vCenter

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  • 1.  host memory usage

    Posted Aug 13, 2007 01:42 PM

    Hi everybody.

    I have two esx 3.0.2 and vcenter 2.0.2. Each esx have 8 gb of memory.

    ESX1:

    VM1: 4164 MB / Host memory usage: 1gb / guest memory usage: 43MB

    VM2: 4164 MB / Host memory usage: 3.3gb / guest memory usage: 157MB

    VM3: 2084 MB / Host memory usage: 2.5gb / guest memory usage: 100MB

    The question is... why my esx1 showme the red alarm (host memory usage) if the VM's only uses 300MB ...

    What i can do to decrease the host memory usage?.

    Thanks



  • 2.  RE: host memory usage

    Posted Aug 13, 2007 01:51 PM

    Do you have VMware Tools installed for each VM?

    Is there a memory reservation set on each VM or in a resource pool that the VM is a member of?

    Does each VM really need 2-4GB of allocated RAM?



  • 3.  RE: host memory usage

    Posted Aug 13, 2007 01:55 PM

    Vmtools are installed in all VM's.

    The configuration of all VMs is:

    Shares: normal

    Reservation: 0MB

    Limit: Unlimited



  • 4.  RE: host memory usage

    Posted Aug 13, 2007 02:37 PM

    Host mem and guest mem can be mis-leading because of all the memory tricks ESX does. Read these posts for mroe info on this...

    http://www.vmware.com/community/message.jspa?messageID=517737

    http://www.vmware.com/community/thread.jspa?threadID=62628&tstart=0

    http://www.vmware.com/community/thread.jspa?messageID=620581&#620581

    http://www.vmware.com/community/thread.jspa?messageID=607837&#607837

    http://www.vmware.com/community/thread.jspa?messageID=618634&#618634

    Also...

    Host Mem and Guest Mem % - http://www.vmware.com/community/thread.jspa?messageID=620581&#620581

    Memory Resource Management in VMWare ESX Server - http://www.stanford.edu/~stinson/cs240/cs240_1/revs/esx.txt

    The Role of Memory in ESX Server 3 - http://www.vmware.com/pdf/esx3_memory.pdf

    Memory resource management in Vmware ESX Server - http://www.vmware.com/pdf/usenix_resource_mgmt.pdf

    Fyi…if you find this post helpful, please award points using the Helpful/Correct buttons.

    -=-=-=-=-=-=-=-=-=-=-==-=-=-=-=-=-=-=-=-=-=-=-

    Thanks, Eric

    Visit my website: http://vmware-land.com

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  • 5.  RE: host memory usage

    Posted Aug 14, 2007 04:46 PM

    Any chance you recently upgraded systems? There have been issues with stuck stats and alarms on systems after upgrading. Restarting the VC agent on the ESX host will fix that. I know I ran into that a couple of times.

    service vmware-vpxa restart[/b]