numa

检查numa是否关闭，如果一个node说明是关闭的，如果是有两个node，node0 node1是开启的。操作系统层面有一个numa开关，bios层面也有一个numa开关。
oracle@xymesdb01:/home/oracle>numastat -m

Per-node system memory usage (in MBs):
Token SwapCached not in hash table.
Token FileHugePages not in hash table.
Token FilePmdMapped not in hash table.
Node 0 Total
--------------- ---------------
MemTotal 515091.23 515091.23
MemFree 115271.96 115271.96
MemUsed 399819.27 399819.27
Active 11771.43 11771.43
Inactive 126941.31 126941.31
Active(anon) 3871.11 3871.11
Inactive(anon) 14183.41 14183.41
Active(file) 7900.32 7900.32
Inactive(file) 112757.90 112757.90
Unevictable 413.49 413.49
Mlocked 413.49 413.49
Dirty 0.07 0.07
Writeback 0.02 0.02
FilePages 129901.98 129901.98
Mapped 1406.02 1406.02
AnonPages 9224.34 9224.34
Shmem 9174.62 9174.62
KernelStack 39.81 39.81
PageTables 381.90 381.90
NFS_Unstable 0.00 0.00
Bounce 0.00 0.00
WritebackTmp 0.00 0.00
Slab 17703.72 17703.72
SReclaimable 15593.94 15593.94
SUnreclaim 2109.78 2109.78
AnonHugePages 0.00 0.00
ShmemHugePages 0.00 0.00
ShmemPmdMapped 0.00 0.00
HugePages_Total 240000.00 240000.00
HugePages_Free 5026.00 5026.00
HugePages_Surp 0.00 0.00
KReclaimable 15593.94 15593.94
oracle@xymesdb01:/home/oracle>numactl --hardware
available: 1 nodes (0)
node 0 cpus: 0 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 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
node 0 size: 515091 MB
node 0 free: 115242 MB
node distances:
node 0
0: 10
oracle@xymesdb01:/home/oracle>