I'm trying to figure if my software running on linux suffers from memory leak. I've tried to measure the available physical memory as found in /proc/meminfo (see below) but could understand which field(s) represents the available memory and what is the relation between MemFree, Cached, Buffers, Active, Inactive.

cat /proc/meminfo
MemTotal:       124128 kB
MemFree:         62872 kB
Buffers:             0 kB
Cached:          15624 kB
SwapCached:          0 kB
Active:          38724 kB
Inactive:        11148 kB
SwapTotal:           0 kB
SwapFree:            0 kB
Dirty:               0 kB
Writeback:           0 kB
AnonPages:       34272 kB
Mapped:          14640 kB
Slab:             5564 kB
SReclaimable:      424 kB
SUnreclaim:       5140 kB
PageTables:        504 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
WritebackTmp:        0 kB
CommitLimit:     62064 kB
Committed_AS:    57936 kB
VmallocTotal:   655360 kB
VmallocUsed:      1016 kB
VmallocChunk:   654328 kB
linux memory
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