Originally posted by: SystemAdmin

Hi,

How do we know the number of processors in an AIX system?

TIA
#AIX-Forum

Originally posted by: nh4aix

Hello, this is not a cut and dry answer... Why do you need to know?

The "lparstat -i" is probably your best bet... see the man page:
http://publib.boulder.ibm.com/infocenter/pseries/v5r3/topic/com.ibm.aix.cmds/doc/aixcmds3/lparstat.htm?resultof=%22%6c%70%61%72%73%74%61%74%22%20

Hope that helps.

Joe
#AIX-Forum

Originally posted by: SystemAdmin

lsdev -Cc processor will show the number of physical processors (or virtual processors in a shared processor LPAR.

1. lsdev -Cc processor

proc0 Available 00-00 Processor
proc2 Available 00-02 Processor
SMT thread processors are seen with bindprocessor

1. bindprocessor -q

The available processors are: 0 1 2 3

lparstat -i will show the virtual and logical processors.

1. lparstat -i | grep CPU

Online Virtual CPUs : 2
Maximum Virtual CPUs : 15
Minimum Virtual CPUs : 1
Maximum Physical CPUs in system : 2
Active Physical CPUs in system : 2
Active CPUs in Pool : 2
Physical CPU Percentage : 25.00%
topas -L shows logical processors,
mpstat shows virtual

1. lsattr -El proc0

frequency 1498500000 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

1. lscfg -v | grep -i proc

Model Implementation: Multiple Processor, PCI bus
proc0 Processor
proc2 Processor

1. prtconf | pg

System Model: IBM,9111-520
Machine Serial Number: 10EE6FE
Processor Type: PowerPC_POWER5
Number Of Processors: 2
Processor Clock Speed: 1499 MHz
CPU Type: 64-bit
Kernel Type: 64-bit

And many more.
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