很高兴看到重启似乎有帮助！
事实证明它可能很有信息量。我将分享我的，一个规模小得多的系统。
但这里有一个想法，一个可能影响性能的内核设置，你是否启用了透明大页。我没有：
# cat /sys/kernel/mm/transparent_hugepage/enabled
always madvise [never]
请参阅 MKJ 的主观 Discourse 部署配置 获取建议！
这是我的 meminfo，在一个运行良好的小得多系统上：
# cat /proc/meminfo
MemTotal: 1009140 kB
MemFree: 91888 kB
MemAvailable: 88692 kB
Buffers: 7644 kB
Cached: 137040 kB
SwapCached: 144884 kB
Active: 418972 kB
Inactive: 380324 kB
Active(anon): 345300 kB
Inactive(anon): 345852 kB
Active(file): 73672 kB
Inactive(file): 34472 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 2097144 kB
SwapFree: 1049764 kB
Dirty: 400 kB
Writeback: 0 kB
AnonPages: 620688 kB
Mapped: 67192 kB
Shmem: 36536 kB
Slab: 67768 kB
SReclaimable: 27832 kB
SUnreclaim: 39936 kB
KernelStack: 3804 kB
PageTables: 14968 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 2601712 kB
Committed_AS: 3784772 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
CmaTotal: 0 kB
CmaFree: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 460652 kB
DirectMap2M: 587776 kB