[Xen-devel] xm info showing too much free ram

[Hans-Christian Armingeon <johnny@xxxxxxxxxx>]

Hi,

My dom0 has 2g ram allocated, and I have 2.5 G Ram physically in my machine.
I needed more Ram in domU so I did a

# xm mem-set 0 1000

# xm list
Name                              ID Mem(MiB) VCPUs State  Time(s)
Domain-0                           0     1000     1 r-----   471.8
gentoo64-xen                       2      453     1 ------ 29318.7

Looks Ok.

Increasing the Ram of domU

# xm mem-set 2 1453

root@jam:~# xm list
Name                              ID Mem(MiB) VCPUs State  Time(s)
Domain-0                           0     1000     1 r-----   472.5
gentoo64-xen                       2     1453     1 ------ 29336.7

Lokks OK.

Look at the line where it says:
free_memory            : 1064

root@jam:~# xm info
host                   : jam
release                : 2.6.16-20060326.1-xen0
version                : #1 SMP Sun Mar 26 21:41:31 CEST 2006
machine                : x86_64
nr_cpus                : 1
nr_nodes               : 1
sockets_per_node       : 1
cores_per_socket       : 1
threads_per_core       : 1
cpu_mhz                : 2200
hw_caps                : 
078bfbff:e3d3fbff:00000000:00000010:00000001:00000001:00000001
total_memory           : 2559
free_memory            : 1064
xen_major              : 3
xen_minor              : 0
xen_extra              : -unstable
xen_caps               : xen-3.0-x86_64
platform_params        : virt_start=0xffff800000000000
xen_changeset          : Fri Mar 24 17:48:03 2006 +0100 9435:11fee62328cc
cc_compiler            : gcc-Version 4.0.2 20050808 (prerelease) (Ubuntu 
4.0.1-4ubuntu9)
cc_compile_by          : root
cc_compile_domain      : localdomain
cc_compile_date        : Fr Mär 24 23:14:02 CET 2006
root@jam:~# xm info
host                   : jam
release                : 2.6.16-20060326.1-xen0
version                : #1 SMP Sun Mar 26 21:41:31 CEST 2006
machine                : x86_64
nr_cpus                : 1
nr_nodes               : 1
sockets_per_node       : 1
cores_per_socket       : 1
threads_per_core       : 1
cpu_mhz                : 2200
hw_caps                : 
078bfbff:e3d3fbff:00000000:00000010:00000001:00000001:00000001
total_memory           : 2559
free_memory            : 1064
xen_major              : 3
xen_minor              : 0
xen_extra              : -unstable
xen_caps               : xen-3.0-x86_64
platform_params        : virt_start=0xffff800000000000
xen_changeset          : Fri Mar 24 17:48:03 2006 +0100 9435:11fee62328cc
cc_compiler            : gcc-Version 4.0.2 20050808 (prerelease) (Ubuntu 
4.0.1-4ubuntu9)
cc_compile_by          : root
cc_compile_domain      : localdomain
cc_compile_date        : Fr Mär 24 23:14:02 CET 2006

Is that correct?

I don't think so.

Johnny

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