vCPU Allocation

Similar Questions

• Total number of vCPU by host ESX to avoid list of the CPU allocation during the deployment of VM

  Hello
  Can anyone please share your script to give a list because if all VMHost / total number of CPU of ESX managed by VCenter which is available?
  It is for me to be able to determine what VMhost I can deploy my VM avoids vCPU allocation.
  I understand that the best practice is maximum 4 vCPU unique VM by heart, so here's the example:
  Core 2 x 6 = 12 available vCPU
  This is why there may be a maximum of 12 x 4 = 48 maximum used total vCPU.

  Hi again

  IF you have a csv of the report to use this 1 line:

  $(foreach ($vmhost dans get-vmhost) {$vms $vmhost = | get - vm;})  $vmsVcpucount =($vms|) Measure - Object - property-sum numcpu) .sum; ""| Select @{N = 'Host'; County of E = {$vmhost. Name}},@{N='cpu'; E={$vmhost.numcpu}},@{N='Actual vCPU allocated '; Allocation of vCPU E={$vmsVcpucount}},@{N='Max'; E = {$vmhost.numcpu * 4}},@{N='Available vCPU allowance ';} (E = {($vmhost.numcpu * 4)-$vmsVcpucount}}}). Export-Csv c:\rep123.csv

  Greg

• PowerCLI script to display the number of vCPU by VMhost use

  Hi all

  I'm looking to get help here with powerCLI script to list each total number of ESXi vCPU host that is used to determine if there are any ESXi host CPU is more engaged.

  According to suggestion of performance in some blog vExpert, is around 1: 3 of Jepp core ratio: vCPU allocated, then how to display the report with the powerCLI for something like this:

  PRODESXi01
  Total of nuclei available: 32
  Used by the virtual machine: 28

  PRODESXi02
  Total of nuclei available: 32
  Used by the virtual machine: 38

  So according to the result above, the PRODESXi02 is more committed by 6vCPU allocated to the virtual machine.

  Note: The available total carrots is taken from the value of logical processors from the contents tab, when you click on the vSphere console.

  How to get this report using PowerCLI?

  Thank you

  You mean something like this?

  {Foreach ($esx in Get-VMHost)

  $vCPU = get-VM-location $esx | Measure-object-property NumCpu-sum | Select - ExpandProperty sum

  $esx | Select Name,@{N='pCPU'; E={$_. NumCpu}},

  @{N = 'vCPU'; E = {$vCPU}},

  @{N = "Ratio"; E = {[math]: Round ($vCPU / $_.)} (NumCpu, 1)}}

  }

• vCPU Compatability

  Hi all

  I worked with vSphere now for about 8-9 years and have encountered a problem with a client that I'm not sure how to solve.

  There are several groups on their site, but specifically there are 2 groups that have problems of multiple vCPU allocated to the VM system

  The problem only arises with multiple vCPU and the DELL R720, other hosts are R710 that work very well.

  There is a significant reduction of the CPU performance and overall VM pereformance when a virtual machine with more than 1 vCPU is moved from a R710 for the R720, I ran a diagnostic tool of CPU on the VM when moved and the answer is about half of the R710.

  Here is some information of addtitional on installation:

  • VMware vCenter Server Version 5.1.0 build 1123961
  • VMware ESXi 5.1.0 1065491
  • host1 DELL PowerEdge R710 Intel (r) CPU Xeon X 5670 @2. 93 GHz

  • host2 DELL PowerEdge R710 Intel (r) CPU Xeon X 5670 @2. 93 GHz

  • host3 DELL powerEdge R720 Intel Xeon CPU E5-2667 0 @2. 90 GHz

  Any thoughts?

  See you soon

  Slardy

  On the off chance that someone else gets this question, if you dsable power management in the BIOS, it will solved the problem

• Recoverable ability in oversized VM report

  I have a question how the total recoverable CPU is calculated in the oversized VM report.  For example, I have a cluster with 1414 hearts put into service.  Recommendation of the CPU is 1084 and recoverable CPU is 610.  I expect this total out equal (provisioned = recommendation + recoverable) but not nearby.   I see I have some VM with 1 core, recommendation will be 1.  I think that the recovery would be 0, but many cases, it is also 1 Although nothing could be claimed.  Anyone know why this is?  I want to get an idea of why this seems inaccurate.

  Thank you

  What is the powerstate of these virtual machines where the vCPU allocated 1 vCPU and recovery is 1 vCPU? It might suggest a VM decomm. vROPs will make this suggestion for PoweredOff and Idle VMs.

  I don't get too stock recoverable ability in vROPs. I really like the suggestions, but such people are rarely comfortable with resizing of a virtual machine to 8 vCPU until 1 vCPU. Then I usually start to reduce by half the specs and see how it works with half of resources once. If after the downsizing of a virtual machine at half the size, you feel comfortable cutting it in half again, go there.  This is my approach at least

  See you soon,.

  The f

• Request to modify the script to collect the CPU Ready in percentage by VM instead of milliseconds

  Hi all

  I would ask for help here with the script that I found in this forum by Mr. LucD to collect % VM CPU ready to be changed according to the famous formula for calculating the percentage of CPU of VM ready:

  ((Valeur de sommation UC / (< intervalle de mise à jour par défaut graphique en secondes > * 1000)) * 100) / number of vCPU = CPU % ready

  
  

  
  

  From my understanding, the script must be changed because:

  1. Don't divide the percentage CPU Ready by the number of vCPU for each virtual computer
  2. The refresh interval is not set 'for a week. for simplicity, this script will be used to collect last week performance data ($start = (Get-Date). AddDays(-7))

  Note: The refresh rate can be found this KB: VMware KB: conversion between the summation of values CPU and CPU ready %
  

  the purpose of this script is to classify VM of the result is greater than 10% determined as having problems with CPU Ready. Article source: http://docs.media.bitpipe.com/io_10x/io_107330/item_605784/Basic%20VMware%20vSphere%20Performance%20Guide_201211.pdf)

  I have tested and run script below:

  $allvms = @()
  $vms = Get-VM  
  $start = (Get-Date).AddDays(-7)
  $metrics = "cpu.usage.average","mem.usage.average","cpu.ready.summation" 
  
  
  Get-Stat -Entity $vms -Start $start -Stat $metrics | 
  Group-Object -Property {$_.Entity.Name} | %{
    $cpu = $_.Group | where {$_.MetricId -eq "cpu.usage.average" -and $_.Instance -eq ""} | Measure-Object -Property value -Average -Maximum -Minimum
    $mem = $_.Group | where {$_.MetricId -eq "mem.usage.average"} | Measure-Object -Property value -Average -Maximum -Minimum
    $vmstat = "" | Select Time,VmName, MemMax, MemAvg, MemMin, CPUMax, CPUAvg, CPUMin, CPURDYMaxPercent
    $vmstat.VmName = $_.Group[0].Entity.Name
    $vmstat.Time = $_.Group | Sort-Object -Property Timestamp | Select -First 1 | Select -ExpandProperty Timestamp
    $vmstat.CPUMax = [Math]::Round($cpu.Maximum,2)
    $vmstat.CPUAvg = [Math]::Round($cpu.Average,2)
    $vmstat.CPUMin = [Math]::Round($cpu.Minimum,2)
    $vmstat.MemMax = [Math]::Round($mem.Maximum,2)
    $vmstat.MemAvg = [Math]::Round($mem.Average,2)
    $vmstat.MemMin = [Math]::Round($mem.Minimum,2)
    $vmstat.CPURDYMaxPercent = &{
    $interval = $_.Group[0].IntervalSecs * 10
      ($_.Group | where {$_.MetricId -eq "cpu.ready.summation" -and $_.Instance -eq ""} | 
    Sort-Object -Property Value -Descending |
      Select -First 1 | 
      Select -ExpandProperty Value) / $interval
    }
    $allvms += $vmstat
  }
  $allvms | Select Time,VMName, MemMax, MemAvg, MemMin, CPUMax, CPUAvg, CPUMin, CPURDYMaxPercent | 
  Export-Csv "C:\TEMP\AllVMs-7days.csv" -noTypeInformation -UseCulture 
  

  I hope that this will be the most useful script to understand where particular VM is experiencing problem with percentage CPU Ready.

  Thanks in advance,

  I have my version here, I use to use of the CPU.

  {Function Get-Ready

  <>

  . LOGBOOK

  This unique feature provide several reports and information. IE: convert ready value into a readable format (for real-time, day, week, month, year).

  . DESCRIPTION

  This unique feature provides multiple information of esxi host, as the list below.

  The CPU usage of the virtual, Mhz, the use of the processor CPU ready computer

  vCPU allocated to the VM (jailbroken in the casings and core)

  VMHost name

  Information physical VMhost CPU (jailbroken in the casings and core)

  To convert between value of CPU ready summons in vCenter performance tables and the value of loan % of CPU that you see in esxtop, you must use a formula.

  The form requires that you know the default update intervals for performance dashboards. These are the default update for each chart intervals:

  Realtime: 20 seconds

  Last day: 5 minutes (300 seconds)

  Last week: 30 minutes (1800 seconds)

  Over the past month: 2 hours (7200 seconds)

  Last year: 1 day (86400 seconds)

  To calculate the % of CPU ready of the summation value ready CPU, use this formula:

  (Value of summons UC / ( * 1000)) * 100 = ready % CPU

  Example: Stats in real-time for a VM on vCenter may have an average CPU ready summation value of 1000. Use the appropriate formula values to get the loan % of CPU.

  (1000 / (20 sec * 1000)) * 100 = 5% CPU ready

  For more information on vmware 2002181 KB

  . VM PARAMETER

  Name of the virtual machine

  . ENTRIES

  String.System.Management.Automation.PSObject.

  . OUTPUTS

  None.

  . EXAMPLE OF

  If you wrap this script inside the function you can use it as a command.

  To encapsulate this script

  PS > Get-VMHost esxihost.fqdn | Get ready

  Report back for perticular VMHost vm

  . NOTES

  To view examples, type: "get-help Set-VMHostSSH-examples.

  For more information, type: "get-help Set-VMHostSSH-detailed".

  For technical information, type: "get-help Set-VMHostSSH-full".

  http://kunaludapi.blogspot.com

  #>

  [CmdletBinding()]

  (param

  [Parameter (Mandatory = $true, ValueFromPipeline = $True, ValueFromPipelineByPropertyName = $true)]

  ([String] $Name) #param

  BEGIN {#begin}

  {in process

  $Stattypes = "cpu.usage.average", "cpu.usagemhz.average", "cpu.ready.summation".

  foreach ($esxi in $(Get-VMHost $Name)) {}

  $vmlist = $esxi | Get - VM | Where-Object {$_.} PowerState - eq "Receptor"}

  $esxiCPUSockets = $esxi. ExtensionData.Summary.Hardware.NumCpuPkgs

  $esxiCPUcores = $esxi. ExtensionData.Summary.Hardware.NumCpuCores/$esxiCPUSockets

  $TotalesxiCPUs = $esxiCPUSockets * $esxiCPUcores

  {foreach ($vm to $vmlist)

  $VMCPUNumCpu = $vm. NumCpu

  $VMCPUCores = $vm. ExtensionData.config.hardware.NumCoresPerSocket

  $VMCPUSockets = $VMCPUNumCpu / $VMCPUCores

  $GroupedRealTimestats = get-Stat-entity $vm - $Stattypes - Instance-Realtime Stat ' "-ErrorAction SilentlyContinue | MetricId Group-Object

  $RealTimeCPUAverageStat = '{0:N2}' f $($GroupedRealTimestats |) Where {$_.} Name - eq "cpu.usage.average"} | Select-Object - ExpandProperty group | Measure-object-value average | Select - Object - ExpandProperty average)

  $RealTimeCPUUsageMhzStat = '{0:N2}' f $($GroupedRealTimestats |) Where {$_.} Name - eq "cpu.usagemhz.average"} | Select-Object - ExpandProperty group | Measure-object-value average | Select - Object - ExpandProperty average)

  $RealTimeReadystat = $GroupedRealTimestats | Where {$_.} Name - eq "cpu.ready.summation"} | Select-Object - ExpandProperty group | Measure-object-value average | Select-Object - ExpandProperty average

  $RealTimereadyvalue = [math]: tour ($(($RealTimeReadystat / (20 * 1000)) * 100), 2)

  $Groupeddaystats is entity-Stat-get $vm - Stat $Stattypes - beginning (get-date). AddDays(-1)-done (get-date) - IntervalMins 5 - Instance ""-ErrorAction SilentlyContinue | MetricId Group-Object

  $dayCPUAverageStat = '{0:N2}' f $($Groupeddaystats |) Where {$_.} Name - eq "cpu.usage.average"} | Select-Object - ExpandProperty group | Measure-object-value average | Select - Object - ExpandProperty average)

  $dayCPUUsageMhzStat = '{0:N2}' f $($Groupeddaystats |) Where {$_.} Name - eq "cpu.usagemhz.average"} | Select-Object - ExpandProperty group | Measure-object-value average | Select - Object - ExpandProperty average)

  $dayReadystat = $Groupeddaystats | Where {$_.} Name - eq "cpu.ready.summation"} | Select-Object - ExpandProperty group | Measure-object-value average | Select-Object - ExpandProperty average

  $dayreadyvalue = [math]: tour ($(($dayReadystat / (300 * 1000)) * 100), 2)

  $Groupedweekstats is entity-Stat-get $vm - Stat $Stattypes - beginning (get-date). AddDays(-7)-done (get-date) - IntervalMins 30 - Instance ""-ErrorAction SilentlyContinue | MetricId Group-Object

  $weekCPUAverageStat = '{0:N2}' f $($Groupedweekstats |) Where {$_.} Name - eq "cpu.usage.average"} | Select-Object - ExpandProperty group | Measure-object-value average | Select - Object - ExpandProperty average)

  $weekCPUUsageMhzStat = '{0:N2}' f $($Groupedweekstats |) Where {$_.} Name - eq "cpu.usagemhz.average"} | Select-Object - ExpandProperty group | Measure-object-value average | Select - Object - ExpandProperty average)

  $weekReadystat = $Groupedweekstats | Where {$_.} Name - eq "cpu.ready.summation"} | Select-Object - ExpandProperty group | Measure-object-value average | Select-Object - ExpandProperty average

  $weekreadyvalue = [math]: tour ($(($weekReadystat / (1800 * 1000)) * 100), 2)

  $Groupedmonthstats is entity-Stat-get $vm - Stat $Stattypes - beginning (get-date). AddDays(-30)-done (get-date) - IntervalMins 120 - Instance ""-ErrorAction SilentlyContinue | MetricId Group-Object

  $monthCPUAverageStat = '{0:N2}' f $($Groupedmonthstats |) Where {$_.} Name - eq "cpu.usage.average"} | Select-Object - ExpandProperty group | Measure-object-value average | Select - Object - ExpandProperty average)

  $monthCPUUsageMhzStat = '{0:N2}' f $($Groupedmonthstats |) Where {$_.} Name - eq "cpu.usagemhz.average"} | Select-Object - ExpandProperty group | Measure-object-value average | Select - Object - ExpandProperty average)

  $monthReadystat = $Groupedmonthstats | Where {$_.} Name - eq "cpu.ready.summation"} | Select-Object - ExpandProperty group | Measure-object-value average | Select-Object - ExpandProperty average

  $monthreadyvalue = [math]: tour ($(($monthReadystat / (7200 * 1000)) * 100), 2)

  $Groupedyearstats is entity-Stat-get $vm - Stat $Stattypes - beginning (get-date). AddDays(-365)-done (get-date) - IntervalMins 1440 - Instance ""-ErrorAction SilentlyContinue | MetricId Group-Object

  $yearCPUAverageStat = '{0:N2}' f $($Groupedyearstats |) Where {$_.} Name - eq "cpu.usage.average"} | Select-Object - ExpandProperty group | Measure-object-value average | Select - Object - ExpandProperty average)

  $yearCPUUsageMhzStat = '{0:N2}' f $($Groupedyearstats |) Where {$_.} Name - eq "cpu.usagemhz.average"} | Select-Object - ExpandProperty group | Measure-object-value average | Select - Object - ExpandProperty average)

  $yearReadystat = $Groupedyearstats | Where {$_.} Name - eq "cpu.ready.summation"} | Select-Object - ExpandProperty group | Measure-object-value average | Select-Object - ExpandProperty average

  $yearreadyvalue = [math]: tour ($(($yearReadystat / (86400 * 1000)) * 100), 2)

  $data = New-Object psobject

  $data | Add-Member - MemberType NoteProperty-VM name-value $vm.name

  $data | Add-Member - MemberType NoteProperty-name VMTotalCPUs-value $VMCPUNumCpu

  $data | Add-Member - MemberType NoteProperty-name VMTotalCPUSockets-value $VMCPUSockets

  $data | Add-Member - MemberType NoteProperty-name VMTotalCPUCores-value $VMCPUCores

  $data | Add-Member - MemberType NoteProperty-Name ' in time real average usage % "-value $RealTimeCPUAverageStat

  $data | Add-Member - MemberType NoteProperty-name "Mhz real-time use" - value $RealTimeCPUUsageMhzStat

  $data | Add-Member - MemberType NoteProperty-Name "loans in time real %"-value $RealTimereadyvalue

  $data | Add-Member - MemberType NoteProperty-name ' day average use % "-value $dayCPUAverageStat

  $data | Add-Member - MemberType NoteProperty-name of the "day use Mhz"-value $dayCPUUsageMhzStat

  $data | Add-Member - MemberType NoteProperty-Name "ready day %"-value $dayreadyvalue

  $data | Add-Member - MemberType NoteProperty-"week average use name% '-value $weekCPUAverageStat

  $data | Add-Member - MemberType NoteProperty-Name "week use Mhz"-value $weekCPUUsageMhzStat

  $data | Add-Member - MemberType NoteProperty-"week loan name% '-value $weekreadyvalue

  $data | Add-Member - MemberType NoteProperty-' months average use name% '-value $monthCPUAverageStat

  $data | Add-Member - MemberType NoteProperty-Name "month use Mhz"-value $monthCPUUsageMhzStat

  $data | Add-Member - MemberType NoteProperty-' months loan name% '-value $monthreadyvalue

  $data | Add-Member - MemberType NoteProperty-name ' year average use % "-value $yearCPUAverageStat

  $data | Add-Member - MemberType NoteProperty-name ' year use Mhz "-value $yearCPUUsageMhzStat

  $data | Add-Member - MemberType NoteProperty-Name "ready year % '-value $yearreadyvalue

  $data | Add-Member - MemberType NoteProperty - name VMHost-$esxi.name value

  $data | Add-Member - MemberType NoteProperty-name VMHostCPUSockets-value $esxiCPUSockets

  $data | Add-Member - MemberType NoteProperty-name VMHostCPUCores-value $esxiCPUCores

  $data | Add-Member - MemberType NoteProperty-name TotalVMhostCPUs-value $TotalesxiCPUs

  $data

  } #foreach ($vm in $vmlist)

  } #foreach ($esxi in $(Get-VMHost $Name))

  } #process

  } #Function-prepare you

  Get-VMHost | Get ready

• As a virtual machine - combat ThreadMaster Citrix?

  I have a problem with some Citrix server (Win2k3) by which a bad quality app is able to completely max box pretty much completely kill him.  VM 2 vCPU allocated, the server is R610.  vSphere CPU trace shows 100% CPU when it does happen, and on the occasion that I had access to the consoles surviving the Task Manager shows the thugs or the process, each single-threaded, operating at 100% by heart (i.e. 50% of each if there were two).

  A quick google led me to ThreadMaster (blog about it here).

  It was not so much a problem on the physical servers because they have 8 cores, where two (or more) questionable process still left a lot of free CPU resource.

  Any ideas or experiences would be greatly appreciated bre!

  Perhaps, internal Citrix CPU management tools can help out...? (who have been fired from RTO if I'm not mistaken)

  Take a look at this video:

  http://www.Citrix.com/TV/videos/1361

  Allocation of points if my answer was helpful, think

• RAC with Oracle VM and Windows Server

  Hi all,
  
  We want to implement the system with Oracle database 11g or 10g 64 bit (CARS) on the OS of Microsoft Server 2008/2003. We do not have enough licenses for all the hearts, and we want to find a way to implement the RAC database with existing licenses.
  
  Is this a good solution to use virtualization, as Oracle VM?
  How much is safe to use virtualization?
  Can we do Oracle Real Application Clusters (RAC) environments Oracle VM with Windows Server 2008 64-bit (or 2003 Server) operating system and use hard partition?
  Is it better to invest in licenses or try with Oracle VM?
  
  
  Oracle VM can be configured so that it is recognized as a difficult score.
  Hard partitions allow customers of one license these CPU used by the partition instead of license all the processors on the physical server.
  Source: oracle.com
  
  
  Thank you!

  Virtualization is not certified for Oracle RAC on Windows.

  + Software on Oracle VM [464754.1 ID] + notes States certified:

  Oracle Real Application Clusters (RAC)
  
      Oracle 10.2.0.4 and up (10gR2) and 11.1.0.7 and up (11gR1) and 11gR2 RAC for Linux x86 and Linux x86_64 certified on Oracle VM
          Guest OS: Oracle Linux 5.1 (and above) RHEL 5.1 (and above) for Linux x86 / Linux x86_64
          Paravirtualized (PV) mode only (Guest OS and drivers)
          Only supported on Oracle VM 2.1.2 and above
          Live-migration of an Oracle RAC VM is supported with Oracle VM 2.2.1 and above.
          Previous versions are not supported. Please refer to this link for best practices.
  
          Over-committing CPUs is not recommended, but supported with the following restrictions:
              The total amount of VCPUs allocated to guest domains (running Oracle RAC guests), should not exceed
              two times (2x) the amount of real CPUs / cores in the Oracle VM server.
              The amount of VCPUs allocated to a single guest domain should not exceed the amount of real CPUs /
              cores in the Oracle VM server.
              Maintain Oracle VMs default VCPU allocation for dom-0: Oracle VM will allocate 1 VCPU for each real CPU or core to dom-0.
              CPU pinning is only recommended for hard partitioning. If no hard partitioning is required, CPU pinning should not be used.
  
          Static support only (dynamic support is being planned):
              Dynamic resizing of guest virtual machine is not supported (VCPU, memory and I/O)
              Virtual Machine Pause/Restore of an active Real Application Cluster virtual machine is not supported. 
  

• Correct allocation of resources to VM CPU with hyperthreading VCPU ESXI 5.5

  Hello

  I've read various articles on trying to size of the allocation of CPU for virtual machines and performance of subjects with overcommitting, but still can't seem to find a definitive answer with hyper threading involved for this particular configuration and hoped that someone could clarify for me.

  Example 1 - Exchange Server 2010

  1 x 6 Core Processor (12 logic with hyper threading)

  There are currently 1 socket and 6 hearts are attributed to him on a possible 12.

  There is only 1 virtual machine running on the server. I would benefit from an increase in the nuclei of one of the following:

  1 outlet, 12 hearts

  6 sockets, 1 core

  12 Sockets, 1 core

  any other configuration?

  Example 2 - server has 2 x 6 Core processors with Hyper threading enabled. (12 cores, 24 logic)

  I want to attribute 2 physical cores to VM1, VM2 4 physical hearts and 6 physical cores to VM3

  Who would do the following:

  VM1 - 1 taken, 2 hearts VM2 - 1 socket, 4 cores VM3 - carrots 1 Socket 6

  VM1 - 1 socket, 4 core VM2 - 1 socket, 8 cores VM3 - 12 hearts 1 socket

  VM1 - 2 taken, 1 core VM2 - 2 Sockets, Sockets 4 hearts 2 VM3, 6 cores

  VM1 - 2 taken, 2 hearts VM2 - 2 taken, 8 cores VM3 - 2 taken, 12 hearts

  VM1 - 2 taken, 1 taken VM2 - 4 kernel, 1 core VM3 - 6 sockets, 1 core

  VM1 - 4 taken, 1 core VM2 - 8 Sockets, 1 core VM3 - 12 Sockets, 1 core

  any other configuration?

  No, you can allocate more vCPU you have. what you said it is fine. I usually go for a ratio of 6: 1. for example, with 12 cores, we have up to 72 vCPUS (it's all compared to the workload type and the size of the virtual machine through)

  I said that you never allocate a unique virtual machine more than the physical cores as the guest on the virtual machine OS think there full hearts to play with no hyper threaded no carrots...

  But hyper threading can give use better ability to commit the resources of the processor because it intelligently uses the additional threads when the performance will not be affected. as long as all virtual machines will not work 100%, then you can add more with no real impact. If you have listed these 3 VMs had to use 100% each you'd be using 100% CPU host not 50%. never use logical cores when it comes to calculations of ability only physical cores

  See you soon

• VM will use only 50% of the resources allocated vCPU

  I have a windows 2008 64 bit VM with 4 vCPU who seems to never use up to 50% of the handsets of CPU resources. Each CPU seems to be well balanced, but will never go beyond 50%. I do not see and as for example allocation of resources, limiting the amount of CPU that is given. I use this virtual machine on a dedicated v4.1 ESXi host.  Doesn't seem to be any challenge. Any ideas why it seems to be limited to only 50% of the available CPU? There is no other virtual computer running on this host at this point...

  Doesn't seem to be any challenge. Any ideas why it seems to be limited to only 50% of the available CPU?

  Now, you see one of the MANY reasons for which multi CPU VM are a WASTE!  This is what we are trying to illustrate them, thanks to prove our point!

  It is applications that drive CPU, if the applications are not multi threaded or SMP, you cannot take advantage of the CPU unless APPS are SPECIFICALLY written for her.

  In a virtual machine, it did a great job to demonstrate how inept apps really are...

• vCPU on allocation.  Good idea, bad idea?

  Currently we have vCPUs twice the physical processors.  Is that necessarily a bad thing?  If all goes well, I'll change that to have more vCPUs closely match the physical CPU.  But for later use, we should avoid allocation vCPUs?  I have not found anything in the documentation on this subject...

  We have vCPUs twice the physical processors.  Is that necessarily a bad thing?

  No it's called ratio consolidation.  You can have up to 8 vCPU by heart on ESX, which is the starting number, but because of this, you must configure ONLY machines with the CPU you NEED not what the people want.  People think in terms of physics vritual not and they do not understand the difference.  The difference is the performance.  You can give a VM 2 vCPU but if not using the CPU which is a waste product, performance test is the key.

• Allocation maximum vCPU for Windows Server 2008 Enterprise running on vSphere 4 Enterprise (ESXi 4.1)

  Hello

  I have a guest of Windows Server 2008 Enterprise (x 64) running on ESXi 4.1 with a vSphere Enterprise license 4. I believe that the comments and hypervisor should be allowed for and support 8 virtual processors, but when I add more than 4 and try to turn on the virtual machine, I get "market of the VM [virtual computer name] Virtual machine has 8 virtual processors but the host only supports 4. The number of virtual processors can be limited by the selected guest OS for the virtual machine or the granting of licenses for the host".

  The selected guest OS is 'Microsoft Windows Server 2008 (64-bit)'. There is no option in the drop down menu to 2008, Enterprise Edition.

  This configuration is actually supported? If so, what should I do to get it working?

  Thanks in advance,

  Matt

  Hi Matt.

  .. .on ESXi 4.1 with a vSphere Enterprise license 4...

  For vSphere 4, you need an Enterprise Plus license if want to create 8 vCPU VMs.
  In vSphere 5 will do a license...

  / Rubeck

• allocation of multiple vCPUs - unipolar or multicore?

  I am allocating multiple vCPU to a Windows VM guest.

  Is it better to allocate 4 vCPU core or two bicoeur vCPU?
  How do we decide?
  Does still make any difference? - and if so, which is the best way to do it?

  I know that CPU can be the most difficult resource maximum in a cluster of small vSphere hosts 2-3 and that memory is the most important resource.
  Thank you, Tom

  with what you use, what it won't make a difference if you run 4 vcpu simple, 2 dual vcpu-core or single core quad vcpu - all exactly the same thing will happen.

• vSphere PowerCLI - of different values on the Allocation of resources and 5.1

  Hello

  I have a situation where I was trying to follow in one of our virtual machines that could miss the unlimited check mark on the allocation of memory to the title resources. In doing so, I was in a situation where powerCLI shows values different vsphere for memory and cpu shares until I removed and add the check unlimted box and clicked on OK.

  I guess my question is double.

  1. How will I know if the virtual machine variety is actually being allocated resources properly when there is this difference.

  2. If it's just a property not being pulled to the PowerCLI correctly I presume I can ignore it? If this isn't the case, you know another way to have it acknowledged correctly so I must not go through a hundred servers again and manually perform this procedure.

  Finally, if there is a real problem with the assigned resources hurt if I go through this process and now everything gets double maybe will we have problems with guests not being is not able to manage the new distributions?

  That's what it looks like, top is a bad server and down is a server has been fixed.

  Name: Server01

  MemoryMB: 4096

  NumCpu: 2

  VMResourceConfiguration: CPUShares: Normal / 1000 MemShares: Normal / 25600

  Name: Server02

  MemoryMB: 4096

  NumCpu: 2

  VMResourceConfiguration: CPUShares: Normal / 2000 MemShares: Normal / 40960

  Hope it makes sense.

  Thanks for any idea you may have.

  Shane

  PS... is it just me (IE11) or can't you copy and paste in the editor on this community?

  There is indeed a minor flaw in the value of the shares shows PowerCLI.

  To begin with, what you get for fixed levels are well documented.

  See the distributions of resources

  Which can be seen in the vSphere for a VM client

  

  It is a virtual machine that has 2 vCPU (2 x 1000)

  The cmdlet Get-VMResourceConfiguration to the PowerCLI returns the value that is actually in the VirtualMachine object.

  This value does not seem to take into account the fact that the virtual machine has 2 vCPU, while the vSphere client does not seem to take into account of the # of vCPU.

  

  You can check by doing

  Get - VM MyVM | Select the Name,@{N="CPU actions; E={$_. ExtensionData.Config.CpuAllocation.Shares.Shares}}

  However, if the level of shares is not personalized, the SDK Reference tells us "that if the level is not set to custom, this value is ignored."

  See SharesInfo

  In conclusion, the cmdlet PowerCLI is correct, it returns the value that is there, but this value is irrelevant unless the level is set to Custom.

  PS: I seem to have no problem to copy and paste in the editor.

  Have you tried with another browser?

• Determine the use of vCPU using PowerCLI

  Is there a way to determine how many vCPUs uses makes it a virtual machine using PowerCLI?  For example, suppose you try to size just your virtual machines with powerCLI.  If the virtual machine uses several threads, it can use the multiple vCPUs.  If it is mono-thread, it can only use one vCPU even if she has a high workload.  You can determine what virtual machines have multiple vCPUs but use less than they are allocated?

  As much as I know there is no meter that indicates if a core is used or not.

  What you could do, is the use of the CPU, and then check if the assigned processors are required.

  For example, suppose that the average CPU usage is 25%, and the maximum is 50%.

  If this VM has 4 processors assigned, you may deduct 2 CPUs would be sufficient.

  But this isn't an accurate calculation.

  Once you lower the processors assigned to the virtual machine, you will need to see if there's an obvious increase of the ready time.