使用 Oracle Solaris 操作系统时，使用此过程激活或取消激活核心。您可以在应用程序正在运行时根据需要随时执行此操作。
开始之前
此任务需要 root 权限。
弹性计算需要 Intel Speed Step，可以在 BIOS 设置实用程序的 "Advanced - CPU Power Management Configuration" 屏幕中启用或禁用它。默认情况下，此设置处于启用状态。
以下示例显示了四插槽服务器上的输出：
# psrinfo -vp
The physical processor has 18 cores and 36 virtual processors (0-18 72-89)
continue conversion here...
The core has 2 virtual processors (0 90) Socket 0, core 0, VPs (0, 72)
The core has 2 virtual processors (1 91)
The core has 2 virtual processors (2 92)
The core has 2 virtual processors (3 93)
The core has 2 virtual processors (4 94)
The core has 2 virtual processors (5 95)
The core has 2 virtual processors (6 96)
The core has 2 virtual processors (7 97)
The core has 2 virtual processors (8 98)
The core has 2 virtual processors (9 99)
The core has 2 virtual processors (10 100)
The core has 2 virtual processors (11 101)
The core has 2 virtual processors (12 102)
The core has 2 virtual processors (13 103)
The core has 2 virtual processors (14 104)
The core has 2 virtual processors (15 105)
The core has 2 virtual processors (16 106)
The core has 2 virtual processors (17 107)
Socket 0, core 14, VPs (14, 74)
x86 (GenuineIntel 306E7 family 6 model 62 step 7 clock 2793 MHz)
Intel(r) Xeon(r) CPU E7-8895 v3 @ 2.60GHz
... To conserve space, physical processors 1 and 2 are not shown here
The physical processor has 18 cores and 36 virtual processors (72-89 105-119)
The core has 2 virtual processors (72 144) Socket 3, core 0, VPs (72, 144)
The core has 2 virtual processors (73 145)
The core has 2 virtual processors (74 146)
The core has 2 virtual processors (75 147)
The core has 2 virtual processors (76 148)
The core has 2 virtual processors (77 149)
The core has 2 virtual processors (78 150)
The core has 2 virtual processors (79 151)
The core has 2 virtual processors (80 152)
The core has 2 virtual processors (81 153)
The core has 2 virtual processors (82 154)
The core has 2 virtual processors (83 155)
The core has 2 virtual processors (84 156)
The core has 2 virtual processors (85 157)
The core has 2 virtual processors (86 158)
The core has 2 virtual processors (87 159)
The core has 2 virtual processors (88 160)
The core has 2 virtual processors (89 161) Socket 3, core 15 VPs (89, 161)
x86 (GenuineIntel 306E7 family 6 model 62 step 7 clock 2793 MHz)
Intel(r) Xeon(r) CPU E7-8895 v3 @ 2.60GHz
要获取核心编号，请将第一个虚拟处理器编号除以 18。
商为插槽编号。
余数为核心编号。
要取消激活核心，请使用 psradm -f 取消激活各个虚拟处理器。
要在启用超线程时取消激活某个核心，您必须取消激活与该目标核心关联的两个虚拟处理器。
例如：
psradm -f 71 143 取消激活虚拟处理器 71 和 143，从而将取消激活核心 71。
要激活核心和虚拟处理器，请使用 psradm -n 命令。
激活与某个核心关联的任一虚拟处理器将激活该核心。
psradm -n 71 143 激活与核心 71 关联的两个虚拟处理器。
另请参见