[Xen-users] Memory information in 'xl list' output

[Anil Rao <anil.rao@xxxxxxxxxxxx>]

I was wondering if someone could help me decipher the memory related output of 'xl list'.

 

# xl list

Name                  ID  Mem VCPUs     State   Time(s)

Domain-0              0  1024          8           r-----    50198.0

Hvm_01               23  1019         2           -b----         38.5

Hvm_02               24  2043         2           -b----         38.1

 

Domain-0 has a configured memory size of 1024 MB. Hvm_01 and Hvm_02 have configured memory sizes of 1024 MB and 2048 MB respectively. The host computer has 6+ GB of physical memory.

 

I am surprised why the values under 'Mem' for Hvm_01 and Hvm_02 are 5 MB less than their configured memory sizes. Is this somehow related to the memory overhead needed by Xen to run these VMs?

 

I am running Xen 4.0.1 along with PVOPS Dom-0 (2.6.32 kernel).

 

Thanks.

-Anil

 

 

 

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