Oracle Linux 5: Memory Used by VMware Balloon Driver Is Not Visible On O/S (Doc ID 2270987.1)

Last updated on JUNE 16, 2017

Applies to:

Linux OS - Version Oracle Linux 5.11 with Unbreakable Enterprise Kernel [2.6.39] and later
Information in this document applies to any platform.

Symptoms

On a VMware platform, the memory information shown in the /proc/meminfo file did not account for all memory. The memory appears to be missing even after the applications had been stopped.

Testing on similar configurations appear normal.

Below is an example showing this behavior:

 $ cat proc/meminfo
MemTotal: 82323656 kB  --->> 80 GB
MemFree: 23197140 kB   --->> 23 GB
Buffers: 174540 kB     --->> Ignore this value
Cached: 4935120 kB     --->> 5 GB
SwapCached: 0 kB
Active: 2096240 kB
Inactive: 3190488 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 82323656 kB
LowFree: 23197140 kB
SwapTotal: 32764556 kB
SwapFree: 32764556 kB
Dirty: 50272 kB
Writeback: 0 kB
AnonPages: 176904 kB
Mapped: 66444 kB
Slab: 256640 kB
PageTables: 12204 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 73926384 kB
Committed_AS: 763728 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 278916 kB
VmallocChunk: 34359458935 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
Hugepagesize: 2048 kB

Almost 50GB of memory looks missing.

 

Changes

 

Cause

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