Check how many cores the CPU has under Linux

Check how many cores the CPU has under Linux

Check how many CPUs there are

more /proc/cpuinfo |grep "physical id"|uniq|wc -l

How many cores does each cpu have? (Assuming the CPU configuration is the same)

more /proc/cpuinfo |grep "physical id"|grep "0"|wc -l
cat /proc/cpuinfo | grep processor

1. Check the number of physical CPUs

#cat /proc/cpuinfo |grep "physical id"|sort |uniq|wc -l

2. Check the number of logical CPUs

#cat /proc/cpuinfo |grep "processor"|wc -l

3 . Check the number of cores of the CPU

#cat /proc/cpuinfo |grep "cores"|uniq

4. Check the main frequency of the CPU

#cat /proc/cpuinfo |grep MHz|uniq
# uname -a
Linux euis1 2.6.9-55.ELsmp #1 SMP Fri Apr 20 17:03:35 EDT 2007 i686 i686 i386 GNU/Linux

(View the current operating system kernel information)

# cat /etc/issue | grep Linux
Red Hat Enterprise Linux AS release 4 (Nahant Update 5)

(Check the current operating system release version information)

# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
8 Intel(R) Xeon(R) CPU E5410 @ 2.33GHz

(See that there are 8 logical CPUs, and also know the CPU model)

# cat /proc/cpuinfo | grep physical | uniq -c
4 physical id : 0
4 physical id : 1

(Indicate that there are actually two 4-core CPUs )

# getconf LONG_BIT
32

(Indicates that the current CPU is running in 32bit mode, but it does not mean that the CPU does not support 64bit)

# cat /proc/cpuinfo | grep flags | grep ' lm ' | wc -l
8

(The result is greater than 0, indicating that 64bit calculation is supported. lm refers to long mode, lm is supported It is 64bit)

Recommended: "linux tutorial"

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