示例
- 要查看哪些处理器可用（可能的 ProcessorNum 值），输入：
bindprocessor -q
对于具有四个处理器的系统，输出与以下内容相似：
可用的处理器是：0 1 2 3
要将进程 ID 为 14662 的进程 p1 绑定到处理器 1，可以使用命令：
-
要确保该进程已绑定到指定的处理器，可以使用下面的命令进行查看：
#ps -emo THREAD | grep p1
USER PID PPID TID ST CP PRI SC WCHAN F TT BND COMMAND
root 4460 5428 - A 0 60 7 f0145c10 240001 - - /usr/sbin/rpc.mountd
root 4710 5428 - A 0 60 4 * 240001 - - /usr/sbin/tftpd -n
root 14662 10566 - A 120 126 0 - 200001 pts/0 1 ./p1 |
取消进程的绑定：
- 查看上述命令的结果：
# ps -emo THREAD | grep p1
USER PID PPID TID ST CP PRI SC WCHAN F TT BND COMMAND
root 12672 10566 - A 1 60 1 50a05e84 200001 pts/0 - grep p1
root 14662 10566 - A 78 111 0 - 200001 pts/0 - ./p1
|
主题2：解释为什么bindprocessor -q看到的CPU个数会是prtconf看到的个数的两倍
就是涉及到一个smt（同步多线程）的技术，简单解释启用smt的话，一个程序执行的时候，可以在一个CPU上用两个线程跑。前提，机器是power5的硬件和5.3的系统，我在p550q上运行smtctl可以看到支持，但是在p630上看是不支持的，因为p630是power4+的处理器。
具体的看看英文吧，写的比较详细：
smtctl Command
Purpose
The smtctl command controls the enabling and disabling of processor
simultaneous multi-threading mode.
Syntax
smtctl [ -m off | on [ -w boot | now ]]
Description
This command is provided for privileged users and applications to
control utilization of processors with simultaneous multi-threading
support. The simultaneous multi-threading mode allows processors to
have thread level parallelism at the instruction level. This mode can
be enabled or disabled for all processors either immediately or on
subsequent boots of the system. This command controls the simultaneous
multi-threading options.
If no options are specified then the following simultaneous multi-
threading settings will be reported:
SMT Capability
Indicator that the physical processors are capable of simultaneous
multi-threading.
SMT Mode
Current runtime simultaneous multi-threading mode of disabled or
enabled.
SMT Boot Mode
Current boot time simultaneous multi-threading mode of disabled or
enabled.
SMT Threads
Number of simultaneous multi-threading threads per physical
processor.
SMT Bound
Indicator that the simultaneous multi-threading threads are bound
on the same physical processor.
下面是我在一台p550q上运行的结果：
szzy2:/ # smtctl
This system is SMT capable.
SMT is currently enabled.
SMT boot mode is not set.
SMT threads are bound to the same physical processor.
proc0 has 2 SMT threads.
Bind processor 0 is bound with proc0
Bind processor 1 is bound with proc0
proc2 has 2 SMT threads.
Bind processor 2 is bound with proc2
Bind processor 3 is bound with proc2
proc4 has 2 SMT threads.
Bind processor 4 is bound with proc4
Bind processor 5 is bound with proc4
proc6 has 2 SMT threads.
Bind processor 6 is bound with proc6
Bind processor 7 is bound with proc6
也可以通过查看CPU的属性来看smt是否开启和它的具体设置
szzy2:/ # lsattr -El proc0
frequency 1648350000 Processor Speed False
smt_enabled true Processor SMT enabled False
smt_threads 2 Processor SMT threads False
state enable Processor state False
type PowerPC_POWER5 Processor type False
同时有点小小的疑惑，为什么是proc0,2,4,6呢，为什么不是proc0,1,2,3呢，看下面，顺便把看CPU个数的命令都列一下：
看到实际CPU个数(4CPU）的命令：
prtconf
szzy2:/ # lsdev -Cc processor
proc0 Available 00-00 Processor
proc2 Available 00-02 Processor
proc4 Available 00-04 Processor
proc6 Available 00-06 Processor
szzy2:/ # lsdev |grep -i proc
proc0 Available 00-00 Processor
proc2 Available 00-02 Processor
proc4 Available 00-04 Processor
proc6 Available 00-06 Processor
看到的8个LCPU的命令：
bindprocessor -q
szzy2:/ # vmstat 1 1
System configuration: lcpu=8 mem=16000MB
kthr memory page faults cpu
----- ----------- ------------------------ ------------ -----------
r b avm fre re pi po fr sr cy in sy cs us sy id wa
1 0 2646988 299147 0 0 0 0 0 0 24 17808 13097 36 4 60 0
szzy2:/ # sar 1 1
AIX szzy2 3 5 0001E9F3D600 05/25/08
System configuration: lcpu=8 mode=Capped
22:29:58 %usr %sys %wio %idle physc
22:29:59 1 1 0 99 3.99
szzy2:/ # pmcycles -m
CPU 0 runs at 1648 MHz
CPU 1 runs at 1648 MHz
CPU 2 runs at 1648 MHz
CPU 3 runs at 1648 MHz
CPU 4 runs at 1648 MHz
CPU 5 runs at 1648 MHz
CPU 6 runs at 1648 MHz
CPU 7 runs at 1648 MHz
查看CPU频率的命令：
prtconf
lsattr -El proc0
pmcycles -m
