Virtual machine performance degradation

The performance of my Virtual Machine seems to degrade overnight.
After installation, I connect to the Administration Services Console and whenever I click on a menu item, the response is very fast.
I switch the virtual machine off, and the next day, it runs very slowly. I have to wait a long time to open the Administration Services Console, and when I click on a menu item, I have to wait a long time for a response.
This keep getting worse, until I have to reinstall the virtual machine, and it is all over again.
I wonder if it all has something to do with the way I switch off the virtual machine. Should I save the state, turn it off or shutdown the guest operating system? I do not need to save the state of the virtual machine, or go back to a particular point in time of the virtual machine.
Has anyone come across this problem yet?
Best regards
Juan Algaba

The help files are good at explaining how to interpret each tab, however there is also a use case section that may guide you in good direction: http://pubs.vmware.com/vrealizeoperationsmanager-6/topic/com.vmware.vcom.core.doc/GUID-78A53AA0-EA64-4C4C-ACFF-D2E3C03A6070.html

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VMM is unable to perform this operation without a connection to a Virtual Machine Manager management server.

Hi,
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https://technet.microsoft.com/en-ca/library/hh882396.aspx
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Use the Get-VMMServer cmdlet
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$cred;
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System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(Object
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System.Management.Automation.PipelineOps.InvokePipeline(Object input, Boolean
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pipeElementAsts, CommandRedirection[][] commandRedirections, FunctionContext
funcContext)
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System.Management.Automation.Interpreter.ActionCallInstruction`6.Run(InterpretedFrame
frame)
at
System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(InterpretedFrame
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at
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Instance
name: SCVMM01.Domain.com
Instance ID:
{B5175EAC-D64D-2553-D567-F19B5C864BBD}
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Can you connect from powershell? get-vmmserver <VMMServerComputerName>
If this doesn't work it's likely that your VMM server doesn't work. Check Application log to see if there are errors related to VMM service.
You can also collect traces as described
here and attach them to this thread.
Are you using a domain administrator account? (this is the default allowed after SCVMM is installed - until other users are added).
also try restarting VMM server or VMM services once.
this occur if the SQL database owner is indicated as NULL. Try adding the SQL SA account as db owner.
refer this once -
https://social.technet.microsoft.com/Forums/en-US/a4199cb2-ccbf-4bb0-96c1-7a640143f81b/error-id-1615-vmm-is-unable-to-perform-this-operation?forum=virtualmachingmgrhyperv
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Can Virtual Machin system make negative impact to the database performance?

Can Virtual Machin system make negative impact to the database performance?
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Thank you

The virtual machine software vendor must have certified and provided some performance figures like running Oracle on our VM would have a performance hit of n%. VMWare has such a figure published (8% if I recall correctly).
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Virtual machines in every hypervisor that I know of are able to use additional virtual CPUs on which to schedule additional concurrent threads of execution.
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You could even run Windows natively and still run your VM servers.
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Hello,
Win 8.1, VBscript
After moving 3 servers to a new PC, my scripts don't work because WMIService is not returning the virtual machines in the list from the query. The following query shows the problem:
Option Explicit
WScript.Echo "vmStatus"
Dim WMIService
Dim VMList
Dim VM
'Get instance of 'virtualization' WMI service on the local computer
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Set VMList = WMIService.ExecQuery("SELECT * FROM Msvm_ComputerSystem")
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WScript.echo VMList.count
For Each VM In VMList
WScript.Echo "========================================"
WScript.Echo "VM Caption: " & VM.Caption
WScript.Echo "VM Name: " & VM.ElementName
WScript.Echo "VM GUID: " & VM.Name
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This is the output:
vmStatus
count
1
========================================
VM Caption: Hosting Computer System
VM Name: WBCDEVIDEPC2
VM GUID: WBCDEVIDEPC2
VM State: 2
On the previous machine there would be 4 machines in the list, the host plus 3 VM's.
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The VM's that were moved to the new hosting machine are in fact working correctly. There's a domain controller, a TFS server and a build machine. The domain is functioning and clients can reach the TFS just fine.
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Alan

Hi jrv,
Got it, you're right, it's intuitive - and cool. Thanks for talking me into it. It'll take time to get good, but I don't need to be good right now.
While I was searching around (just before you last post), I found this
site and as you say, it seems pretty straightforward.
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Best Regards,
Alan

Performance degradation encountered while running BOE in clustered set up

Problem Statement:
We have a clustered BOE set up in Production with 2 CMS servers (named boe01 and boe02) . Mantenix application (Standard J2EE application in a clustered set up) points to these BOE services hosted on virtual machines to generate reports. As soon as BOE services on both boe01 and boe02 are up and running , performance degradation is observed i.e (response times varies from 7sec to 30sec) .
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3) Possible BOE Cluster Issue:
Tests in staging environment ( with a similar clustered BOE setup ) have proved inconclusive.
We require your help in
- Root cause Analysis for this problem.
- Any troubleshooting action henceforth.
Another observation from our Weblogic support engineers for the above set up which may or may not be related to the problem is mentioned below.
When the services on BOE_2 are shutdown and we try to fetch a particular report from BOE_1 (Which is running), the following WARNING/ERROR comes up:-
07/09/2011 10:22:26 AM EST> <WARN> <com.crystaldecisions.celib.trace.d.if(Unknown Source)> - getUnmanagedService(): svc=BlockingReportSourceRepository,spec=aps<BOE_1> ,cluster:@BOE_OLTP, kind:cacheserver, name:<BOE_2>.cacheserver.cacheserver, queryString:null, m_replaceable:true,uri=osca:iiop://<BOE_1>;SI_SESSIONID=299466JqxiPSPUTef8huXO
com.crystaldecisions.thirdparty.org.omg.CORBA.TRANSIENT: attempt to establish connection failed: java.net.ConnectException: Connection timed out: connect minor code: 0x4f4f0001 completed: No
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     at com.crystaldecisions.thirdparty.com.ooc.OB.GIOPClient.createTransport(GIOPClient.java:233)
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     at com.crystaldecisions.enterprise.ocaframework.o.try(Unknown Source)
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We see the above warning coming 2 or 3 times before the request is processed and then we see the report. We have checked our config's for the cluster but didn't find anything concrete.
Is this a normal behavior of the software or can we optimize it?
Any assistance that you can provide would be great

Rahul,
I have exactly the same problem running BO 3.1 SP3 in a 2 machine cluster on AIX. Exact same full install on both machines. When I take down one of the machines the performance is much better.
An example of the problem now is that when i run the command ./ccm.sh -display -username administrator -password xxx on the either box when they are both up and running, I sometimes receive a timeout error (over 15mins)
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When I bring down one of the machines and run the command ./ccm.sh -display again then this brings back results in less than a minute...
I am baffled as to the problem so was wondering if you found anything from your end
Cheers
Chris

Remote Desktop Services Role on a Virtual Machine (VM) Requirements

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*-Dtangosol.coherence.machine=${server_name} -Dtangosol.coherence.wka=${server_ip} -Dtangosol.coherence.localport=${server_port}*
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But this deteriorated the performance drastically both in pushing data into the cache and getting events via map listener.
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Hi Mahesh,
From your description it sounds as if you've configured each node with a wka list just including it self. This would result in N rather then 1 clusters. Your client would then be serviced by the resources of just a single cache server rather then an entire cluster. If this is the case you will see that all nodes are identified as member 1. To setup wka I would suggest using the override file rather then system properties, and place perhaps 10% of your nodes on that list. Then use this exact same file for all nodes. If I've misinyerpreted your configuration please provide additional details.
Thanks,
Mark
Oracle Coherence

Performance degradation with -g compiler option

Hello
Our mearurement of simple program compiled with and without -g option shows big performance difference.
Machine:
SunOS xxxxx 5.10 Generic_137137-09 sun4u sparc SUNW,Sun-Fire-V250
Compiler:
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#include "time.h"
#include <iostream>
int main(int argc, char ** argv)
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ptime test_malloc_deb.xreal 10.682
user 10.388
sys 0.023
Without -g:
CC -o test_malloc.x test_malloc.c
ptime test_malloc.xreal 2.446
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sys 0.018
As you can see performance degradation of "-g" is about 4 times.
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This will give us possibility to open customer core files using non-stripped exe.
But our tests shows that stripping does not give performance of executable compiled without '-g'.
So we are losing performance by using this compilation method.
Is it expected behavior of compiler?
Is there any way to have -g option "on" and not lose performance?

In your original compile you don't use any optimisation flags, which tells the compiler to do minimal optimisation - you're basically telling the compiler that you are not interested in performance. Adding -g to this requests that you want maximal debug. So the compiler does even less optimisation, in order that the generated code more closely resembles the original source.
If you are interested in debug, then -g with no optimisation flags gives you the most debuggable code.
If you are interested in optimised code with debug, then try -O -g (or some other level of optimisation). The code will still be debuggable - you'll be able to map disassembly to lines of source, but some things may not be accessible.
If you are using C++, then -g will in SS12 switch off front-end inlining, so again you'll get some performance hit. So use -g0 to get inlining and debug.
HTH,
Darryl.

Virtual machine performance degradation

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