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In our case the /proc/meminfo output inside Container 101 may look like the following:
# vzctl exec 101 cat /proc/meminfo
MemTotal:
8000 kB
MemFree:
5140 kB
LowTotal:
8000 kB
LowFree:
5140 kB
Buffers:
0 kB
Cached:
0 kB
SwapCached:
0 kB
HighTotal:
0 kB
HighFree:
0 kB
...
While working in this mode, please keep in mind the following:
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The specified amount of memory (in our case it is 8000 Kb) is always shown in the
MemTotal and LowTotal fields of the cat /proc/meminfo output.
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The values in the MemFree and LowFree fields are calculated automatically by the
system.
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All the other fields in the command output have the values set to 0.
To set the output of /proc/meminfo inside Container 101 to the 'virtualized in
privvmpages' mode, execute the following command on the Node:
# vzctl set 101 --meminfo privvmpages:3 --save
The amount of memory that will be displayed by running the cat /proc/meminfo
command inside Container 101 is calculated using the following formulas:
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Privvmpages_Value * 3 * 4Kb if Container 101 is running a 32-bit operating
system (OS) or an OS for x86-64 processors and
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Privvmpages_Value * 3 * 16Kb if Container 101 is running an OS for IA-64
processors
where Privvmpages_Value denotes the value of the PRIVVMPAGES parameter set in
the Container configuration file and 3 is an arbitrary integer coefficient which you can
modify to increase/decrease the amount of memory in the /proc/meminfo output.
Assuming that the privvmpages parameter for Container 101 is set to 10000, your output
may look as follows:
# vzctl exec 101 cat /proc/meminfo
MemTotal:
120000 kB
MemFree:
78248 kB
LowTotal:
120000 kB
LowFree:
78248 kB
Buffers:
0 kB
Cached:
0 kB
SwapCached:
0 kB
HighTotal:
0 kB
HighFree:
0 kB
...
As can be seen from the example above, the displayed records comply with the same rules
as the records in the 'virtualized in pages' mode.