Linux（查看服务cpu核数和内存）

linux服务器中最重要的两个配置是CPU和内存。那么怎么开始查看CPU核数和内存，以及使用情况，是日常运维中使用最多的操作。

查看linux服务器cpu最简单的命令是 cat /proc/cpuinfo

查看linux服务器cpu最简单的命令是 lscpu

查看linux服务器内存

cat /proc/meminfo

查看linux服务器内存最简单的命令： free -h

lscpu信息

[root@tXX-XXX-app logs]# lscpu
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                4
On-line CPU(s) list:   0-3
Thread(s) per core:    1
Core(s) per socket:    4
Socket(s):             1
NUMA node(s):          1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 85
Model name:            Intel(R) Xeon(R) Platinum 8255C CPU @ 2.50GHz
Stepping:              5
CPU MHz:               2494.140
BogoMIPS:              4988.28
Hypervisor vendor:     KVM
Virtualization type:   full
L1d cache:             32K
L1i cache:             32K
L2 cache:              4096K
L3 cache:              36608K
NUMA node0 CPU(s):     0-3

可以看出操作系统的架构是x86 64位的操作系统。

CPU 操作模型支持32位 和 64位

byte Order 为 Little Endian

cpu核数为 4核

CPU主频为2.50GHZ

CPU缓存为4级缓存，分别为32k 32k 4096K 36608K

free -h 内存信息

[root@tXX-XXX-app logs]# free  -h
              total        used        free      shared  buff/cache   available
Mem:            15G        6.2G        266M        1.1M        8.7G        8.7G
Swap:            0B          0B          0B

总内存 15G 已用 6.2G 可用8.7G

磁盘信息 du -h /home 查看home目录各文件夹占用磁盘空间大小。

[root@tXX-XX-app logs]# du -h  /home
44M     /home/docker/apps/eureka
8.0K    /home/docker/apps/nginx/conf.d/bak_20230227
16K     /home/docker/apps/nginx/conf.d
8.0K    /home/docker/apps/nginx/conf/bak_20230227
24K     /home/docker/apps/nginx/conf
29M     /home/docker/apps/nginx/www/ctg-member/ctg-member/assets
30M     /home/docker/apps/nginx/www/ctg-member/ctg-member
30M     /home/docker/apps/nginx/www/ctg-member
30M     /home/docker/apps/nginx/www
12G     /home/docker/apps/nginx/logs
20K     /home/docker/apps/nginx/cert
12G     /home/docker/apps/nginx
12G     /home/docker/apps
16K     /home/docker/script/apollo
36K     /home/docker/script
12G     /home/docker
392M    /home/project/ctg-member-plat/jar
8.1M    /home/project/ctg-member-plat/logs
16K     /home/project/ctg-member-plat/script/subscript
28K     /home/project/ctg-member-plat/script
400M    /home/project/ctg-member-plat
52M     /home/project/sso/jar
56K     /home/project/sso/logs
8.0K    /home/project/sso/script
52M     /home/project/sso
451M    /home/project
12K     /home/redis/myredis/data/appendonlydir
16K     /home/redis/myredis/data
24K     /home/redis/myredis
28K     /home/redis
67M     /home/tingyun
13G     /home