[Xen-users] Ram Calculation

[ShaunR <mailinglists@xxxxxxxxxxxxxxxx>]

Years ago when i first started using xen i specified a dom0_mem=xxx in 
grub.  I no longer do this, what i do now is set the dom0_min-mem 
setting in xend-config.sxp to 1024.  I also have a few scripts that run 
at boot and one of them does a `xm mem-set 0 1024`.  after that a xm 
list 0 shows dom0 allocated 1024 Ram.  The problem comes on teh system 
when i run free or free -m, free shows dom0 using 1336096 with only 
1160512 used.  This also prevents the other command i run `xm mem-max 0 
1024` from running correctly.  Anybody know if this is a bug or what may 
be going on here.  Is there anyway to force dom0 to 1024 with out having 
to specify it in grub?
Next problem is the mem usage from xm info.  xm info shows the host 
having a total of 32766 Ram, and a free memory of 12531.  when i do a xm 
list and total the ram for all running domains (including dom0) it 
doesn't come out to 12531.  How can i get accurate reporting of how much 
ram the system has, how much each guest is really using, and how much 
ram is really free?
~Shaun


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