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[Xen-users] Xen can't use all the memory in my system ?

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Xen can't use all the memory in my system ?
From: Miguel Gómez <elmiguelonmakinon@xxxxxxxxx>
Date: Thu, 16 Jun 2005 20:17:33 +0200
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Reply-to: Miguel Gómez <elmiguelonmakinon@xxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
Hello people,
 I have problems when I try to use the total amount of memory that I have in my system. It has 128Mb and when I create two Debian VM I get this:
XENmaster:/etc/xen# xm list
Name              Id  Mem(MB)  CPU  State  Time(s)  Console
Debian2            1       31    0  -b---     47.1    9601
Debian3            2       31    0  -b---     49.6    9602
Domain-0           0       26    0  r----   1012.9

I have limited the VM's memory to 32 Mb. The VM config files are like this:

kernel = "/boot/vmlinuz-2.6.11-xenU"
memory = 32
name = "Debian2"
nics = 1
ip = "192.168.50.198"
disk = [ 'file:/vmDebian2,sda1,w', 'file:/vmDebianSwap2,sda2,w' ]

If I try to rise those 32Mb to fit the real memory in my system I get a message saying that It can not allocate that memory. I don't really know why.



PS: I've got something better:

XENmaster:/etc/xen# xm list
Name              Id  Mem(MB)  CPU  State  Time(s)  Console
Debian2            1       31    0  -b---     47.4    9601
Debian3            2       31    0  -b---     49.9    9602
Domain-0           0       26    0  r----   1018.7
ttylinux1          3       15    0  -b---      0.7    9603


But I still have 23 Mb of free memory, why can't  I use it ?

Thank you!!
Regards, Miguel.



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