是因为node4开启了大页内存导致的,关闭大页内存,重启主机后恢复。
使用如下命令可以查看内存使用情况
[root@cvknode4 ~]# cat /proc/meminfo
MemTotal: 1056232796 kB
MemFree: 418977704 kB
MemAvailable: 414518764 kB
Buffers: 96796 kB
Cached: 4814432 kB
SwapCached: 0 kB
Active: 59133392 kB
Inactive: 43061344 kB
Active(anon): 58746604 kB
Inactive(anon): 42183696 kB
Active(file): 386788 kB
Inactive(file): 877648 kB
Unevictable: 763684 kB
Mlocked: 763684 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 1060 kB
Writeback: 0 kB
AnonPages: 98039684 kB
Mapped: 547364 kB
Shmem: 3636472 kB
KReclaimable: 217124 kB
Slab: 790912 kB
SReclaimable: 217124 kB
SUnreclaim: 573788 kB
KernelStack: 62144 kB
PageTables: 306476 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 264399532 kB
Committed_AS: 195961280 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 1179748 kB
VmallocChunk: 0 kB
Percpu: 91200 kB
HardwareCorrupted: 0 kB
AnonHugePages: 87617536 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
FileHugePages: 0 kB
FilePmdMapped: 0 kB
CmaTotal: 0 kB
CmaFree: 0 kB
HugePages_Total: 503
HugePages_Free: 503
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 1048576 kB
Hugetlb: 527433728 kBDirectMap4k: 5406168 kB
DirectMap2M: 144185344 kB
DirectMap1G: 925892608 kB
[root@cvknode4 ~]#
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