[Fedora-xen] physical memory is reduced :-(

[Deependra Shekhawat]

You can do the same via virsh too.
By the way can someone tell me why doesn't the RAM which was used by the VM
is given back to Domain 0 automatically when the VM shuts down.


On 3/6/07, Andrew Cathrow <acathrow at redhat.com> wrote:
>
> run "xm list" and you see memory allocations to each domain.
> If you run "xm mem-set " you should be able to allocate that memory to
> domain 0 (if it needs it)
>
> xm mem-set 0 512
>
> Would allocate 512MB to domain 0.
>
>
> On Mon, 2007-03-05 at 16:39 -0400, John Sanabria wrote:
>
> Hi,
> i had installed the last updates for FC6 in a machine with 1 Giga of RAM.The machine's ip is 136.145.116.88.
> ------------------------------------------------------[root at dhcp-crl-116-88 ~]# free             total       used       free     shared    buffers     cachedMem:        962032     281512     680520          0      16116     191412-/+ buffers/cache:      73984     888048Swap:      2031608          0    2031608[root at dhcp-crl-116-88 ~]# uname -aLinux dhcp-crl-116-88.ece.uprm.edu 2.6.19-1.2911.6.4.fc6xen #1 SMP Sat Feb24 14:57:17 EST 2007 i686 i686 i386 GNU/Linux------------------------------------------------------
> now, i execute a "xm create xentemplate_6 -c", and voila! i lost approx250 Mbytes of PHYSICAL RAM, :-(------------------------------------------------------[root at dhcp-crl-116-88 ~]# free             total       used       free     shared    buffers     cachedMem:     -> 764928 <-  375796     389132          0      17536     281980-/+ buffers/cache:      76280     688648Swap:      2031608          0    2031608------------------------------------------------------
> then, shutdown the virtual machine, and i did not get back the lost 250Mbytes of RAM.anybody knows how to get back my physical memory after to shutdown thevirtual machine? is that behavior a bug?
> if i run two virtual machines, my physical memory is reduced until 512 MBof Physical RAM. At this time, the only way to get 1Gbyte of RAM isrebooting the machine :-(.
> Thanks a lot for your suggestions.
> http://ece.uprm.edu/~s047267http://del.icio.us/josanabrhttp://blog-grid.blogspot.com
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>
> Andrew Cathrow
> Red Hat, Inc.
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