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top中使用CPU或MEM排序，还是看不到我们想了解的进程的相关信息；3 S$ ?( D2 x5 l, O
这时就可以指定对某个或某些进程进行TOP信息显示；; g+ c- C7 D: p
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1、查看某个进程的信息) Z) A! n7 T4 p. \, _, x" X4 C l! L
例：mysqld的信息
2 ]! v5 W* d5 H: T(1)得到mysqld进程的pid! h# V1 Z6 [9 {8 x5 `
[root@6 ~]# pidof mysqld' u1 I0 d; Z# W, S0 O9 s% D( |1 g
21538- @7 K3 u7 M l/ k. W$ H- c, `( u
: O9 l' ]& a) h' L2 d+ }(2)top指定查看PID
: c; Z- v3 R! T; U6 c0 N[root@6 ~]# top -p 21538
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top - 09:15:06 up 30 days, 53 min, 3 users, load average: 0.07, 0.22, 0.23
# h2 R- h0 X* j$ t: ~5 U1 ~( nTasks: 1 total, 0 running, 1 sleeping, 0 stopped, 0 zombie
' \% u3 h, v, ]$ GCpu(s): 3.0%us, 6.9%sy, 0.2%ni, 89.4%id, 0.3%wa, 0.1%hi, 0.1%si, 0.0%st3 j5 I) t1 z- t
Mem: 1035140k total, 994888k used, 40252k free, 383072k buffers
5 U5 ]' W. Z+ s0 p7 Y4 n' n5 JSwap: 2048248k total, 80k used, 2048168k free, 237456k cached
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PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 8 W* S! X4 n ^, R0 k) h
21538 mysql 15 0 146m 21m 4372 S 0.0 2.1 3:03.84 mysqld2 o! _, Z6 f6 z- o* c
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2、查看某些进程的信息
% \* W4 c( Y# s9 v例：mysqld/httpd的信息# p2 ~0 M6 ~, `
(1)得到mysqld/httpd进程的pid
# z6 m) g' o5 o0 r5 h, f[root@6 ~]# pidof mysqld0 M! N$ g$ m4 {$ n, y# H, _( L
21538
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[root@6 ~]# pidof httpd
; r3 g1 ^9 h, U! }5 {: e2 N, W ?31117 31116 31115 31114
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(2)top指定查看PID3 N1 \ }) V. W
[root@6 ~]# top -p 21538,31117,31116,31115,31114
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top - 09:20:05 up 30 days, 58 min, 3 users, load average: 0.37, 0.24, 0.239 _+ n. W: b( A$ {, I0 w! i/ a' E
Tasks: 5 total, 0 running, 5 sleeping, 0 stopped, 0 zombie! b' H* I! b7 k$ k
Cpu(s): 3.0%us, 6.9%sy, 0.2%ni, 89.4%id, 0.3%wa, 0.1%hi, 0.1%si, 0.0%st# X( u, c, g/ E0 X7 L) [4 |4 ~
Mem: 1035140k total, 994364k used, 40776k free, 383404k buffers
/ c/ ?& Y9 D% B& L. F$ aSwap: 2048248k total, 80k used, 2048168k free, 237560k cached, x+ \- p8 K: s
0 I" d; _# C- R% W( [' [ PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND $ ~# }3 ?* k$ b# `- S" c
21538 mysql 15 0 146m 21m 4372 S 0.0 2.1 3:03.86 mysqld 1 r9 z; T9 G- ^7 d1 @
31117 apache 15 0 60036 8428 4668 S 0.0 0.8 0:00.48 httpd
- U* j+ D9 j4 p9 p+ D$ U0 x% c31116 apache 15 0 60308 9.9m 6288 S 0.0 1.0 0:00.48 httpd
/ q) u1 X2 {% c/ @31115 apache 15 0 60100 8552 4756 S 0.0 0.8 0:00.48 httpd 3 J2 H5 X; ?+ R4 E, K, S! o/ ~
31114 apache 15 0 59892 6452 3060 S 0.0 0.6 0:00.41 httpd 1 z0 m# f7 G" \3 Q
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发表于 2019-11-21 16:32:41