Re: [Xen-users] System Memory

[George Shuklin <george.shuklin@xxxxxxxxx>]

AFAIK xen themself reserve a very little memory (about 1 Mb or so). Main
'memory eating' is xenballoon. I still don't know where those memory
use, but if you ran VM with high 'maxmem' with low mem be ready to have
huge overhead (20Gb maxmem have overhead about 300-400MiB). 


Ð ÐÑÑ, 31/08/2010 Ð 18:04 -0300, Net Warrior ÐÐÑÐÑ:
> Hi There .
> 
> As from what I see, my system is not seeing all the available ( 4GB ) o
> memory, does xen take some for it's own? Am I missing something in the
> kernel?
> 
> 
> netwarrior build-linux-2.6-pvops_x86_64 # dmesg |grep -i memo
> released 151863 pages of unused memory
> initial memory mapped : 0 - 20000000
> init_memory_mapping: 0000000000000000-00000000aff90000
> Memory: 2749108k/2883136k available (4930k kernel code, 392k absent,
> 133136k reserved, 2304k data, 512k init)
> Non-volatile memory driver v1.3
> Freeing unused kernel memory: 512k freed
> EDAC amd64: This node reports that Memory ECC is currently disabled, set
> F3x44[22] (0000:00:18.3).
> [drm] Setting GART location based on new memory map
> 
> netwarrior build-linux-2.6-pvops_x86_64 # free
>              total       used       free     shared    buffers     cached
> Mem:       2873920    2623096     250824          0     182432    1143924
> -/+ buffers/cache:    1296740    1577180
> Swap:       976888       3512     973376
> 
> netwarrior build-linux-2.6-pvops_x86_64 # uname -a
> Linux netwarrior 2.6.32.18 #5 SMP Tue Aug 31 10:26:14 ART 2010 x86_64
> AMD Athlon(tm) II X4 630 Processor AuthenticAMD GNU/Linux
> 
> 
> Thanks in advaces
> Regards
> 
> 
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