Overcommitment of memory in production - it would be appropriate in this case?
Hi people,
I was given a specification for a number of virtual machines by architect application a few months back.
2 x Red Hat 6, 64 GB of memory, 4 CPU
2 x Red Hat 6, 32 GB memory, 4 CPU
These VM used about 75% of my cluster resources total. I followed these virtual machines, and it has been proven that these machines have been singularly most spec'd. In reality, the memory usage is not more than 1% of the amount awarded. For one of my hosts in the cluster, I can see active 1.5 GB on 26.5 consumed Go. Despite my protests and sending on a steady stream of performance statistics, I have had these machines resized.
I am aware that VMware do not advise the use of excessive pressure in a production environment. However, I intend to approve the memory on my cluster (ESXi 4.1 vSphere) to make the most of the lost memory.
So I wanted to run it past you guys to see if I could make any false assumptions on VMWare memory management. Are there certain conditions (like mine) approve what memory should be?
One last piece of information, for the moment none of the 4 systems have install the driver of the ball and yet, the VMWare tools have been installed without it. However, I convinced the admins to install the balloon pilot sending them information how the balloon pilot prevents the host swap which itself may impact system performance.
Thank you
Mick
I agree with David and would like to share an interesting opportunity: once the balloon driver is installed in these virtual machines, you will be able to force balooning over them by setting a limit of RAM resource that is less than the amount of RAM configured. This means for example you can restrict the VM 32 GB to 24 GB (or even less), and the balloon pilot will fly the surplus of 8 GB and put it back in ESXi.
Of course in production, you should use this method only as a last resort, but there is a chance that the VM admins who will never even notice. In the past, I tried that with some strongly oversized Windows/Exchange test servers that were in State, and the admins were not aware of a problem until one day that they really started to use the system...
-Andreas
Tags: VMware
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Disable the overcommitment of memory?
HI @all!
I am aware that in most cases that would not make sense and I'm just interested in it. Is there a way to globally disable the overcommitment of memory on an ESX Server? Of course, you can reserve memory for all virtual machines and thus avoid excessive punctures, but is there a way to disable it completely?
Kind regards
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If you have found this or other useful information, please consider awarding points to 'Correct' or 'useful '.
Sertting reservations to the memory assigned to the computer virtual is the only way to not approve - but remember two thing this serious will limit the denisity of VMs your ESX Server ib - I've never seen a sirution
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Diagnostic report (1.9.0027.0):
-----------------------------------------
Validation of Windows data-->Validation code: 50
Code of Validation caching online: 0xc004c4a2
Windows product key: *-* - FCTV3 - P9RTC-F9C3D
The Windows Product Key hash: G7PayGi + xFabXK4wlLkFbNDozpA =
Windows product ID: 00371-619-5427791-85058
Windows product ID type: 5
Windows license type: retail
The Windows OS version: 6.1.7601.2.00010100.1.0.048
ID: {AC5B74A9-0098-41DC-ACF4-BD8449D66609} (3)
Admin: Yes
TestCab: 0x0
LegitcheckControl ActiveX: N/a, hr = 0 x 80070002
Signed by: n/a, hr = 0 x 80070002
Product name: Windows 7 Professional
Architecture: 0 x 00000009
Build lab: 7601.win7sp1_gdr.140706 - 1506
TTS error:
Validation of diagnosis:
Resolution state: n/aGiven Vista WgaER-->
ThreatID (s): n/a, hr = 0 x 80070002
Version: N/a, hr = 0 x 80070002Windows XP Notifications data-->
Cached result: n/a, hr = 0 x 80070002
File: No.
Version: N/a, hr = 0 x 80070002
WgaTray.exe signed by: n/a, hr = 0 x 80070002
WgaLogon.dll signed by: n/a, hr = 0 x 80070002OGA Notifications data-->
Cached result: n/a, hr = 0 x 80070002
Version: N/a, hr = 0 x 80070002
OGAExec.exe signed by: n/a, hr = 0 x 80070002
OGAAddin.dll signed by: n/a, hr = 0 x 80070002OGA data-->
Office status: 109 n/a
OGA Version: N/a, 0 x 80070002
Signed by: n/a, hr = 0 x 80070002
Office Diagnostics: B4D0AA8B-604-645_025D1FF3-364-80041010_025D1FF3-229-80041010_025D1FF3-230-1_025D1FF3-517-80040154_025D1FF3-237-80040154_025D1FF3-238-2_025D1FF3-244-80070002_025D1FF3-258-3Data browser-->
Proxy settings: N/A
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Win32)
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Download signed ActiveX controls: fast
Download unsigned ActiveX controls: disabled
Run ActiveX controls and plug-ins: allowed
Initialize and script ActiveX controls not marked as safe: disabled
Allow the Internet Explorer Webbrowser control scripts: allowed
Active scripting: allowed
Recognized ActiveX controls safe for scripting: allowedAnalysis of file data-->
Other data-->
Office details:{AC5B74A9-0098-41DC-ACF4-BD8449D66609} 1.9.0027.0 6.1.7601.2.00010100.1.0.048 x 64 *-*-*-*-F9C3D 00371-619-5427791-85058 5 S-1-5-21-1356999665-2362789505-4127209914 Acer Aspire X 3812 FRIEND P01-A0 20090816000000.000000 + 0007A043C07018400F8 0809 0409 GMT Standard Time(GMT+00:00) 0 3 ACRSYS ACRPRDCT 109 Content Spsys.log: 0 x 80070002
License data-->
The software licensing service version: 6.1.7601.17514Name: Windows 7 Professional edition
Description: operating system Windows - Windows (r) 7, retail channel
Activation ID: e838d943-63ed-4a0b-9fb1-47152908acc9
ID of the application: 55c92734-d682-4d71-983e-d6ec3f16059f
Extended PID: 00371-00170-619-542779-01-2057-7601.0000-2042014
Installation ID: 007595347832785135952380495674625140911753099524272431
Processor certificate URL: http://go.microsoft.com/fwlink/?LinkID=88338
The machine certificate URL: http://go.microsoft.com/fwlink/?LinkID=88339
Use license URL: http://go.microsoft.com/fwlink/?LinkID=88341
Product key certificate URL: http://go.microsoft.com/fwlink/?LinkID=88340
Partial product key: F9C3D
License status: Notification
Reason for the notification: 0xC004F200 (non-genuine).
Remaining Windows rearm count: 3
Trust time: 02/11/2014-18:36:20Windows Activation Technologies-->
HrOffline: 0x00000000
HrOnline: 0xC004C4A2
Beyond: 0 x 0000000000000000
Event timestamp: 11:1:2014 20:45
ActiveX: Registered, Version: 7.1.7600.16395
The admin service: recorded, Version: 7.1.7600.16395
Output beyond bitmask:--> HWID data
Current HWID of Hash: LAAAAAEAAQABAAIAAAABAAAAAQABAAEA6GEkRoSxVFESavzCioZogPYoTFg =Activation 1.0 data OEM-->
N/AActivation 2.0 data OEM-->
BIOS valid for OA 2.0: Yes
Windows marker version: 0 x 20001
OEMID and OEMTableID consistent: Yes
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ACPI Table name OEMID value OEMTableID value
APIC1457 APIC 081609
FACP 081609 FACP1457
HPET OEMHPET 081609
MCFG 081609 OEMMCFG
SLIC ACRSYS ACRPRDCT
081609 OEMB1457 LASRYVITRAGE
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Code of Validation caching online: 0xc004c4a2
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