Re: [Xen-users] Bug or cofiguration error?

[<admin@xxxxxxxxxxx>]

The dom0 does not need all of the CPUs or all of the memory.  The only thing
that is important is whether or not the hypervisor can see the resources and
assign them to various domU.  Use XenCenter or OpenXenManager to make sure
the hypervisor can see the resources.

Remember, the dom0 is not the hypervisor.  The dom0 is simply one of the
guests with special privileges and duties.  This is often a source of
confusion for new Xen users.  The domU don't run inside the dom0.  The dom0
and domU run inside the hypervisor.

-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxx] On Behalf Of Leonardo Pereira
Sent: Thursday, March 01, 2012 10:58 AM
To: xen-users@xxxxxxxxxxxxx
Subject: [Xen-users] Bug or cofiguration error?

Hello,

We are students of Computer Science and we are doing some
experiments with XCP, we have a server with 2 xeon processors each
one containing 4 physical cores with HT, but the XCP recognizes 16
cores (8 physical + 8 virtual) but uses only 4 (cpu 0,1,2 and 3).
 When accessing  "/ proc / cpuinfo" are listed only 4 cores, but
"/ sys / devices / system / cpu" lists 16 cores but the cpu file
"online" for 4 to 15 cpu's is set to "0".

making:
echo 1> / sys/devices/system/cpu/cpu4/online
.
.
.
echo 1> / sys/devices/system/cpu/cpu15/online

all cores become activated.
But when the server is restarted only cpus 0,1,2,3 are active.

Is this a bug or a config error?

Thanks.

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