Hyper threading ESXi, Dell T605 and AMD Opteron processors

Similar Questions

• Intel and AMD CPU processor in the same Cluster vCenter

  Okay, guys and girls, doing vCenter/ESX 4.x cluster support a joint brain of AMD and Intel CPU?

  I have succeeded in their own groups so many individual servers but never asked on the mixture of AMD and Intel servers in a Cluster of ESX.

  I'm sure that's not possible or supported, but I have to ask anyway. Send a link to support your statement.

  Thank you

  N °
  A VCA active cluster only allows processors to a single supplier in the
  cluster. VirtualCenter and vCenter Server you do not add a host
  another provider in a cluster enabled EVC.

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalID=1005764#AMD-Intel

  If you have found this information useful, please consider awarding points to 'Correct' or 'Useful'*.

• Better NUMA or Hyper Threading is for overall performance?

  Let's say I have a 5.1 ESXi host that has 2 quad-core processors with Hyper Threading, for a total of 16 logical processors. If I have a very greedy CPU VM that I want to give 8 vCPUs, it would be preferable to extend on the NUMA nodes, or apply the configuration numa.vcpu.preferHT = TRUE to force the VM to stay on a single NUMA node and use the Hyper Threading instead?

  I am interested in both to get the best performance for this virtual machine while ensuring that the other (much less CPU intensive) virtual machines running on this host didn't get hungry CPU or block this virtual machine to access the CPU.

  You must understand that this 'Core Hyperthreaded' is not true core. It can do only certain things. It is difficult to assess this performance, but I would say in common, you can not get tasks more than ~ 20% of the performance of ht-core (relative to the true core). Sometimes more, othertimes not.

  So if you run CPU tasks (such as video encoding), it is best to let your virtual machine (with 8 vCPU) to use the two pCPUs (4 real cores of each of them), even if you lose a few cycles of CPU per NUMA.

• A clustrer function of Intel and AMD mixed server ESXi does

  I have a HP DL380p G8 which has 2 intel xeon CPUs (8 cores) and another HP DL385 G7 server with 1 CPU AMD Opteron 6134 (8 cores). Not now take place ESXi. We plan virtualization. Based on the VMware compatibility guide, two of these servers are ESXi 5.x supported. Although he said that the DL385 G7 needs 2 CPUs. Is this correct?

  We do not have a lot of servers and according to virtualize, three ESXi servers be enough. Can I get an another DL380p of the G8 and have a cluster of two servers Intel ESXi based and a base of AMD server or all three servers should I run the same processor/vendor?

  Thank you.

  A.

  Cluster of features such as vMotion (live migration) require processors from the same provider, supporting a common mode of EVC.

  Where did you read that the AMD need hosts two processors? Currently I'm not aware of such a requirement.

  André

• VMware esxi 4.1.0 Build U1 on HP Proliant DL 165 G7 348481 (590258-421) processor AMD Opteron 6128HE

  Hi all! I am new to vmware. I install VMware esxi 4.1.0 U1 Build 348481 on HP Proliant DL 165 of the G7 with an AMD Opteron 6128HE processor. Start after the installation of the server has been reset, vmware esxi, but after 5 minutes of work goes in the purple screen and work stoppages. If anyone has encountered this situation and can help me?

  No chance!

  Please note that the DL165 G7 is currently not supported by HP for VMware ESXi (only for ESX classic).

  See their Server ProLiant VMware Support Matrix and note (1) here for DL165 G7.

  You will find the same information in VMware HCL.

  Andreas

  - Blog of experience front of VMware

• Pregunta sober vCPU is hyper-threading en esxi 4.0 (free)

  Hola a todos,

  recently he wont UN servidor ESXi 4.0 in a servidor hp than tiene UN unico procesador quadcore of the 5000 series.

  It has activated el tema of hyper-threading y cual're mi sopresa hora to see possible asignar a las maquinas office hasta 8 vCPU (4 x 2).

  Exactly works como este tema?

  ES posible por ejenplo asignar a 5 virtual una Máquina vCPU? (4 cores + hyper-threading 1?)

  No verlo claro termino.

  MUCHAS gracias.

  Kind regards

  Pablo

  If upon mi respuesta ayuda, por favor puntuarla considered como correcta o util. MUCHAS gracias!

  If you found this information useful, please consider awarding points for answers 'OK' or 'Useful'. Thank you!!

  Hola Borja,

  If no harm recuerdo con vSphere ESX/ESXi puedes asignar UN number of vCPUS a tus VMs el cual sea impar,'re decir, 3, 5, y 7, entendiendo 8 vCPUS are el maximo.

  Hyperthering perminte (desastivado in the BIOS por defecto) hacer una fisica una logica CPU. VMware recommend activar hyperthearing.

  Saludos,

  Jose Maria Gonzalez,

  Founder and president of JmGVirtualConsulting.com

  -

• How to access the BIOS and disable hype-threading on xp

  How to access the BIOS and disable hype-threading on xp

  THX

  During the initial boot, you should see a brief message posted to press a specific key (usually the delete key) to access the BIOS. If there is an option to disable Hyper-Threading, you will need to find it.  You can also see if there is a guide for your motherboard and the BIOS options.

  Any reason, you need to disable?

  J W Stuart: http://www.pagestart.com

• Reference Dell M620 and M820 ESXi 5.1 installation

  I'm relatively new to VMware on Dell hardware. The closest thing that I believe to a custom image is 'VMware ESXi 5.1 update 1 Image Recovery"(http://www.dell.com/support/drivers/us/en/19/driverdetails?driverid=RD5JN). I assumed it to be ESXi 5.1 update 1 with favorite Dell specifc driver packages. I had planned to use this new installs feeling that it would include the latest drivers for my Dell M620 and M820s and would be preferable to base VMware image.

  1. It is the support for the installation of these blades?
  2. The description says « Ce ISO image should only be used to restore/reinstall VMware ESXi on image for SD Card/USB Key on the supported Dell platforms. »
     • I am confused by the specification 'only' restore/reinstall and not install.
     • Also confused by the mention of the only card SD and USB to the apparent exclusion of standard hard drives.

  I installed with it as a test and it looks good, but I'm uncomfortable with the description. I would be grateful for any additional information or insight to those who support ESXi in Dell stores.

  Hi vmproteau,

  Here are my answers to your question based on my experience. I have no experience with the M620 or M820 I manages around 240 M610, 60 R710, the R720 10, so I am familiar with Dells ESXi 5.1 servers update 1.

  (1) Yes, I would recommend using the ISO provided Dell printer if you are not familiar with creating your own package with the necessary drivers and firmware.

  (2) this ISO standard will include all drivers for supported Dell servers and some customizations of Dell and can be used for new installations regardless of the storage (SD, USB or HD Local) option. I would like to look out for is mainly to make sure that you update the firmware on all of your blades with the most recent available by Dell that ESXi is very picky with the pilot and also incompatible firmware Dell CMC with thanks to a few mistakes from time to time.

  Kind regards

  CROD

• CPUID for VCA AMD Opteron 3-Hyper-V

  I tried several variations of the different masks, but you have not yet a little luck. Does anyone have an AMD Opteron 3 cluster with a box of Hyper-V nested? If Yes, what is the cpuid bits you use?

  Previously, you had:

  CPUID.80000001.EAX.AMD = HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
  CPUID.80000001.EBX.AMD = HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
  CPUID.80000001.EDX.AMD = HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH

  Now, you have:

  CPUID.0.EAX.AMD = HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
  CPUID.0.EBX.AMD = HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
  CPUID.0.EDX.AMD = HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH

  These should be:

  CPUID.8000000a.EAX.AMD = HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
  CPUID.8000000a.EBX.AMD = HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
  CPUID.8000000a.EDX.AMD = HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH

• Hyper-threading and vCPUs

  A few years ago I was working with VMware Server 1.0 on Windows 2003. I had 2 servers with VMware Server, one of them has a CPU Intel Hyper-thread, and the other has the same Intel processor but with HT disabled.

  I had a VM running a 16-bit application, which took all the cycles available CPU. When this run on non-HT Server virtual computer, the Windows host reports 100% CPU usage. When the virtual machine running on the active HT server, host the CPU utilization was 50%, and the Task Manager showed the virtual machine, taking all the cycles of a demi-processeur and the other half processor almost in slow motion.

  Assuming that the processors are equal, I think I know that the virtual machine has got more CPU power running on non-HT server to run on HT-enabled server (because HT divided by 2 CPU and just one half CPU is assigned to the virtual machine).

  My question is: what happens with HT on ESX?

  When I assign a vCPU virtual machine, it will use just half a nucleus in a Hyper-Threaded Server, but a full kernel on a server of HT-people with reduced mobility? (assuming that no other virtual machines compete for resources).

  Thank you and best regards.

  With the following reflections on 2 and 3.

  (2) but do not forget hypervisor (vmkernel) provides these vcpus to the LCPU he will ensure that the vCPU is scheduled to LCPU who has cycles CPU available - if you are in the situation where all LCPUs are heavily loaded, then you need to increase the resource capacity by adding additional hosts to the cluster (if you ave a)

  (3) the virtual machine has no direct access to the LCPU but she is planned there by the vmkernel - if the virtual machine is idle, it can theoretically be used no. (or at least very few CPU cycles)

  hope this helps-

• Oracle VM and Hyper-Threading

  Hello

  I was wondering if someone could comment on Oracle VM with vSMP and underlying hyper-threading with Intel 55xx series processors?

  If I remember correctly, Oracle used at least suggest HT has not been activated, but it applies to both virtual machines?

  Thank you!

  Does not relate to VM recommendation here. For Nehalem, I would recommend to enable as HT has been greatly improved.

  Duncan

  VMware communities user moderator | VCP | VCDX

  -

• How can I enable hyper-threading?

  I have a phenom 2 x 6 1100 T UC. PC Wizard says that hyper-threading is turned off. How can I activate it and what benefits it will give me? Any advice would be appreciated.

  As afr as I know this processor (AMD) doesn't support hyperthreading.

  It has six distinct cores if.

  Hyperthreading for Intel processors operates as if it were two processors by heart.

• More physical cores vs less with hyper-threading

  I'm sure that this has been answered before, but is it better to have more physical cores, or I can get the same performance with half of the carrots but enable hyper-threading technology?  It is of course a discussion of type AMD vs Intel...

  Thank you!

  Hi friend

  Visualize this:

  You are in a supermarket and a bonehead out a checkbook to write a check.

  You have a gallon of milk and a $5 ticket in your hand.

  The Fund puts the first transaction on hold while the old lady wrote the check and treat your transaction. You go out, it ends by the check writer.

  That's the theory behind the HT. If a thread stops, it can perform a second thread on the same kernel. But the problem is that it can only manage a thread on any cycle, so it depends on inefficiencies in executing 'slide in this teaching of the second.'

  Now, imagine that the grocery store stops take control. Efficiency is increased, the main thread has more effective, but it is less likely for this second operation to occur. If you wait longer with your milk.

  Would you rather have a cashier multitasking or more open channels? If the company is light in the store and transactions are small, the cashier multitasking could be allowed.

  But if it's Saturday afternoon, you want only to open more lanes due to heavy traffic.

  HT works well in loads of light work where the traffic is "burst" and ineffective. But if the workloads increases (and I believe that we all have more work to do on our systems than ever) so the benefits of HT begin to slip and the benefits of dedicated hearts really shines.

  Reference: really liked above the explanation I got from this thread: 4 Cores with Hyperthreading vs 8 physical cores? UC - Performance -

• Satellite R630 - how to disable hyper-threading technology

  Hi all

  I can't find the option in the bios to disable hyper-threading.
  There is an option "disable carrots", which translates as windows only showing 1 core in the Task Manager.
  But this isn't what I want.

  I do some supercomputers and my experience tells me that allowing the use of thread cache on its own gives me the best performance that have multiple threads share the caches by SMT.

  I have the newest BIOS (BIOS 1.60, THIS 1.40). Why Toshiba would prevent such an option.
  It is available in the R700 models?

  Cheers, Jim

  Hello

  What to say;
  It seems that the BIOS does not support this option and therefore you would not be able to disable the s CPU hyper-threading and I doubt you'd be able to disable this somewhere else.

  In my opinion, there is nothing to see

• Satellite A500 - is there a way to disable Hyper-Threading technology (HTT) technology?

  Is there a way to disable Hyper-Threading technology (HTT) technology?
  It's really bothering me with some applications...
  I can't find it in the bios... 1.5... He was in the bios earlier?... Is there a way to roll back...

  It is even possible...

  Post edited by: rekof

  Hello

  Hyper-Threading technology is supported by CPU and it of not possible to disable it, if this option is not available in the BIOS.

  See this Intel Info page:
  http://www.Intel.com/support/processors/Pentium4/sb/CS-017371.htm

  Welcome them