To find out the ODA BASE memory allocation, on DOM0, you can use oakcli show oda_base command:
# oakcli show oda_base
ODA base domain
ODA base CPU cores :8
ODA base domain memory :64
ODA base template :/OVS/oda_base_12.1.2.7.gz
ODA base vlans :['net1', 'net2', 'vlan321', 'vbr1']
ODA base current status :Running
When deploy the ODA, you decide how much memory to allocate to the ODA base and the rest will be used for VMs or set aside for future growth. In the above example, it was allocated 64G for the ODA_BASE.
Use xm info to find out the available memories on the ODA.
# xm info
xm info
host :
release : 2.6.39-400.276.1.el5uek
version : #1 SMP Wed Jan 27 15:31:57 PST 2016
machine : x86_64
nr_cpus : 72
nr_nodes : 2
cores_per_socket : 18
threads_per_core : 2
cpu_mhz : 2294
hw_caps : bfebfbff:2c100800:00000000:00007f40:73fefbff:00000000:00000021:000037ab
virt_caps : hvm hvm_directio
total_memory : 262010 // Total physical installed.
free_memory : 188123 // Available for VMs, etc.
free_cpus : 0
xen_major : 4
xen_minor : 1
xen_extra : .3OVM
xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler : credit
xen_pagesize : 4096
platform_params : virt_start=0xffff800000000000
xen_changeset : unavailable
xen_commandline : dom0_mem=4096M crashkernel=256M@64M extra_guest_irqs=64,2048 nr_irqs=2048
cc_compiler : gcc version 4.1.2 20080704 (Red Hat 4.1.2-48)
cc_compile_by : mockbuild
cc_compile_domain : us.oracle.com
cc_compile_date : Wed Sep 23 23:17:43 PDT 2015
xend_config_format : 4
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