shell获取CPU数

legone2008

请教一个SHELL程序，如何获取CPU数呢？
那么双核的CPU算几个CPU呢？
谢谢！

yddll

lsdev -Cc processor|wc -l

legone2008

那双核算几个CPU呢？？
还请教一个，如果知道ORACEL用户名密码以及远程服务名，如何写shell程序来测试连接数据库呢。
也就是测试用户名和密码是否正确？？谢谢

fck

算两个cpu

diyxyj

从AIX 5.3起，对于power5的机器，系统引入了SMT（Simultaneous multi-threading）的功能，其允许两个处理线程在同一颗处理器上运行，对操作系统而言，一颗物理处理器逻辑上会成为两个处理单元（逻辑处理器）。也就是说，在SMT功能启用的情况下，逻辑cpu个数是物理cpu个数的两倍，而在SMT功能禁用的情况下，逻辑cpu个数与物理cpu个数相等。

下面我们介绍如何通过各种命令检查系统中的物理cpu和逻辑cpu的个数。

1. smtctl
# 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

可以看到，该系统具有SMT能力且当前SMT功能已启用。4个物理cpu对应着8个逻辑cpu。


2. bindprocessor
# bindprocessor -q
The available processors are: 0 1 2 3 4 5 6 7

可以看到可用逻辑cpu个数是8个（0-7）。

3. prtconf
# prtconf
System Model: IBM,9131-52A
Machine Serial Number: 0677A5G
Processor Type: PowerPC_POWER5
Number Of Processors: 4 ==》物理cpu有4个
Processor Clock Speed: 1648 MHz
CPU Type: 64-bit
Kernel Type: 64-bit
LPAR Info: 1 06-77A5G

4.lsdev
# lsdev -Cc processor
proc0 Available 00-00 Processor
proc2 Available 00-02 Processor
proc4 Available 00-04 Processor
proc6 Available 00-06 Processor

可以看到系统中有4个物理cpu。

5.vmstat
# vmstat

System configuration: lcpu=8 mem=7936MB

kthr memory page faults cpu
----- ----------- ------------------------ ------------ -----------
r b avm fre re pi po fr sr cy in sy cs us sy id wa
1 1 428238 41599 0 0 0 13 25 0 40 1639 182 0 0 99

可以看到系统中有8个逻辑cpu。

chalylau

原帖由 diyxyj 于 2008-10-31 22:38 发表
下面我们介绍如何通过各种命令检查系统中的物理cpu和逻辑cpu的个数。

1. smtctl
# 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

可以看到，该系统具有SMT能力且当前SMT功能已启用。4个物理cpu对应着8个逻辑cpu。


2. bindprocessor
# bindprocessor -q
The available processors are: 0 1 2 3 4 5 6 7

可以看到可用逻辑cpu个数是8个（0-7）。

3. prtconf
# prtconf
System Model: IBM,9131-52A
Machine Serial Number: 0677A5G
Processor Type: PowerPC_POWER5
Number Of Processors: 4 ==》物理cpu有4个
Processor Clock Speed: 1648 MHz
CPU Type: 64-bit
Kernel Type: 64-bit
LPAR Info: 1 06-77A5G

4.lsdev
# lsdev -Cc processor
proc0 Available 00-00 Processor
proc2 Available 00-02 Processor
proc4 Available 00-04 Processor
proc6 Available 00-06 Processor

可以看到系统中有4个物理cpu。

5.vmstat
# vmstat

System configuration: lcpu=8 mem=7936MB

kthr memory page faults cpu
----- ----------- ------------------------ ------------ -----------
r b avm fre re pi po fr sr cy in sy cs us sy id wa
1 1 428238 41599 0 0 0 13 25 0 40 1639 182 0 0 99

可以看到系统中有8个逻辑cpu。

很全啊

yefeng602

lsdev -C |grep proc