linux——檢視系統等資訊

linux檢視系統cpu資訊

cat /proc/cpuinfo 檢視系統cpu資訊
# 總核數=實體CPU個數X每顆實體CPU的核數
# 總邏輯CPU數=實體CPU個數X每顆實體CPU的核數X超線程數
# 檢視實體CPU個數
cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l
# 檢視每個實體CPU中core的個數(即核數)
cat /proc/cpuinfo| grep "cpu cores"| uniq
# 檢視邏輯CPU的個數
cat /proc/cpuinfo| grep "processor"| wc -l           

cat /proc/interrupts 顯示中斷

cat /proc/meminfo 校驗記憶體使用           

cat /proc/swaps 顯示哪些swap被使用

[hadoop@localhost ~]$ cat /proc/swaps
Filename Type Size Used Priority
/dev/sda2 partition 2097148 1070592 -1           

cat /proc/version 顯示核心的版本

[hadoop@localhost ~]$ cat /proc/version
Linux version 3.10.0-862.3.3.el7.x86_64 ([email protected]) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-28) (GCC) ) 
#1 SMP Fri Jun 15 04:15:27 UTC 2018           

cat /proc/net/dev 顯示網絡擴充卡及統計

cat /proc/mounts 顯示已加載的檔案系統

[hadoop@localhost ~]$ cat /proc/mounts
rootfs / rootfs rw 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
devtmpfs /dev devtmpfs rw,nosuid,size=482584k,nr_inodes=120646,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw,nosuid,nodev,mode=755 0 0
tmpfs /sys/fs/cgroup tmpfs ro,nosuid,nodev,noexec,mode=755 0 0
cgroup /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd 0 0
cgroup /sys/fs/cgroup/blkio cgroup rw,nosuid,nodev,noexec,relatime,blkio 0 0
/dev/sda3 / xfs rw,relatime,attr2,inode64,noquota 0 0
sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0
tmpfs /run/user/1002 tmpfs rw,nosuid,nodev,relatime,size=99796k,mode=700,uid=1002,gid=1002 0 0           

[hadoop@localhost etc]$ cat /proc/partitions所有裝置的所有分區

major minor #blocks name
8 0 20971520 sda
8 1 307200 sda1
8 2 2097152 sda2
8 3 18566144 sda3
7 0 104857600 loop0
7 1 2097152 loop1
253 0 104857600 dm-0           

lspci -tv 羅列 PCI 裝置

lsusb -tv 顯示 USB 裝置

[hadoop@localhost d4]$ lsusb -tv
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
|__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 2: Dev 3, If 0, Class=Hub, Driver=hub/7p, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M           

2022-9-21