Linux CPU相關資訊檢視

linux 下檢視機器是cpu是幾核的

幾個cpu

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

每個cpu是幾核（假設cpu配置相同）

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

cat /proc/cpuinfo | grep processor

1. 檢視物理cpu的個數

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

2. 檢視邏輯cpu的個數

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

3. 檢視cpu是幾核

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

4. 檢視cpu的主頻

#cat /proc/cpuinfo |grep mhz|uniq

#cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c

8 intel(r) xeon(r) cpu e5410 @ 2.33ghz

(看到有8個邏輯cpu, 也知道了cpu型號)

#cat /proc/cpuinfo | grep physical | uniq -c

4 physical id : 0

4 physical id : 1

(說明實際上是兩顆4核的cpu)

#getconf long_bit

32(說明當前cpu執行在32bit模式下, 但不代表cpu不支援64bit)

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

8(結果大於0, 說明支援64bit計算. lm指long mode, 支援lm則是64bit)