ProxMox shows 11% RAM usage but top and free -g show 99% usage

N

ned

Renowned Member
Jan 26, 2015
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2
83
Hi,

I am running ProxMox with OpenVZ Containers for 2 months now and love it. I am having a issue with my RAM usage as free -g command displays 99% usage and ProxMox web interface displays 11% usage.

htop program shows displays 11% usage and I know htop calculates buffers and cache with actual RAM.

Code: 
# free -g
             total       used       free     shared    buffers     cached
Mem:           118        116          1          0          2        100
-/+ buffers/cache:         13        104
Swap:            0          0          0

top output

Code: 
MiB Mem:    120872 total,   119718 used,     1153 free,     2756 buffers
MiB Swap:      976 total,       76 used,      900 free,   103206 cached

htop output

Code: 
|13735/120872MB

ScoutRealtime app shows

Code: 
memory used

   13760 MB of 120872 MB




meminfo outout

Code: 
~# cat /proc/meminfo 
MemTotal:       123773160 kB
MemFree:         1159692 kB
Buffers:         2822964 kB
Cached:         105687992 kB
SwapCached:        25696 kB
MemCommitted:   36065280 kB
VirtualSwap:     1336768 kB
Active:         35571388 kB
Inactive:       81330396 kB
Active(anon):    5329632 kB
Inactive(anon):  3611956 kB
Active(file):   30241756 kB
Inactive(file): 77718440 kB
Unevictable:       10928 kB
Mlocked:           10928 kB
SwapTotal:       1000440 kB
SwapFree:         921840 kB
Dirty:             89756 kB
Writeback:            16 kB
AnonPages:       7051040 kB
Mapped:           610028 kB
Shmem:            544780 kB
Slab:            5275068 kB
SReclaimable:    5056124 kB
SUnreclaim:       218944 kB
KernelStack:       14960 kB
PageTables:       129856 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    62887020 kB
Committed_AS:   19869256 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      253984 kB
VmallocChunk:   34359371884 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:        8128 kB
DirectMap2M:    125820928 kB

I am running

Code: 
# pveversion 
pve-manager/3.3-1/a06c9f73 (running kernel: 2.6.32-32-pve)

What am I missing?
 
Last edited:
ned said:
Hi,

I am running ProxMox with OpenVZ Containers for 2 months now and love it. I am having a issue with my RAM usage as free -g command displays 99% usage and ProxMox web interface displays 11% usage.

htop program shows displays 11% usage and I know htop calculates buffers and cache with actual RAM.

Code: 
# free -g
             total       used       free     shared    buffers     cached
Mem:           118        116          1          0          2        100
-/+ buffers/cache:         13        104
Swap:            0          0          0

top output

Code: 
MiB Mem:    120872 total,   119718 used,     1153 free,     2756 buffers
MiB Swap:      976 total,       76 used,      900 free,   103206 cached

htop output

Code: 
|13735/120872MB

ScoutRealtime app shows

Code: 
memory used

   13760 MB of 120872 MB




meminfo outout

Code: 
~# cat /proc/meminfo 
MemTotal:       123773160 kB
MemFree:         1159692 kB
Buffers:         2822964 kB
[B]Cached:         105687992 kB[/B]
SwapCached:        25696 kB
MemCommitted:   36065280 kB
VirtualSwap:     1336768 kB
Active:         35571388 kB
Inactive:       81330396 kB
Active(anon):    5329632 kB
Inactive(anon):  3611956 kB
Active(file):   30241756 kB
Inactive(file): 77718440 kB
Unevictable:       10928 kB
Mlocked:           10928 kB
SwapTotal:       1000440 kB
SwapFree:         921840 kB
Dirty:             89756 kB
Writeback:            16 kB
AnonPages:       7051040 kB
Mapped:           610028 kB
Shmem:            544780 kB
Slab:            5275068 kB
SReclaimable:    5056124 kB
SUnreclaim:       218944 kB
KernelStack:       14960 kB
PageTables:       129856 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    62887020 kB
Committed_AS:   19869256 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      253984 kB
VmallocChunk:   34359371884 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:        8128 kB
DirectMap2M:    125820928 kB

I am running

Code: 
# pveversion 
pve-manager/3.3-1/a06c9f73 (running kernel: 2.6.32-32-pve)

What am I missing?
Click to expand...
Hi,
perhaps one process has an memory leak?

If you press "m" in top, do you see an huge memory-process?

Udo

edit: on the second look, I see that your mem is cached...
 
Last edited:
This is how to calculate actual free RAM, use free command to get the values and then add number...

free -m


'free' + ('buffers' + 'cached')
 
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