内存复制[root@EPMSDB tuned]# cat /proc/meminfo  MemTotal:        3882316 kB  MemFree:         1174264 kB  MemAvailable:    1084616 kB  Buffers:               0 kB  Cached:            67764 kB  SwapCached:            0 kB  Active:            51984 kB  Inactive:          56356 kB  Active(anon):      40888 kB  Inactive(anon):    16864 kB  Active(file):      11096 kB  Inactive(file):    39492 kB  Unevictable:           0 kB  Mlocked:               0 kB  SwapTotal:       2097148 kB  SwapFree:        2097148 kB  Dirty:                 0 kB  Writeback:             0 kB  AnonPages:         40540 kB  Mapped:            22772 kB  Shmem:             17176 kB  Slab:              25928 kB  SReclaimable:      10688 kB  SUnreclaim:        15240 kB  KernelStack:        1936 kB  PageTables:         3072 kB  NFS_Unstable:          0 kB  Bounce:                0 kB  WritebackTmp:          0 kB  CommitLimit:     4038304 kB  Committed_AS:     260036 kB  VmallocTotal:   34359738367 kB  VmallocUsed:      150720 kB  VmallocChunk:   34359341052 kB  HardwareCorrupted:     0 kB  AnonHugePages:      8192 kB  HugePages_Total:       0  HugePages_Free:        0  HugePages_Rsvd:        0  HugePages_Surp:        0  Hugepagesize:       2048 kB  DirectMap4k:       51136 kB  DirectMap2M:     4143104 kB  1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.31.32.33.34.35.36.37.38.39.40.41.42.43.44.