S 0.0 0.0 0:00.00 kacpid. V/ ]) k8 b( X* p5 {
! ^2 A9 C9 X/ D% |8 {5 L, f 195 root 12 -5 0 0 0 S 0.0 0.0 0:00.00 cqueue/0( j; K0 N; u- g) S$ @
" N% W, k# V8 d; d9 N 196 root 12 -5 0 0 0 S 0.0 0.0 0:00.00 cqueue/1* `. D+ s8 ~& m7 [/ Y; p: J1 t
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199 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 khubd
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: g/ x: b! B1 ~4 }$ V 201 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kseriod( |/ s# ~' X# v, y6 `+ w. v
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二：sar命令
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我一般都是用这个命令查看所有CPU核心使用率的，因为我的服务器核心数有48个，top命令无法显示。* R2 L' c4 h) o w
9 \6 |: {! G/ Q [root@server2 ~]# sar -P ALL 1 10$ I8 F! Z6 p3 [ ?3 B6 X3 |
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Linux 2.6.18-274.el5 （server2.lanv.com） 07/06/2012
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& F( Y8 y6 n! I: x9 v# | 02:14:11 PM CPU %user %nice %system %iowait %steal %idle
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02:14:12 PM all 0.00 0.00 0.00 0.00 0.00 100.007 i5 z" u+ {' m! E" a8 X0 N7 y
+ ]: c* S# }9 `" i0 i 02:14:12 PM 0 0.00 0.00 0.00 0.00 0.00 100.00& R, C1 o* @: ^1 C/ O# B7 b% W' ]
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02:14:12 PM CPU %user %nice %system %iowait %steal %idle
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02:14:13 PM all 0.00 0.00 0.00 0.00 0.00 100.00
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02:14:13 PM 0 0.00 0.00 0.00 0.00 0.00 100.00
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02:14:13 PM 1 0.99 0.00 0.00 0.00 0.00 99.01
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: Z* S& Z5 V4 F% N$ }. \9 R" P6 B5 L 02:14:13 PM CPU %user %nice %system %iowait %steal %idle
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02:14:14 PM all 0.00 0.00 0.00 0.00 0.00 100.00
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02:14:14 PM 0 0.00 0.00 0.00 0.00 0.00 100.00
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# ~3 d& X3 I0 ^0 z$ } 02:14:14 PM 1 0.00 0.00 0.00 0.00 0.00 100.00 |
发表于 2012-8-4 12:07:07
