linux命令之lsmem
1.lsmem介绍
linux命令lsmem是用来查看服务器内存的情况。在linux下，我们可以使用free -m、cat /proc/meminfo命令来查看内存，对于运维来说，lsmem命令了解即可
2.lsmem用法
lsmem [参数]
lsmem参数
参数 |
说明 |
-a |
列出每个单独的内存块，而不是组合具有相似属性的内存块 |
3.实例
3.1.查看服务器内存情况
命令：
lsmem -a
OR
lsmem
[root@rhel77 ~]# lsmem
RANGE SIZE STATE REMOVABLE BLOCK
0x0000000000000000-0x0000000007ffffff 128M online no 0
0x0000000008000000-0x000000002fffffff 640M online yes 1-5
0x0000000030000000-0x000000003fffffff 256M online no 6-7
0x0000000040000000-0x00000000afffffff 1.8G online yes 8-21
0x00000000b0000000-0x00000000bfffffff 256M online no 22-23
0x0000000100000000-0x0000000177ffffff 1.9G online yes 32-46
0x0000000178000000-0x000000017fffffff 128M online no 47
0x0000000180000000-0x0000000197ffffff 384M online yes 48-50
0x0000000198000000-0x00000001b7ffffff 512M online no 51-54
Memory block size: 128M
Total online memory: 5.9G
Total offline memory: 0B
[root@rhel77 ~]# lsmem -a
RANGE SIZE STATE REMOVABLE BLOCK
0x0000000000000000-0x0000000007ffffff 128M online no 0
0x0000000008000000-0x000000000fffffff 128M online yes 1
0x0000000010000000-0x0000000017ffffff 128M online yes 2
0x0000000018000000-0x000000001fffffff 128M online yes 3
0x0000000020000000-0x0000000027ffffff 128M online yes 4
0x0000000028000000-0x000000002fffffff 128M online yes 5
0x0000000030000000-0x0000000037ffffff 128M online no 6
0x0000000038000000-0x000000003fffffff 128M online no 7
0x0000000040000000-0x0000000047ffffff 128M online yes 8
0x0000000048000000-0x000000004fffffff 128M online yes 9
0x0000000050000000-0x0000000057ffffff 128M online yes 10
0x0000000058000000-0x000000005fffffff 128M online yes 11
0x0000000060000000-0x0000000067ffffff 128M online yes 12
0x0000000068000000-0x000000006fffffff 128M online yes 13
0x0000000070000000-0x0000000077ffffff 128M online yes 14
0x0000000078000000-0x000000007fffffff 128M online yes 15
0x0000000080000000-0x0000000087ffffff 128M online yes 16
0x0000000088000000-0x000000008fffffff 128M online yes 17
0x0000000090000000-0x0000000097ffffff 128M online yes 18
0x0000000098000000-0x000000009fffffff 128M online yes 19
0x00000000a0000000-0x00000000a7ffffff 128M online yes 20
0x00000000a8000000-0x00000000afffffff 128M online yes 21
0x00000000b0000000-0x00000000b7ffffff 128M online no 22
0x00000000b8000000-0x00000000bfffffff 128M online no 23
0x0000000100000000-0x0000000107ffffff 128M online yes 32
0x0000000108000000-0x000000010fffffff 128M online yes 33
0x0000000110000000-0x0000000117ffffff 128M online yes 34
0x0000000118000000-0x000000011fffffff 128M online yes 35
0x0000000120000000-0x0000000127ffffff 128M online yes 36
0x0000000128000000-0x000000012fffffff 128M online yes 37
0x0000000130000000-0x0000000137ffffff 128M online yes 38
0x0000000138000000-0x000000013fffffff 128M online yes 39
0x0000000140000000-0x0000000147ffffff 128M online yes 40
0x0000000148000000-0x000000014fffffff 128M online yes 41
0x0000000150000000-0x0000000157ffffff 128M online yes 42
0x0000000158000000-0x000000015fffffff 128M online yes 43
0x0000000160000000-0x0000000167ffffff 128M online yes 44
0x0000000168000000-0x000000016fffffff 128M online yes 45
0x0000000170000000-0x0000000177ffffff 128M online yes 46
0x0000000178000000-0x000000017fffffff 128M online no 47
0x0000000180000000-0x0000000187ffffff 128M online yes 48
0x0000000188000000-0x000000018fffffff 128M online yes 49
0x0000000190000000-0x0000000197ffffff 128M online yes 50
0x0000000198000000-0x000000019fffffff 128M online no 51
0x00000001a0000000-0x00000001a7ffffff 128M online no 52
0x00000001a8000000-0x00000001afffffff 128M online no 53
0x00000001b0000000-0x00000001b7ffffff 128M online no 54
Memory block size: 128M
Total online memory: 5.9G
Total offline memory: 0B
[root@rhel77 ~]#