There is something wrong with linux memory.

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Hello, prawns!

   free -m:

topfree
nmonCommit_ASActive
================================================================
/proc/meminfo:

in https://blog.famzah.net/2014/., the author mentions a formula: MemTotal = MemFree + Buffers + Cached + SwapCached + AnonPages + Slab + PageTables + KernelStack

as a result, I calculated that the sum of those values is almost 500MB less than that of memtotal. Has anyone ever seen such a phenomenon?

Memory centos linux

Mar.31,2021

In the same case as

, the boot of 4GB soared to 3.7GB centos7.4, which could not be detected by the top. Later, the situation alleviated after re-mount sdb1 (it should not be directly related to); ps aux to find that python2 systemd is in use. Now it takes up about 1.5GB, free 2.5G, which is acceptable

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