Linux系统--查看内存_shmem: 558292 kb

1）cat /proc/meminfo

MemTotal:       23142392 kB
MemFree:        19137312 kB
Buffers:           27428 kB
Cached:          1342860 kB
SwapCached:            0 kB
Active:           215396 kB
Inactive:        1222540 kB
Active(anon):      67784 kB
Inactive(anon):      436 kB
Active(file):     147612 kB
Inactive(file):  1222104 kB
Unevictable:          80 kB
Mlocked:              80 kB
SwapTotal:      16779884 kB
SwapFree:       16779884 kB
Dirty:                 0 kB
Writeback:             0 kB
AnonPages:         67744 kB
Mapped:            19040 kB
Shmem:               556 kB
Slab:              37220 kB
SReclaimable:      23292 kB
SUnreclaim:        13928 kB
KernelStack:        1512 kB
PageTables:         6564 kB
NFS_Unstable:         16 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    28351080 kB
Committed_AS:     258360 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      271920 kB
VmallocChunk:   34359463363 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:    26649252 kB
DirectMap2M:           0 kB

2）free -m   以M为单位

             total       used       free     shared    buffers     cached
Mem:         22599       3911      18688          0         26       1311
-/+ buffers/cache:       2573      20026
Swap:        16386          0      16386