我无法监控 RAM 的隐藏位置，它不是 buff/cached，而且我不确定是否理解 /proc/meminfo 数据
可以肯定的是，当我停止或尝试捕获进程时，我找不到超过 3-4 个消耗我 RAM 0.1% 的进程
我尝试重新启动服务器，它运行正常几个小时，然后在几秒钟内内存从 90% 空闲下降到这个
这是我的免费 -m 和 /proc/meminfo
提前致谢
$free -m
total used free shared buff/cache available
Mem: 3924 3569 205 5 150 160
Swap: 512 133 379
$cat /proc/meminfo
MemTotal: 4019180 kB
MemFree: 217848 kB
MemAvailable: 168264 kB
Buffers: 13024 kB
Cached: 106532 kB
SwapCached: 21440 kB
Active: 109704 kB
Inactive: 53776 kB
Active(anon): 19084 kB
Inactive(anon): 30604 kB
Active(file): 90620 kB
Inactive(file): 23172 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 525308 kB
SwapFree: 388992 kB
Dirty: 76 kB
Writeback: 0 kB
AnonPages: 25476 kB
Mapped: 17148 kB
Shmem: 5756 kB
Slab: 49972 kB
SReclaimable: 26380 kB
SUnreclaim: 23592 kB
KernelStack: 3484 kB
PageTables: 5576 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 771568 kB
Committed_AS: 404024 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
HugePages_Total: 1722
HugePages_Free: 1722
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 13248 kB
DirectMap2M: 4163584 kB
$df -h | grep tmpfs
udev devtmpfs 2.0G 0 2.0G 0% /dev
tmpfs tmpfs 393M 46M 347M 12% /run
tmpfs tmpfs 2.0G 48K 2.0G 1% /dev/shm
tmpfs tmpfs 5.0M 48K 5.0M 1% /run/lock
tmpfs tmpfs 2.0G 0 2.0G 0% /sys/fs/cgroup
$ipcs -m
------ Shared Memory Segments --------
key shmid owner perms bytes nattch status
0x00000000 0 zabbix 600 576 6 dest
0x00000000 32769 zabbix 600 365056 6 dest
提供更多信息，这是一个备份存储服务器，自从 4 天以来，当我们收到有关 ram 的警告时，备份无法传输到它。 veeam 错误为：“错误：套接字已被强制关闭。无法恢复连接。”
rkhunter 没有找到任何东西，但：
[10:07:58] Info: Starting test name 'os_specific'
[10:07:58] Performing Linux specific checks
[10:07:58] Checking loaded kernel modules [ Warning ]
[10:07:58] Warning: The modules file '/proc/modules' is missing.
[10:07:58] Info: Using modules pathname of '/lib/modules'
[10:07:58] Checking kernel module names [ Warning ]
[10:07:59] Warning: The kernel modules directory '/lib/modules' is missing or empty.
[10:08:26] Performing filesystem checks
[10:08:26] Info: SCAN_MODE_DEV set to 'THOROUGH'
[10:08:59] Checking /dev for suspicious file types [ Warning ]
[10:08:59] Warning: Suspicious file types found in /dev:
[10:08:59] /dev/shm/wx: ELF 64-bit LSB executable, x86-64, version 1 (GNU/Linux), statically linked, stripped