CentOS 6.4 设备管理之CPU

 

 

Netkiller CentOS Linux 手札

Redhat, CentOS and Scientific Linux

Mr. Neo Chan, 陈景峰(BG7NYT)

中国广东省深圳市宝安区龙华镇溪山美地
518109
+86 13113668890
+86 755 29812080
<[email protected]>

$Id: book.xml 451 2012-08-13 09:38:29Z netkiller $

版权 © 2009, 2010, 2011, 2012 Neo Chan

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文档出处: http://netkiller.sourceforge.net http://netkiller.github.com

 

$Date: 2012-08-13 17:38:29 +0800 (Mon, 13 Aug 2012) $

我的系列文档

 

Netkiller Architect 手札	Netkiller Developer 手札	Netkiller Testing 手札	Netkiller Cryptography 手札	Netkiller Version 手札
Netkiller Linux 手札	Netkiller Debian 手札	Netkiller CentOS 手札	Netkiller FreeBSD 手札	Netkiller Security 手札
Netkiller Web 手札	Netkiller Monitoring 手札	Netkiller Storage 手札	Netkiller Mail 手札	Netkiller Shell 手札
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Netkiller Installation 手札	Netkiller Cisco IOS 手札	Netkiller Intranet 手札	Netkiller Multimedia 手札	Netkiller Docbook 手札
Netkiller Management 手札

 

第 22 章 设备管理

1. CPU 资源管理

1.1. lscpu - display information about the CPU architecture

查看CPU信息

# lscpu
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                1
On-line CPU(s) list:   0
Thread(s) per core:    1
Core(s) per socket:    1
Socket(s):             1
NUMA node(s):          1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 13
Stepping:              3
CPU MHz:               2400.084
BogoMIPS:              4800.16
Hypervisor vendor:     KVM
Virtualization type:   full
L1d cache:             32K
L1i cache:             32K
L2 cache:              4096K
NUMA node0 CPU(s):     0
			

1.2. chcpu - configure CPUs

禁用谋个CPU(含超线程)

# chcpu -d 3
CPU 3 disabled

# lscpu -c --extended
CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE
3   -    -      -    :::           no

# lscpu -b --extended
CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE
0   0    0      0    0:0:0:0       yes
1   0    0      1    1:1:1:0       yes
2   0    0      2    2:2:2:0       yes
4   0    1      3    3:3:3:1       yes
5   0    1      4    4:4:4:1       yes
6   0    1      5    5:5:5:1       yes
7   0    1      6    6:6:6:1       yes

# lscpu --all --extended
CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE
0   0    0      0    0:0:0:0       yes
1   0    0      1    1:1:1:0       yes
2   0    0      2    2:2:2:0       yes
3   -    -      -    :::           no
4   0    1      3    3:3:3:1       yes
5   0    1      4    4:4:4:1       yes
6   0    1      5    5:5:5:1       yes
7   0    1      6    6:6:6:1       yes

# chcpu -d 3
CPU 3 is already disabled

# chcpu -d 1
CPU 1 disabled

# chcpu -d 3
CPU 3 disabled

# chcpu -d 5
CPU 5 disabled

# chcpu -d 7
CPU 7 disabled

# lscpu --all --extended
CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE
0   0    0      0    0:0:0:0       yes
1   -    -      -    :::           no
2   0    0      1    1:1:1:0       yes
3   -    -      -    :::           no
4   0    1      2    2:2:2:1       yes
5   -    -      -    :::           no
6   0    1      3    3:3:3:1       yes
7   -    -      -    :::           no
			

启用谋个CPU

# chcpu -e 3
CPU 3 enabled

# lscpu --all --extended
CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE
0   0    0      0    0:0:0:0       yes
1   0    0      1    1:1:1:0       yes
2   0    0      2    2:2:2:0       yes
3   0    0      3    3:3:3:0       yes
4   0    1      4    4:4:4:1       yes
5   0    1      5    5:5:5:1       yes
6   0    1      6    6:6:6:1       yes
7   0    1      7    7:7:7:1       yes
			

0 号 CPU不允许禁用

# lscpu --all --extended
CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE
0   0    0      0    0:0:0:0       yes
1   -    -      -    :::           no
2   -    -      -    :::           no
3   -    -      -    :::           no
4   -    -      -    :::           no
5   -    -      -    :::           no
6   -    -      -    :::           no
7   -    -      -    :::           no

# chcpu -d 0
CPU 0 is not hot pluggable
			

1号处于启用状态，0号仍然不能禁用

# lscpu --all --extended
CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE
0   0    0      0    0:0:0:0       yes
1   0    0      1    1:1:1:0       yes
2   -    -      -    :::           no
3   -    -      -    :::           no
4   -    -      -    :::           no
5   -    -      -    :::           no
6   -    -      -    :::           no
7   -    -      -    :::           no

# chcpu -d 0
CPU 0 is not hot pluggable

 

 

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