I have been trying to determine the number of cores in a system with Sparc T2 cpus.
These cpus hav 4,6 or 8 cores per cpu

psrinfo -pv | wc -l will return 32, this is the number of threads, if I divide 32 by 2 I get 16 !
Does this mean I have 4 4 core cpus or do I have 2 8 core cpus?
Am I missing something?

/Hogmaster

Great script. But if you have CPUs with different frequencies, then it will NOT work. For getting the Frequency, you’ve used the below command:

/usr/sbin/psrinfo -v| grep operate | sed -e “s/.*at //;s/,//” | head -1

This will result in:

$ /usr/sbin/psrinfo -v| grep operate | sed -e “s/.*at //;s/,//” | head -1
1200 MHz

However, when I check, I’ve got 8 CPUs – 4 with 1200 MHz and 4 others with 900 MHz

$ /usr/sbin/psrinfo -v| grep operate | sed -e “s/.*at //;s/,//”
1200 MHz
1200 MHz
1200 MHz
1200 MHz
900 MHz
900 MHz
900 MHz
900 MHz

You can perhaps use something like:

/usr/sbin/psrinfo -v| grep operate | sed -e “s/.*at //;s/,//” | uniq

or

/usr/sbin/psrinfo -v| grep operate | sed -e “s/.*at //;s/,//” | sort -u

using the above commands for frequency, I get the below output:

$ ./sunos_cpu_info
8 “UltraSPARC-III+ 1200 MHz 900 MHz”

Anyway, thanks a lot for your wonderful script (for both Linux & Solaris!)

Physical disks on sun solaris : psrinfo -p

Thanks alot for your great work! Anyone managed to differentiate the number of socket/core/threads on Sun CMT processors?

If you use a SMP kernel, you may be able to get information about the number of chips and the number of cores of each cpu chip using /proc/cpuinfo. Look at how I actually decode it in my script:

function enclose {
tr -s ” ” | sed -e “s/^/\”/; s/$/\”/; s/\”\ /\”/; s/\ \”/\”/”
}

function linux_hw_CPU {

typeset num=0
typeset name=”"
typeset cores=”"

name=”$(
cat /proc/cpuinfo | awk -F: ‘
/vendor_id/ { vendor=$2 }
/model name/ { model=$2 }
/cpu MHz/ {
if( model ~ “Hz” ) {speed=”"} else { speed=$2″ MHz” };
print vendor, model, speed; }
‘ | tail -1
)”

num=$(
if [ -r /proc/vmware/cpuinfo ]
then
awk ‘/pcpu/ { print NF-1 }’ /proc/vmware/cpuinfo
else
cat /proc/cpuinfo | grep processor| wc -l
fi

)

if grep -q “physical id” /proc/cpuinfo || grep “siblings” /proc/cpuinfo
then
chip_count=$( grep “physical id” /proc/cpuinfo | sort -u | wc -l )
chip_core=$( grep “siblings” /proc/cpuinfo | tail -1 | cut -d: -f2 )
cores=”($chip_count chips x $chip_core cores)”
fi

# Blades HP con
if [ -x /sbin/hpasmcli ]
then
chip_name=$( /sbin/hpasmcli -s “SHOW SERVER” | grep “Name” | head -1 | cut -d: -f2 )
chip_speed=$( /sbin/hpasmcli -s “SHOW SERVER” | grep “Speed” | head -1 | cut -d: -f2 )
chip_core=$( /sbin/hpasmcli -s “SHOW SERVER” | grep “Core” | head -1 | cut -d: -f2 )
fi

# ESX: mas info sobre logical/cores/packages
if [ -r /proc/vmware/sched/ncpus ]
then
cores=”($( echo $( cat /proc/vmware/sched/ncpus ) ))”
fi

# Linux Itanium IA64
if grep -q -i itanium /proc/cpuinfo
then
name=”$(
grep “vendor” /proc/cpuinfo | cut -d: -f2- | tail -1 ) $(
grep “arch ” /proc/cpuinfo | cut -d: -f2- | tail -1 ) $(
grep “family” /proc/cpuinfo | cut -d: -f2- | tail -1 ) $(
grep “cpu MHz” /proc/cpuinfo | cut -d: -f2- | cut -d. -f1 | tail -1 ) Mhz”

chip_count=$( grep “physical id” /proc/cpuinfo | sort -u | wc -l )
chip_core=$( grep “siblings” /proc/cpuinfo | tail -1 | cut -d: -f2 )
cores=”($chip_count chips x $chip_core cores)”
fi

echo $num $( echo “$name $cores” | enclose )
}

linux_hw_CPU

For example:
# linux_hw_CPU
8 “GenuineIntel Intel(R) Xeon(R) CPU E5345 @ 2.33GHz (2 chips x 4 cores)”

function linux_hw_CPU {
typeset num=0
typeset name=”"
typeset cores=”"

name=”$(
cat /proc/cpuinfo | awk -F: ‘
/vendor_id/ { vendor=$2 }
/model name/ { model=$2 }
/cpu MHz/ {
if( model ~ “Hz” ) {speed=”"} else { speed=$2″ MHz” };
print vendor, model, speed; }
‘ | tail -1
)”

num=$(
if [ -r /proc/vmware/cpuinfo ]
then
awk ‘/pcpu/ { print NF-1 }’ /proc/vmware/cpuinfo
else
cat /proc/cpuinfo | grep processor| wc -l
fi
)

# ESX: mas info sobre logical/cores/packages
if [ -r /proc/vmware/sched/ncpus ]
then
cores=$( echo $( cat /proc/vmware/sched/ncpus ) )
fi

echo $num $( echo “$name ($cores)” | enclose )
}

For example, in one of our ESX box, I get:

32 “GenuineIntel Intel(R) Xeon(TM) CPU 3.00GHz (32 logical 16 cores 8 packages)”

(ESX is nice, it gives me information about chip, cores and also logical (that is because hyperthreading is activates on that box).

A normal linux server (not ESX) would give something more simple like:

2 “GenuineIntel Pentium III (Coppermine) 696.417 MHz ()”

Hope it helps

That’s a great script… I might convert it into linux…