Uniprocessor or multiprocessor

Question

On unix, how do I know if a system is multiprocessor or single processor?

Answer 1

Several times we must answer our own question :)

On Solaris, run the command

/usr/sbin/psrinfo -v|grep "Status of processor"|wc -l

On AIX, run the command

lsdev -C|grep Process|wc -l

On HP-UX, run the following commands (superuser privilege required):

P=`echo processor_count/D | adb -k /stand/vmunix /dev/mem |tail -1|awk '{print $2}'` echo "The number of processors on `hostname` = $P"

In Tru64, run the command

 /usr/sbin/psrinfo -v|grep "Status of processor"|wc -l

Answer 2

What about

cat /proc/cpuinfo | grep -i 'processor' | wc -l

Or even

 dmesg | grep -i cpu

Make sure to “release x processors” in the last

Answer 3

, Unix, Linux . : http://www.howtogeek.com/howto/ubuntu/display-number-of-processors-on-linux/