Percentage of loans processor multi vCPu VMs threshold

Similar Questions

• Mix single vCPU with Mutiple vCPU VMs VMs

  Hello

  Is there any impact to the unique blend vCPU VMs and mutiple vCPU virtual computers on the same host ESXi?

  Kind regards

  No, no matter how mix you VMs vCPUs different counts. Each vCPU/VM is planned individually from each other.

  As long as you approve too vCPUs (busy) on a host computer, you are right, of course, which applies no matter whether or not all the virtual machines have the same amount of vCPUs.

• Two-processor Multi Core processing Parrell Question

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  Hey guys

  I'm looking for a little clarification on an issue with parrell treatment in LabView. If I have a dual processor with two 4 core CPU computer will be able to access all 8 cores in the LabView environment. I presume he can use carrots that can see the operating system?

  Thanks for the help,

  Tom

  Norbert B has written:

  It is the work of the operating system that applications may use all of the hearts, if necessary. So for the application itself, it should make no difference if the system (hardware) is MultiCPU, multicore, or even simply Hyperthreaded...

  Norbert

  It's true, but I would like to add my 5 cents here.

  Lets say, if you have a simple loop like

  While (true) {}

  do something

  }

  then OS will get a chance to run in multiple threads. So you get max 12.5% CPU load to 8 core PC or 50% max on dual core PC.

  I have dual core PC now and allows to check:

  

  Thus, as we can see - 50% CPU load reached (a single core charge more, but its a different story).

  Well, if we are going to use two while loops, then we will get 100% load:

  

  Of course, if you need to load all 8 cores, you should have 8 parallel loops.

  Compare BD above with the following:

  

  We have two functions of minmax table and they independently, but we have only 50%.

  Well, you can get also the 100% CPU utulization inside while loop. In th example below, you have two sub - VI, who called in the same loop:

  

  Here we have 100%. Important, these screws must be reenterant!

  See what happened if they reeenterant not:

  

  Now a little about the Vision. Most of the SubVIs Vision behind are DLL calls. Some features of Vision already optimized for the multicore performance. For example, the convolution:

  

  On the comic above, we have a simple loop with a Subvi, but two cores are used (convolute itself already optimized for the core multi car).

  Remember, not all functions of Vision optimized yet. For example, low-pass still single-threaded (compare this BD BD above):

  

  Of course, we can use multi hearts - just perform a parallel execution (you must split the image for both parties, and then to unite and so on):

  

  Remember, SubVIs must be reeentrant, and all calls DLL must be thred safe (not in the UI thread). Also good idea to stop debugging in such experiences to eliminate the additional CPU load.

  Another point on 8 cores. As far as I know, LabVIEW (and application on LabVIEW) will support only 4 cores within a default delivery system (at least before LabVIEW 2009). If you have need for all 8 cores, then you must add a few lines in LabVIEW.ini. See the thread next where you can find more details:

  Interpolate 1 d slow on computer 8 hearts

  Hope that everything written above was correct.

  Thanks for reading and best regards.

  Andrey.

• Processore multi. Dubbio utilità!

  Hello to all,

  Sempre in via di implementazione di a nuovo server, mi è UN grosso dubbio towards the UN doppio processore di utilità sorto.

  The macchina, che ospitera I due processori sara 5.1 esxi host sul quale will be create 6 VM.

  ORA he dubbio e he following:

  Partendo dal presupposto che non tutte sono applications created by United Nations use a doppio processore

  a che VM di Esxi 5.1, despite the assegnate vCPU, quello che e sehen he processore reale...

  e giusto Winegardner all' price di a CPU di questo tipo con server is poi applications non sono in grado di sfruttarla?

  CI sono di Esxi che intervengono functional in tal senso?

  Grazie a tutti,

  the occasione, con e tanti wishes!

  In realtà is a ' application e written by usare UN solo processore hai no tanto spazio di better a level is di vHardware... osserverai in ogni caso use di una vCPU.

  In ogni caso vale regola di VMware aurea: assegna it minor number of vCPU possibile (partendo da 1 ovviamente) ed aumenta risorse della VM in virtù di reali need.

  Ciao!

  --

  Rocco Sicilia

  http://www.roccosicilia.it

• Get ID for the processor affinity vCPU!

  Hello

  While my reading (wisely understand possible case of the processor affinity), I cam cross vsish, the question is how to identify the logical processors belongs to the same taken as an example and get his number to be configured for the processor affinity.

  This list is confusing bit source because there is no guide to how to use

  All Configurations of VSISH - built on Mon 23 August 21:53:13 PDT 2010

  But a few google took me here:

  / > cd/hardware/cpu.

  Hardware/cpu/> cat/hardware/cpu/cpuInfo

  {Global information CPU

  Hyperthreading State: Hyperthreading State: 3-> active

  State of State: HV HV: 3-> active HV

  Number of packages: 2

  Number of cores: 8

  Number of CPUs (son): 16

  Number of cores: 8 available under license

  SLC64 of measure: 0

  HV capable Replay: 1

  First reason why playback is disabled on the host: why replay is disabled on the host: 0-> HV Replay is supported

  Several reasons why replay is disabled on replay host: reason is disabled on the host: 0-> HV Replay is supported

  ---

  Hardware/cpu/> cd/hardware/cpu/cpuList

  / hardware/cpu/cpuList / > ls

  0

  1

  2

  3

  4

  5

  6

  7

  8

  9

  10

  11

  12

  13

  14

  15

  so:

  * How do I know what CPU logic belong to what CPU and will be one of the useful information for NUMA or configuration of the processor affinity?

  the question is to know how to identify the logical processors belongs to the same socket for example and get his number to be configured for the processor affinity.

  You don't need to do this vsish, esxcli already provides this info.

  The ID value of package tells you what physical socket the respective logical CPU belongs to:

  # esxcli hardware cpu overall get

  Packages of CPU: 2

  CPU cores: 16

  CPU Threads: 32

  Hyperthreading Active: true

  Hyperthreading supported: true

  Hyperthreading Enabled: true

  HV Support: 3

  HV Capable Replay: true

  HV Replay off the reasons:

  list of UC # esxcli material

  CPU:0

  ID: 0

  Identifier of the package: 0

  Family: 6

  Model: 45

  Type: 0

  Step by step: 7

  Brand: GenuineIntel

  Base speed: 1995191853

  Bus speed: 99759598

  APIC ID: 0X0

  Node: 0

  L2 Cache size: 262144

  L2 Cache associativity: 8

  L2 Cache line size: 64

  L2 number of CPU for the Cache: 2

  L3 Cache size: 20971520

  L3 Cache associativity: 20

  L3 Cache line size: 64

  L3 Cache CPU Count: 2

  [...]

• Supports multi-vCPU in ESXi 5.1 feet

  
  I want to quickly check with you is FT supports more than one vCPU in ESXi 5.1

  No, it does not support.

  FT FAQ: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1013428

• New to VMware - I could use some requirements of ram help waking up.

  Hello

  We are new on the construction and using VMware, even if we had a couple of host servers running ESx4i for a few years.  A previous team set up servers and we have a great thing since.

  I'm trying to build 3 new virtual on a single host machine.  I have a question about the requirements of the ram for the virtual servers.

  The physical host computer is a Dell 2950 with 64g of ram.

  I need to build three virtual servers that were spec'ed as required the following physical requirements.

  Machine SQL: 32g

  Machine App: 64g

  test machine: 32g

  With the physical ram of these requirements is to say my host will require 128g of ram to meet these requirements?

  Thank you and sorry for the lack of knowledge,

  James

  It is quite easy to give less memory and then change it later.   I would consider even for virtual processors.  If you are prompted for 4 or 8 by VM, start with less.  It is not necessarily bad to have multi - vCPU VMs, but it is best to start with vCPUs less if you can.

• Emergency situation!  Modified processors, VMs does not start

  Help!  I just changed a 5570 to a 5670 processors.  The VMs rand fine for awhile, but then frozen.  Now I can not feed their place.  The two processors are the same except for the number of cores.

  you've restarted the management on the ESXi host agents where this comment is registered?  In addition, you tried to remove the comments from the stock and then browsing the data store and do a right-click on the vmx and "add to the inventory?

  also, take a look at the article

  http://KB.VMware.com/kb/1022046

• 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

• 4 processors operating at more than 95%

  We have a virtual machine running 2008 Server as a Terminal Server.  Everything works fine, but with the increase in the number of happy users, the server is running at almost 100% for the use of the processor.  There 24gig of RAM so it's not a problem.  What is the best config for processors so that we don't get alarm e-mails whenever it exceeds 95%.  And is there any way of adding additional processors - in my opinion, there is a limit of 4 CPU on ESX.

  ESX requires the number of phyiscal CPU or the available by vCPU cycle instruction processor cores.  Therefore, if you have a dual Quad core server you would have eight logical vCPUs available to customers of the service.  Now you install eight guests on this server (at the end so I will ignore the user of Service of CPU0 consoles)

  If they 1vCPU each there is not claim and all the comments you will receive a full kernel. Now if these comments have 2 vCPU in their servers then you 2-1 using and with 4 vCPU per server, looking to claim 4-1, now on single vCPU customers would not a problem, but with guests from multi-vCPU vmware Scheduler will try to find free CPU physical, s in groups equals the number of vCPUS in the guest subsequently 32 comments of single vCPU running on the server above works better than 8 people of vCPU Quad. as it is much easier to find one free heart four hearts.  witness the guests by high context switching and ESXTOP by a meter high % CPUREADY.

  I hope this clears it a bit for you.

  If you have found this device or any other answer useful please consider useful or correct buttons using attribute points

  Tom Howarth

  VMware communities user moderator

  Blog: www.planetvm.net

• Should the System Idle process percentage turn all the time in the order of 90%?

  The System Idle process percentage seems to run constantly in the order of 90% in the task Mgr it can not ends the process either, I read what is normal, or there are problems with registry, or has something to do with Norton Anti Virus so what is the right answer here?

  It's normal. It's just a percentage of time processor. If it was really low, it means that your processor is overworked all the time and would not be a good thing.

• slow performance with CentOS 5.5 reviews and multiple vCPUs

  We installed a server in CentOS 5.5 postgresql database comments in vSphere 4.

  This prompt 'verik' (2 vCpu, 16 GB RAM, core EAP) is the only host running on the vSphere host (2 x 6 core AMD Opteron 2439SE, 128 GB of RAM).

  We are witnessing very low yield (for example, when executing a pg_dumpall). The CSTP % seems rather high, especially compared to % RUN - and surprising since there is no claim to the resources of the host.

  09:38:02 to 17:54, 131 worlds; CPU load average: 0.01, 0.02, 0.01

  PCPU USED (%): 11.2 0.6 0.4 0.3 0.2 0.3 0.4 2.1 0.3 0.3 0.1 2.9 AVG: 1.6

  PCPU UTIL (%): 11.4 1.1 0.9 0.9 0.8 0.6 0.9 2.5 0.6 0.7 0.2 3.1 AVG: 2.0

  PSC (%): 7 US, 2, 91 sy id wa 0.       CS/sec: 509

  ID NAME NWLD % USED GID % PERFORMANCE SYS % WAITING RDY % IDLE % OVRLP % CSTP % MLMTD %

  1 1 12 1181.67 slow 1184,71 0.00 0.00 15,87 2.47 0.00 0.00 0.00

  2 2 System 7 0.01 0.01 0.00 700.00 0.00 0.00 0.00 0.00 0.00

  6 6 75 helper 0.16 0.16 0.00 7500,00 0.05 0.00 0.00 0.00 0.00

  7 7 drivers 9 0.01 0.01 0.00 900.00 0.00 0.00 0.00 0.00 0.00

  8 8 vmotion 4 0.00 0.00 0.00 400.00 0.00 0.00 0.00 0.00 0.00

  10 10 console 2 10,59 10.83 0.02 0.00 189,27 89,19 0.35 0.00 0.00

  15 vmkapimod 15 7 0.03 0.03 0.00 700.00 0.00 0.00 0.00 0.00 0.00

  17 17 FT 1 0.00 0.00 0.00 100.00 0.00 0.00 0.00 0.00 0.00

  18 18 8 vobd.4261 0.00 0.00 0.00 800,00 0.00 0.00 0.00 0.00 0.00

  19 19 net - cdp.4269 1 0.00 0.00 0.00 100.00 0.00 0.05 0.00 0.00 0.00

  20 20 vmware-vmkauthd 1 0.00 0.00 0.00 100.00 0.00 0.00 0.00 0.00 0.00

  26 26 verik 4 5.12 4.75 0.35 348,10 0.05 18.24 0.51 47.30 0.00

  We tried a variety of 2.6.18 kernels EAP (including attempts with the CONFIG_HZ 100 and with a divider = 10 options). More or less consistently poor performance.

  The BIOS of the host settings are:

  HyperTransport technology: HT 3

  Assist HT: enabled

  Virtualization technology: enabled

  DRAM prefetcher: enabled

  Training Software Prefetch Prefetch material: enabled

  Hardware prefetcher: enabled

  Demand-based power management: disabled

  We have also tried to run this comments with 1 vCPU (2.6.18 - 194.8.1.el5PAE):

  The first run after a reboot:

  time pg_dumpall >/dev/null

  Real 8m1.764s

  user 0m12.649s

  sys 0m3.133s

  While it works, the system fails (for example, a 'top' which should be updated every second can be updated every 7 seconds). The guest spends a lot of time in the 'system', do what we do not know.

  CPU: 17.3%us, 81.9%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.8%si, 0.0%st

  It takes 7 minutes on a server physics multi-core (4x2.8Ghz Xeon).

  It takes 17 minutes at best (more time) on "verik" with 2 vCPUs.

  We would really like to migrate our physical postgres server in VMware, but we cannot justify it doing so unless he can perform at least as well as on physical hardware. (We tried to store the database on the local disk and mounting NFS host datastore; similar performance in all cases. We also checked adequate bandwidth on our links for storage and front networks.)

  We reviewed several postings on execution of the guests with more than 1 vCpu and think we understand how vSphere CPU coscheduling works. But in our scenario, without conflict of use of CPU resources, we do not know why we're having performance issues.

  Any suggestions?

  Thank you!

  Craig

  First, why OS 32-bit VMS with 16 GB of RAM?

  My first and very strong suggestion is to go for the 64-bit version of CentOS, EAP is known to have poor performance. Run us multiple virtual CentOS 64-bit machines, and I can't say that we have unexplained performance issues.

  You might try to twist a little bit the 32 bit existing OS, but I don't expect a big improvement. Keep this divider = 10 in your kernel parameters, but if you like to try again with simple CPU add 'nosmp noapic nolapic' kernel parameters, those can drop the percentage of time processor rdy one quite a bit, at least I saw that happen on busy ESX host. Also assign some pages of huge memory in the Linux kernel and configure PostgreSQL to use.

  Your BIOS settings also appear to be inefficient, the General recommendation is to disable the CPU features on the ESX host preloading since when the CPU executes several processes (VMs) preload results in a high number of failures which is just waste of cycles CPU.

  Equipment training on Software Prefetch Prefetch: disabled

  Hardware Prefetcher: disabled

  But still, go for 64-bit operating system.

• Several CPU VM - Clarification needed

  I have a few questions that I need stated on several CPU VM. So here it goes... one of our existing ESX servers, we have 8 logical processors (2 x quad core). All our virtual machines are uniprocessor VMS however a running SQL server and is now run out of resources because there have been some changes. Here are my questions:

  1. since it is a single CPU VM, does this mean that he can never use more than one of the logical processors (although there may be a large amount of free resources available on the ESX host)?

  2 is it bad to add a second processor to a virtual computer and why? I noticed it says in a configuration that it could cause the VM to become unstable.

  I would like to hear answers to the foregoing the benefits and disadvantages... personal experiences...

  Thanks in advance!

  (1) it is correct - a single vCPU can only work on one logical processor at the same time - a dual vCPU runs on two logical processors.

  (2) it is not bad to add a second vCPU if this is doen for the right reasons and it looks like you need a second vcpu - the reason why the recommendation for a single vcpu must with planning the vcpu - the vmkernel plan vcpus all a VM multi-vcpu simultaneously so if he can't schedule vcpus all the non-volonte get on demand - think of it this way it's easier to schedule 1 vCPU 2 or 4 - and if you have enough resources, you should be okay to add a second vcpu to your server SQL - the other thing to do if you add a second vcpu are of course the HAL is configured to support multiple processors.

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

• How to calculate the CPU Ready on Cluster DRS via Powercli?

  Hi all!

  I have a DRS Vsphere cluster. I want to know what is the value of the loan of CPU I have in my group.

  For example, I get 20% of powercli value, it is normal for the cluster, but if I have 100% or more, I have a problem.

  How to achieve via Powercli? And how to calculate the percentage values correctly?

  I know, I can get all values of CPU Ready of VMs cluster, but IT is not the same thing, I need overall value of CPU Ready.

  Thanks in advance!

  As far as I know you can get the cpu.ready.summation for ESXi nodes or VMs.

  For a cluster, you will need to get the value of each node in the cluster ESXi and then take the average.

  The metric cpu.radey.summation is expressed in milliseconds.

  To get a percentage, you need to calculate the percentage of loan period during the interval during which it was measured.

  Something like this (this will give the loan current %)

  $clusterName = "mycluster.

  $stat = "cpu.ready.summation".

  $esx = get-Cluster-name $clusterName | Get-VMHost

  $stats = get-Stat-entity $esx - Stat $stat - Realtime - MaxSamples 1 - forum «»

  $readyAvg = $stats | Measure-object-property - average value. Select - ExpandProperty average

  $readyPerc = $readyAvg / ($stats [0].) IntervalSecs * 1000)

  Write-Output "Cluster $($clusterName) - CPU % loan $(' {0:p}'-f $readyPerc).

• Licenses to create a virtual machine is second with more than 8 cores?

  So, we have a machine with 4 physical Sockets with 16 cores on each. We bought 4 licenses of vmware's standard. Now, we saw early on that the number max of hearts that we assign to a virtual machine was 32, which isn't really a big problem, 32 is a lot for our needs. So we have a 32 core virtual machine running and some other smaller, but now when I try to create another virtual machine with more than 8 cores it tells me that I have insufficient licenses.

  Can anyone provide more information on that? If I can create a virtual machine with more than 8 cores, why I can't create a new one?

  He said authorized to 4 physical processors, so it's ok, it's using your Standard licenses.

  During the 60-day trial, you could create more large virtual machines, because the 60 days run with Enterprise Plus features. Now that you are using the standard license, you can create only 8 vCPU VMs.

  Solution:

  You should spend 5.5 ESXi. Your license will also work for 5.5 and you'll be able to create virtual machines with up to 64 vCPUs.

  Concerning