[Xen-devel] xen not able to use total physical memory present in the system (192GB)

[àààààà ààààà <agasheac@xxxxxxxxx>]

Hi

I am using xen-4.1.2 with fedora-16 (kernel version 3.1.0.7) as dom0 on system having 192GB of RAM.

When i booted system xm info shows (total _memory parameter as 192GB and free_memory as 25MB) full memory but /proc/meminfo reports 132GB and xm list also reports 192GB for dom0

When I ran first VM with 32GB RAM, xm info started reporting memory for dom0 around 132GB and 32GB for VM and cat /proc/meminfo on dom0 reported around 100GB. I am able to boot 4 VMs with this setup but 5th VM fails to boot with not enough memory.


ultimately not able to use full system memory ? 60GB went missing from memory. 

http://old-list-archives.xen.org/archives/html/xen-devel/2009-07/msg00521.html

On this thread, 

Jan mentined 
"the hypervisor has been validated to work fine with 1Tb for much longer, it was
really the Dom0 kernel that had issues when not passing a dom0_mem=
option".

I am not using this option "dom0_mem". Is anybody faced any issue like this ?


Thanks,
Aniket

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