POiSON WORLD

# psrinfo -p
2

# psrinfo -pv
The physical processor has 64 virtual processors (0-63)
 UltraSPARC-T2+ (cpuid 0 clock 1165 MHz)
The physical processor has 64 virtual processors (64-127)
 UltraSPARC-T2+ (cpuid 64 clock 1165 MHz)
 

# psrinfo -v | more
Status of virtual processor 0 as of: 08/12/2009 12:01:00
 on-line since 08/08/2009 06:03:02.
 The sparcv9 processor operates at 1165 MHz,
 and has a sparcv9 floating point processor.
Status of virtual processor 1 as of: 08/12/2009 12:01:00
 on-line since 08/08/2009 06:03:05.
 The sparcv9 processor operates at 1165 MHz,
 and has a sparcv9 floating point processor.
Status of virtual processor 2 as of: 08/12/2009 12:01:00
 on-line since 08/08/2009 06:03:05.
 The sparcv9 processor operates at 1165 MHz,
 and has a sparcv9 floating point processor.
.........



Finding cores
To find total number of cores across all the CPUs :

# kstat cpu_info|grep core_id|sort -u|wc -l
 16
 
 
 

 
 
Now to find number of core per CPU simply do the math : total number of cores / total number of physical CPUs

Another way of gathering CPU related info is using the prtdiag command :

# prtdiag -v | more
System Configuration: Oracle Corporation sun4v SPARC T2+
 Memory size: 65536 Megabytes
 
 ================================ Virtual CPUs ================================
 
 
 CPU ID Frequency Implementation Status
 ------ --------- ---------------------- -------
 0 1400 MHz SPARC-T2+ on-line 
 1 1400 MHz SPARC-T2+ on-line 
 2 1400 MHz SPARC-T2+ on-line 
 3 1400 MHz SPARC-T2+ on-line 
 4 1400 MHz SPARC-T2+ on-line 
 5 1400 MHz SPARC-T2+ on-line 
 6 1400 MHz SPARC-T2+ on-line 
 7 1400 MHz SPARC-T2+ on-line 
 8 1400 MHz SPARC-T2+ on-line 
 9 1400 MHz SPARC-T2+ on-line 
 10 1400 MHz SPARC-T2+ on-line 
 11 1400 MHz SPARC-T2+ on-line 
 12 1400 MHz SPARC-T2+ on-line 
 13 1400 MHz SPARC-T2+ on-line 
 14 1400 MHz SPARC-T2+ on-line 
 15 1400 MHz SPARC-T2+ on-line 
 
 ....
 
 
 
 
Gathering Memory information
Getting memory information is trivial. use the prtconf command and grem for Memory :

# prtconf | grep Memory
Memory size: 65536 Megabytes


We can also use the prtdiag command to find the memory in the system :

# prtdiag -v | grep Memory
 Memory size: 65536 Megabytes
 
 
Finding CPU information on T-series hardware with LDOMs
If you have LDOMs installed on the T-series hardware tyhat you have, above commands may not give you the correct values. Use the “ldm list-devices -a” command to list core, virtual CPUs (VCPUs) and resource assignments.

# ldm list-devices -a
CORE ID %FREE CPUSET
 0 12 (0, 1, 2, 3, 4, 5, 6, 7)
 1 0 (8, 9, 10, 11, 12, 13, 14, 15)
 2 0 (16, 17, 18, 19, 20, 21, 22, 23)
 3 0 (24, 25, 26, 27, 28, 29, 30, 31)
 4 0 (32, 33, 34, 35, 36, 37, 38, 39)
 5 0 (40, 41, 42, 43, 44, 45, 46, 47)
 6 0 (48, 49, 50, 51, 52, 53, 54, 55)
 7 0 (56, 57, 58, 59, 60, 61, 62, 63)
 8 0 (64, 65, 66, 67, 68, 69, 70, 71)
 9 0 (72, 73, 74, 75, 76, 77, 78, 79)
 10 0 (80, 81, 82, 83, 84, 85, 86, 87)
 11 0 (88, 89, 90, 91, 92, 93, 94, 95)
 12 0 (96, 97, 98, 99, 100, 101, 102, 103)
 13 0 (104, 105, 106, 107, 108, 109, 110, 111)
 14 0 (112, 113, 114, 115, 116, 117, 118, 119)
 15 0 (120, 121, 122, 123, 124, 125, 126, 127)
 16 0 (128, 129, 130, 131, 132, 133, 134, 135)
...........................


Number of physical cpu:
psrinfo -p


Number of cores:
kstat cpu_info|grep core_id|sort -u|wc -l

Number of threads:
psrinfo -pv
 
# echo "`psrinfo -p` socket(s)"
2 socket(s)

# echo "`kstat -m cpu_info|grep -w core_id|uniq|wc -l` core(s) "
8 core(s)

# echo "`psrinfo|wc -l` logical (virtual) processor(s)" 
64 logical (virtual) processor(s)