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Re: [Xen-users] Cannot see my memory - why?
- To: Xen-users@xxxxxxxxxxxxxxxxxxx
- From: Ryan Knapper <ryanknapper@xxxxxxxxx>
- Date: Fri, 24 Apr 2009 08:49:00 -0700
- Cc:
- Delivery-date: Fri, 24 Apr 2009 08:50:01 -0700
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- List-id: Xen user discussion <xen-users.lists.xensource.com>
That's just how Xen works. Dom-0 is really a virtual machine also. If you want it to have more RAM, allocate more to it, just like the others.
On Fri, Apr 24, 2009 at 08:10, Dustin Henning <Dustin.Henning@xxxxxxxxxxx> wrote:
Have you ever been able to? ÂDom0 is a virtual machine that only has 1 GiB.
Try xm info.
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Kevin McKeon
Sent: Friday, April 24, 2009 11:05
To: Xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Cannot see my memory - why?
Has anyone seen this issue below.
Issue:
I cannot see most of my RAM from Domain-0 - even after a reboot
I have a CentOS 5.3 box with 16GB of ram and 8 CPU cores. I've set
Domain-0's memory to 1GB and my two DomUs to 4 GB and 2GB respectively (see
blelow).
#xm list
NameÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ IDÂÂÂÂÂÂÂÂÂÂÂÂ Mem(MiB)ÂÂÂÂ VCPUsÂÂÂ StateÂÂÂÂÂ
Time(s)
Domain-0ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ 0ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ 1024ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ 8ÂÂÂÂÂÂ
r------ÂÂÂÂÂ 2023.7
guest1ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ 1ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ 4096ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ 1ÂÂÂÂÂÂ
r------ÂÂÂÂÂ 83.3
guest2 ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ 3 ÂÂÂÂÂÂÂÂÂÂÂÂÂÂ 2048 ÂÂÂÂÂÂÂÂÂÂÂÂÂÂ 1ÂÂÂÂÂÂ
r------ÂÂÂÂÂ 299.5
( ID #2 is missing because I destroyed it, removed it's config file and it's
disk - it's gone for good!)
When I check my system memory from Domain-0 using 'free -m' (the '- m' just
means show me in Megabytes), it shows that my box only has a total of 1 GB!
What the heck.ÂÂ /proc/meminfo shows the same thing! Where did my ram go?
Any thoughts guys?
# free -m
ÂÂÂÂÂÂÂÂÂÂÂÂ totalÂÂÂÂÂÂ usedÂÂÂÂÂÂ freeÂÂÂÂ sharedÂÂÂ buffersÂÂÂÂ cached
Mem:ÂÂÂÂÂÂÂÂÂ 1024ÂÂÂÂÂÂÂ 783ÂÂÂÂÂÂÂ 240ÂÂÂÂÂÂÂÂÂ 0ÂÂÂÂÂÂÂÂ 57ÂÂÂÂÂÂÂ 101
-/+ buffers/cache:ÂÂÂÂÂÂÂ 625ÂÂÂÂÂÂÂ 398
Swap:ÂÂÂÂÂÂÂÂ 3967ÂÂÂÂÂÂÂÂÂ 0ÂÂÂÂÂÂ 3967
Â
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