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Check the number of physical CPUs, cores, and logical CPUs on Linux

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Release： 2016-07-29 09:08:02

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When learning swoole, it is recommended that the number of worker processes opened is 1-4 times the number of CPU cores. So I learned how to check the number of CPU cores

# 查看物理CPU个数
cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l

# 查看每个物理CPU核数
cat /proc/cpuinfo| grep "cpu cores"| uniq

# 查看逻辑CPU个数
cat /proc/cpuinfo| grep "processor"| wc -l<br># 查看CPU信息（型号）<br>cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c

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The above introduces how to check the number of physical CPUs, cores, and logical CPUs in Linux, including the content. I hope it will be helpful to friends who are interested in PHP tutorials.

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cat cpu grep proc

source：php.cn

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