Allocation of the CPU to a guest VM issue

Similar Questions

• Allocation of the CPU 4 to Windows Server 2003 questions?

  Hi all

  I have a VM with Windows Server 2003 R2 SP2 64-bit running as a virtual machine, and when I assign the 4 CPU, it shows only one?  Is it by design or it should show all 4 in the information system?

  Search for new hardware?  Have you checked the HAL in Device Manager to verify that this is a multi HAL processor?

• Unique guest VM uses 100% of CPU Guest, but only 7% of the CPU host (includes screenshots)

  We have a Dell T420 ESXi 5.5 server.  The host has to a single UC E5-2407 (4 Core 2.2 GHz without Hyperthreading), 16 GB of RAM and RAID storage.

  The host runs a single VM Windows Server 2008, which was a P2V conversion.  The virtual machine is currently assigned 1 Plug and 4 Cores, corresponding to the host CPU.

  Since implementing this server about a year ago, he had a problem recurring pop up every few months.  When the problem occurs, the Server 2008 VM suddenly max use of the processor and the terrible performance, but CPU is be contributed to the maximum, not by a single program, but several normal processes.  For example, WMI, explorer.exe and the Task Manager may show all 30% CPU usage.  In the meantime, even if the guest virtual computer has 100% CPU usage, the host will show only using 300 to 500 MHz of CPU, or about 7% of available.  It comes despite the fact that it is the unique virtual machine and has full reign of all the resources of the host.  If the problem seems to be not with an abnormal load on the Guest VM, but less than the resources of the host.

  Restart the virtual machine does not correct the problem, and restart, which normally takes only a few minutes, lasts 30 minutes.  In the past, restart the ESXi host temporarily solved the problem, however it popup until today and persists even after several reboots of ESXi host.  See the attached screenshots for parameters and symptoms:

  

  It's the performance monitor virtual machine, whereas the problem that happens.  Notes on the virtual machine, Windows 2008 reports 100% of a core 2.2 GHz CPU 4 CPU usage, while the side host, the CPU usage never goes 626 MHz.

  

  Here are the counters of the State whereas the problem that happens.  When you start the virtual machine, the WAIT and SLOW counters were quite high, but they finally dip down when startup is complete.

  

  Here are the parameters and the stats of the ESXi host.

  

  Here are the parameters and the stats of the guest VM so that the problem that happens.

  Other troubleshooting steps:

  We changed number of vCPU on the VM from 4 to 1, without change.

  We put the CPU reserve for the VM to 50% and 100%, no change.

  The machine virtual was version 8 and we have updated to version 9, no change.

  Has anyone ever experience this problem?  Any help towards a solution would be appreciated.

  Hello

  I would say that it is somehow related to the fact that the VM was converted from physical server. Here are a few questions you should ask yourself:

  Type of CPU on the computer old physical host and VM match? At least seller of CPU? It goes the same for the chipset: are there different chipset vendor on the two hosts?

  What type of card NETWORK VM uses?

  Has uninstalled the drivers card mother/CPU specific converted VM? The VM tools are installed?

  Uninstall the old drivers of VM, currently they are not visible in the Device Manager here some is read: http://itknowledgeexchange.techtarget.com/virtualization-pro/removing-old-hardware-after-a-p2v-conversion/

  I would also check the BIOS of the server - maybe there is some sort of option for active energy that interfere with the VM?

• Help. The CPU has been disabled by the guest operating system. Power off or reset the virtual machine. WHY?

  Greetings.

  I have a 5.5 with an operating system Red Hat 5.10 ESXi environment. The OS worked fine until a few days ago. ESXi displays the error "the CPU has been disabled by the guest operating system. Power off or reset the virtual machine. I Don t know why my server displays the error if my environment was OK. Could be a kernel problem? operating system problem?

  Ideas?

  Thanks for the help.

  Have a look here. http://KB.VMware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalID=2000542

  Did you recently patch your VM? Looks like when the guest operating system runs the incorrect commands that it can have a deactivated processor.

• The CPU usage rises, more than a few hours until the application crashes

  I wrote an application to control the antennas of the ship. I met all the requirements of the customer. However, when I run my application the CPU starts around 13% (depending on the mode) and slip about 5% every 30 minutes, until finally the use reached 100% and not surprisingly the application stops responding.

  My application communicates with the antenna via the serial connection. I have an interface for a remote connection via the local area network that uses the TCP protocol and I broadcast UDP packets on the local network for use by other ship systems (sharing data such as ships Cap etc.). The 3rd party who wrote the remote application used my UDP broadcast as a way to receive data from my application.

  My application has several vi. Should I these zip and attach?

  Any help or pointer as to why its use goosebumps would be welcome. My initial feeling is that a buffer is full to bursting, but where and who? I use tax filers to communicate between the loops and have a few global variables that communicate my menu selection.

  Thank you

  Steve

  Steve S of a. in writing:

  It is certainly my application.

  I noticed that I got from reporters that contain groups inside a loop and have not released. If the Notifier is created each iteration and not released, this would cause the problem?

  WELL YES!

  Resources should be allocated (created declarant) before the loops, then a ref use din the loop. Only when the loop is complete must it be closed.

  Your zip code if you want us to look more closely.

  Ben

• follow-up of the CPU

  Hello

  I recently inherited several servers that use BB. Apparently the administrator previous really like BB, but just left default settings. I am now trying to tweak it, so it may be of some use.

  I have several servers with hot cpu. Normal cpu settings are: warning - criticism, 150 - 300. These servers are usually always more than 300, often much higher. I want to continue to monitor these servers, but I want to disable paging and warning for these particular servers. I understood how to change the threshold, but I'm not sure how to keep just the cpu, or any other control, alert. It seems to me that controls and alerts are both on or off, no selectivity. I'm sure I'm wrong, I did have the opportunity to really dig into the docs to understand.

  If someoe could give me any advice, or a small example of what I need to change, I'd appreciate it.

  Thank you.

  Daryl

  to alert, simply read the docs on the notification. In addition, you can read and modify etc/bbwarnrules.cfg. Use the! qualifier of a rule to avoid any notifications that match the criteria. That is to say

  for BBPE

  !*;; CPU; *;*;*;*

  prevent notifications on any CPU event (for guests).

  If you want to have your CPU column to green, you can either set the values CPUWARN/CPUPANIC bbdef - customers (and restart the BB) or insert enties in etc/bb-cputab (if she is not there, use bb-cputab. DIST as a template)

  Good bye

• Agent VMWarePerformance collected by the CPU usage of each processor for virtual machines? (RS 2195132)

  Hi all

  -SR: 2195132

  -Customer: Table Services

  -Environment:

  Foglight for virtualization 6.8 (V5.6.7 Foglight)

  V5.6.7 VMWare cartridge

  V5.6.7 Infrastructure cartridge

  Problem/Question:

  Agent VMWarePerformance collected by the CPU of each processor usage?

  I checked the following for 3 VM location, and I found the following metrics collected for each processor:

  Hosts | All hosts. | Processors | Porcessors | | In detail

  Hour system percentage

  Used Hz

  

  My client was originally IC agents set up to monitor some of its VM guests who were also controlled by the VMwarePerformance officer. This caused churn so I asked him to turn off the discs of CPU, memory and network of collections of IC officers. After he disabled the collections he concluded that processors CPU Utilization was no longer available. It is a measure he needs. If this is not available from the agent of VMWarePerformance then add us hosts to the blacklist of the user and re - activate the CPU, disk, memory and network of collections of IC officers.

  Thank you

  Karen Smithwa

  Use as a percentage is not captured.  Enter us Hz used and we could derived that UC via derived metric.

• 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

• ESXI4.1 has how often is DRS control the CPU usage?

  ESXI4.1 has how often is DRS controls the use of the CPU on the host?

  I have 16 ESX host. Some of the hosts reach very hight CPU use, up to 98%, although some are as low as 52%. I understand DRS moves virtual machines only when you have to. I wonder how often it checks. Is there a set period of time, or DRS works in real time to check the hosts. Virtual machines are finally left guests busy, although guests were constantly busy today, about 90% + CPU, while some have been systematically 50%.

  On the 16 hosts, we have configured 1 host failover capability and the current capacity of 11 host failover. Affinity rules apply only to a limited number of virtual machines (about 6) of about 300.

  By default DRS is called every 300 seconds.

  Best regards, Robert

• Problems after changing the CPU!

  Hello, I have a problem!

  I use a motherboard ASUS with two CPUS (Xeon 5205). Now a single processor's fault! So, I need to change both CPU because I did not have a single CPU XEON 5205.

  I get Xeon 5405 2 new processors and averything works very well!

  The ESXi Machine I have two guests. A Windows 2003 32-bit in English. This comments works fine. Other STI comments 2008 RC2 64 Bit English Windows Server. On this comment, I get the Message:

  File: Windows\System32\Winload.exe

  Status 0xc000035a

  Info: To load a 64-bit application, but this processor is not compatible with the 64-bit mode.

  I read on the CPU that this processor is valid to run Applications in 64-bit Mode!

  So, what can I do?

  Thank you d ' award!

  Greetings from the Germany!

  
  
  M.Burkhardt

  Hello

  a BIOS upgrade may solve the problem.

  I recommend you check out this doc large vmware:

  http://communities.VMware.com/docs/doc-8978

  Maybe it helps

  Best wishes / Saludos.
  Pablo

  Please consider awarding

  all useful or correct answer. Thank you!! -

  Por favor considered premiar

  any respuesta correcta o util. ¡¡MUCHAS gracias!

  Virtually noob blog

• Use of the CPU VM

  I have a virtual machine that frequently pegs on the CPU at 100%. He is currently in a resource pool where actions = normal and limit = unlimited.

  It is not that there is a conflict of CPU with other virtual machines. should I guess there is a problem specific to this virtual machine? The tools are obsolete, so that will be addressed this afternoon. The application is Informatica and I am limited to application 1 CPU due to licensing with Informatica. Drive on a San, and neither the C & F is aligned block.

  Other than anything that is not correct, what is the best way to give this specific virtual machine more CPU at the moment?

  TIA

  Take a look at the last post. http://communities.VMware.com/message/1588317#1588317

  I'll try with less than hearts. If you get good results with 2 hearts then renewal or maintenance may be less costly. You will have more resources to be allocated to other virtual machines.

• Deadline the CPU.

  Hi guys have an ESXi newbie question.

  I put ESXi on a test machine.  Pentium 4 2.8 GHZ.

  When I check the allocation of resources. The deadline for reservation of CPU is 1539 MHZ.

  How do you calculate this limit?  Is this something that can be changed?

  2. in general do I have to set the CPU limits or can I just put it in unlimited?

  By default, the limit of the reserve is equal to the difference between the cycles available total CPU physical in the Active Server less than CPU cycles used by the vmkernel, virtual running machines and what is reserved by the pools VMa and resources - so in your example, there is 1539 MHz available that can be reserved.

  With regard to the limits - I wouldn't recommend playing them - the VMkernel does a great job of scheduling so when your virtual machine needs, it is available and when it is not required, it is returned in the pool-

  If you find this or any other answer useful please consider awarding points marking the answer correct or useful

• The CPU used by the resource manager.

  Hello
  in 10g R2, I created a Plan for DBMS resources manager:

  EXEC DBMS_RESOURCE_MANAGER.CREATE_PENDING_AREA();
  
  EXEC DBMS_RESOURCE_MANAGER.CREATE_SIMPLE_PLAN(SIMPLE_PLAN => 'simple_plan1',CONSUMER_GROUP1 => 'mygroup1', GROUP1_CPU => 80,CONSUMER_GROUP2 => 'mygroup2', GROUP2_CPU => 20);
  
  
  ALTER SYSTEM SET RESOURCE_MANAGER_PLAN ='simple_plan1';
  
  
  
  EXEC DBMS_RESOURCE_MANAGER.SWITCH_CONSUMER_GROUP_FOR_USER ('SCOTT', 'MYGROUP2');
  EXEC DBMS_RESOURCE_MANAGER_PRIVS.GRANT_SWITCH_CONSUMER_GROUP ('SCOTT', 'MYGROUP2', TRUE);
  
  
  EXEC DBMS_RESOURCE_MANAGER.SUBMIT_PENDING_AREA;
  
  EXEC DBMS_RESOURCE_MANAGER.CLEAR_PENDING_AREA;

  Now, SCOTT runs the following (example from 24 through the database manager):

  DECLARE
  m NUMBER;
  BEGIN
  FOR i IN 1..100000 LOOP
  FOR j IN 1..100000 LOOP
  /*
  * The following query does a cartesian product without
  * a predicate and takes up significant CPU time.
  */
  select count(*) into m from v$sysstat, v$system_event;
  END LOOP;
  END LOOP;
  END;
  END;
  /

  And CPU use goes to 100%. Why? According to its consumer group should not only have 20% of CPU?
  
  No explanation?
  Thank you.

  Hello

  user522961 wrote:
  And CPU use goes to 100%. Why? According to its consumer group should not only have 20% of CPU?

  A quote from docs explained:

  The currently active resource plan does not have the limits of the allowance until the CPU usage is 100%. If the CPU usage is less than 100%, the database is not related to the CPU and there is therefore no need to enforce limits to ensure that all the sessions to get their allocation of designated resources.
  In addition, when the limits are applied, allowance unused by consumer groups can be used by other groups of consumers. In the previous example, if the SALES group does not use all of his allowance, the Resource Manager allows the group to MARKET or DEVELOP it group to use the unused allocation.

• A process that maintains a lock can lose the CPU?

  Fairly theoretical question:
  On a busy system, is it possible for the OS Scheduler move a process that currently hold a lock on the CPU? (possibly wait while other processes turn the latch as well...)
  
  I'm sure that its unlikely, given that the locks are held for a short time. I wonder if Oracle has taken steps to ensure that this will not happen, or if it is always theoretically possible.
  
  Its a yes / no question, but I'm actually looking for a method that I can use to discover this.

  Yes, certainly.

  It would be one of the reasons for the recommendation to not change the priorities of oracle process in Unix Scheduler - a 'low' priority process holds a resource (for example a latch) may affect a process 'priority' simply because the process of 'low' priority is not allocated CPU scheduler for unix.

  "Locks" are Oracle implementations to protect memory structures in the SGA. The Unix Scheduler is not really care what "internal" resources are 'held' by a process when it moved a process in and out of the race-queue.

• "Installer" taking up the CPU

  I have an iMac end of 2012, and lately he worked very slowly. A few days ago, I checked the activity monitor to see "Installer" take a lot of CPU. I leave and rejected it as an error, but sometimes it starts to do it again.  I just kept smoking them until I found several installers taking up half of the space of the CPU. I did some research and I read that the Genio virus, but there is no house icon in the upper right corner and I just can't find any files for it.

  Can download some adware or malware.  A simple, fast and safe way to remove adware and malicious software is to download and to use Malwarebytes Anti-Malware for Mac. There has been developed by one of the most respected contributors and the top of the page in these forums and recommended by almost all of the top contributors here.

  If you prefer to do it manually, follow these instructions in the site theSafeMac.com (author of Malwarebytes): adware removal Guide

  If you want to check to see what adware/malware, you may have before you run Malwarebytes and then download and run Etrecheck.  Copy and paste the results in your response. Etrecheck is a diagnostic tool that has been developed by one of the most respected users here (and recommended by Apple Support personnel) of the CSA to provide an overview of the system and help identify the most obvious culprits that can adversely affect the performance of a Mac.