[Xen-users] minimum memory for dom0 does not matches with 196Mb and showing less memory

[Tapas Mishra <mightydreams@xxxxxxxxx>]

I am having 4 VMs
the total memory of server is 8Gb and gave 2GB + 2GB + 2GB +1 Gb to
them .I was left with approx 877 Mb

Following is out put of xm list
Name                                     ID      Mem    VCPUs
State   Time(s)
Domain-0                                0       877       8
     r-----    109.5
domu1                                     3       2048     1
     -b----      2.7
domu2                                     2       2048     1
     -b----      2.8
domu3                                     1       2048     1
     -b----      2.8
domu4                                     4       1024     1
     -b----      2.8

When I try to add a 5th host which has 477 Mb memory so that Dom0
still has 500 Mb I can not boot it I get error not Enough memory.
More over once the error comes if I shutdown one domain so that some
memory becomes free even then Dom0 is showing 877 which is not the
case in other xen installations I have not limited dom0_mem so this
should not happen.
What should I check in ?
-- 
Tapas

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