Hyper-threading and vCPUs

Similar Questions

• 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

• 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

• 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

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• 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.

• 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

  -

• 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

• How to disable the hyper-thread on U840 Satellite Ultrabook?

  I would like to know how to turn off hyper-thread on Ultrabook U840

  Does anyone have any suggestions?

  Thanks in advance for your suggestions :>

  Model Toshiba U840
  Processor number: i5-3317U
  http://Ark.Intel.com/products/65707

  Something like that is controlled by the BIOS and if that option exists, you might find in the BIOS settings.
  However, if its not available in the BIOS, you would be able to disable s Intel Hyper - Threading Technology

• On the hyper-threading technology

  Hello. I rather heard a lot of the inefficiency of the Hyper-Threadyng, especially that it is a useless load of each carrot with two operations. Efficiency can be no more than 30% and not always. Should I turn off this function or not? If I have to, I need to know how. After all, there are not these settings in the BIOS of my laptop (HP Envy 15 j-001er).

  P.S. This thread has been moved to storage > General for laptops - pavilions, Presario. -Forum moderator hp

  > There is not these settings in the BIOS of my laptop

  Then you can not turn it off.

  But don't you worry.

  If the performance with Hyper-Threading disabled technology is 100%, then with Hyper-Threading active technology, the heart of processor can achieve a level of performance which is between 100 and 130%, depending on the characteristics of the workload.

  In the first generations of Intel processor with Hyper-Threading functionality, some workloads could cause a Hyper-Threading performance drops to<100%, however="" that="" was="" fixed="" in="" the="" prescott="" architecture.="" the="" prescott="" architecture="" was="" released="" in="" 2004="" -="" that="" is,="" 10="" years="" ago.="" modern="" intel="" processors="" with="" hyper-threading="" enabled="" should="" always="" perform="" at="" least="" as="" well="" as="" with="" hyper-threading="">

• I7 Intel hyper-threading processor (only every second core is used)

  Dear users,

  the "CPU Information.vi" gives me the following result (see "CPU Information.png"). When I run a Labview vi, only four cores are used (see "CPU usage.png"). I believe that my processor has 4 physical cores and hyper-threading functionality: http://ark.intel.com/products/48500/Intel-Core-i7-880-Processor-8M-Cache-3_06-GHz

  Do you have an idea how use also other virtual hearts as well, please?

  Kind regards

  M

  
  

• Ask.Hyper Threading Hp mini 210-2037 you?...

  Hello, I just bought my mini 210-2037 Tu, evrything just beautiful, then all of a sudden Im wondering this netbook can't do hyper threading mode, even if the processor, takes in charge only mode

  I ask for help, its possible for my mini got hyper threading mode? and how to get there?... if its

  Thanks a lot before hand...

  Well even if I don't have the answer to my problems, but still this forum very useful to ask and understand our problem, I m really grateful because the forum.

  recently I can solve my problem on hyper threading fitur on my mini

  with/without a doubt I'm going to share some of my tips here

  (refer to my son, ' Activate Hyper Threading fitur on HP mini 210-xxxx proc n550 ")

• 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.

• Hyper-Threading

  My CPU does support HT?

  Intel Pentium 4 CPU 3,20e GHz

  I heard that this E means CPU support hyper-threading.

  You are welcome.

  That I don't know, if a piece of a processor (thread) might not work, but overall the processor itself.

  I guess anything's possible, but I recommend you check that I mentioned first before drawing conclusions.

  I see another post of yours that you have a d530. That the PC supports hyperthreading, but if you have installed a processor Prescott, sometimes they do not work in the d530.  Sometimes you get same microcode errors when you start it.

  My recommendation is to get a Pentium 4 Northwood 3.20/800/512KB (sSpec SL6WG) processor and I pretty much guarantee that your PC will work fine.

  They are plentiful and cheap on eBay.

  http://www.eBay.com/Sch/i.html?_stpos=63108&_sop=15&_fcid=1&GBR=1&_localstpos=63108&_sacat=0&_nkw=SL6WG&_clu=2&RT=NC&LH_BIN=1

  I've updated four d530 CMT with this processor and each of them worked very well.

  Paul

• Hyper-V and other

  Bought ASUS CM6870 with window 8. I added the 8 PRO window. I don't have a Local account with administrator right.

  I activated the winter V. I activated the virtualization in the UEFI bios. I tried running COREINFO - v but I don't get an administrator.
  When I open Hyper-V Manager, I don't get the option to add the new virtual machine or a virtual switch. Iread that someone had the problem of Admin and found that it WAS ACTIVATING ADD a PROBLEM.
  I WOULD LIKE to USE HYPER - V AND INSTALL A TON OF DIFFERENT from i AM OS has CURIOUS SUMMER.

  Thank you

  JP

  Hi JP

  I recommend that ask you this question on our forums of virtualization. This forum is where Hyper-v experts answer questions.

  Virtualization of Windows 8 Forum:

  http://social.technet.Microsoft.com/forums/en-us/w8itprovirt/threads

  Concerning

• 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 -