[ldoms-discuss] Oh where oh where has my 32meg gone

[Hitendra Zhangada]

David Finberg wrote:
> On Mon, 12 May 2008, Mike DeMarco wrote:
>
>   
>> I have configured a 5220 with 4 LDOMS + primary. System has 32Gbyte of ram and I have allocated it between the 5 total LDOMS as follows
>> 4Gbyte       -> domain controller
>> 16Gbyte     -> LDOM2
>> 4Gbyte       -> LDOM3
>> 4Gbyte       -> LDOM4
>> 3968Mbyte -> LDOM5
>>
>> I expected to be able to get 4Gbyte for the final LDOM but it would not bind until I subtracted 32Meg from it.
>>
>> Where is the missing 32Meg? Is it used for the Hypervisor?
>> I have found no documentation that explains what is consuming this memory.
>>     
>
> Yes (128M) , and this amount can vary some based on the specific firmware 
> release used.
>
>
>   

FYI.  There is a side note on pg 48 of the LDOMs beginner's guide about 
Hypervisor usage
of memory.  The memory used by HV will vary.  See, 
http://www.sun.com/blueprints/0207/820-0832.pdf



-- 
Hitendra Zhangada
====================================
SPS Common SW Features Engineering
Software Group, Sun Microsystems, Inc.
Sun Ph# (858) 625 3757, Sun Ext. x53757
Internal homepage http://esp.west/~hitu

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