[Xen-users] xm create random error

["Mirco Piccin" <pictux@xxxxxxxxx>]

Hi all.
I'd like to ask you for a thing i don't understand.
I have a pc with 1gb ram, i've installed debian etch on it and then Xen Server from debian repository.
The installation is ok, the new xen kernel boot very well, but sometimes, when i try to boot a xen vm, xen gives me that error:

xentux:~# xm create /etc/xen/xen01etch.cfg 
Using config file "/etc/xen/xen01etch.cfg".
Error: I need 131072 KiB, but dom0_min_mem is 200704 and shrinking to 200704 KiB would leave only -84804 KiB free.

Yes, i read more other post with the same problem, and i try to solve it:

default xend-config.sxp:
/etc/xen/xend-config.sxp
...
# dom0-min-mem is the lowest memory level (in MB) dom0 will get down to.
# If dom0-min-mem=0, dom0 will never balloon out.
(dom0-min-mem 196)
...

Updated after many posts reading:
..
(dom0-min-mem 16)
...

and that's the result:
xentux:~# xm create /etc/xen/xen01etch.cfg 
Using config file "/etc/xen/xen01etch.cfg".
Error: I need 131072 KiB, but dom0_min_mem is 16384 and shrinking to 16384 KiB would leave only 99516 KiB free.

The same problem.
But it happens randomly .... 

Sorry if it seems a stupid question (sure, i should RTFM), but:
1 gb ram isn't it enought?
Why sometimes my "xn01etch" starts without problems, and sometimes happens what i've described?

Pls, help me :-)
Thanks!

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