[#ZBXNEXT-2861] Extend vm.memory and proc.mem item keys to support more information

Since kernel 3.* Linux has introduced a lot of new metrics which can be useful to have them:

MemTotal:        8004768 kB
MemFree:          274832 kB
MemAvailable:    6684344 kB
Buffers:             356 kB
Cached:           674384 kB
SwapCached:            0 kB
Active:           774988 kB
Inactive:         361688 kB
Active(anon):     591332 kB
Inactive(anon):   324776 kB
Active(file):     183656 kB
Inactive(file):    36912 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:             0 kB
SwapFree:              0 kB
Dirty:               328 kB
Writeback:             0 kB
AnonPages:        461504 kB
Mapped:           102040 kB
Shmem:            454320 kB
Slab:            6485736 kB
SReclaimable:    6442348 kB
SUnreclaim:        43388 kB
KernelStack:        6544 kB
PageTables:        13156 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     4002384 kB
Committed_AS:    2593920 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      168244 kB
VmallocChunk:   34359561240 kB
HardwareCorrupted:     0 kB
AnonHugePages:    204800 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:       71552 kB
DirectMap2M:     8316928 kB
DirectMap1G:     1048576 kB

[ZBXNEXT-2861] Extend vm.memory and proc.mem item keys to support more information Created: 2015 Jun 29 Updated: 2019 Dec 12
Status:	Open
Project:	ZABBIX FEATURE REQUESTS
Component/s:	Agent (G)
Affects Version/s:	None
Fix Version/s:	None

[ZBXNEXT-2861] Extend vm.memory and proc.mem item keys to support more information Created: 2015 Jun 29 Updated: 2019 Dec 12