Oracle support Intel Hyper Threading??

Does anyone know if the Oracle 9i and 10g database supports Intel's new Hyper Threading technology???

Cody,
Please read Oracle's Note:205089.1 on metalink.

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Intel Hyper-Threading Technology conflicts with LabVIEW utilities (VISA, Scope GUI, IO Trace...)

I would like to share a pretty hard-to-troubleshoot issue we are experiencing for the last few months.
Our company used to get DELL T5500 for our engineers. The PCs work just fine with all LabVIEW utilities. But DELL has discontinued T5500 series and replace them with T5600. I got one of them few months ago and after installing LabVIEW, I tried to run VISA console via MAX. It immediately crashes MAX and destroy MAX database. After that I try to run other utilities like NI IO Trace, VISA Interactive Control, Scope Soft Front Panel, ... All of then crashed. I am running 64-bit Windows 7 + 64-bit LabVIEW. And we know that most of NI Utilities are 32-bit.
After a lot of frustration I went down to researching the computer BIOS level. And try to side-by-side compare with T5500. T5600 has much newer CPU and has lot more performance enhancement features. I tried to turn of/on one by one to see if any affect LabVIEW utilities. To my surprise I found that Intel® Hyper-Threading Technology (Intel® HT Technology) is the sinner. After turning it off all LabVIEW utilities start to work just fine. All T5600s are shipped with this feature enabled by default.
We know that DELL Precision PCs are almost industry standard for all engineering department. I think in the next few years a lot of people will be hit by this issue. I already notified NI and DELL R&D so they can find a good solution. But I just would like to make this issue Google-searchable so that anybody see this issue may get some help.
Give me any feedback if you encountered the same problem.
Thanks,

This means that you were on a witch hunt and hyperthreading is not the problem. (I always had doubts).
The original thread was about crashes in the visa console, but your problems seem to be much more generic:
"- The application stalls unpredictably after some time, sometimes a minute, sometimes hours. After clicking into the GUI it starts working again. This repeats in an unpredictable way. Competitive activities on the computer seemed to increase the stalling-frequency.
- Sound Input VI stops unpredictably and has to be restarted."
Are you sure you don't have a general code issues such as race conditions or deadlocks. Maybe you should start a new thread and show us a simplified version of your program that still demonstrates the problem. If there are race conditions, moving to a different CPU can cause slight changes in execution order, exposing them.
Did you repair the LabVIEW and driver installation? What are the power settings of the computer? Did you update other drivers (such as video, power management, etc)
What is the exact CPU you are using? What third party utilities and security software is running on your PC?
LabVIEW Champion . Do more with less code and in less time .

Disable Intel CPU Hyper threading in Oracle RAC environment

Dear Expert,
Does disable CPU hyper threading will have direct impact or maybe unexpected behavior to Oracle RAC database?
Actually the background of this question is we have many received packet queuing on the network layer waiting to be processed. Investigation leads to the processor utilization which shows that many processor are still in idle state or not used when the other processors are busy processing incoming request.
I have visited some oracle note like
CPU Count Consideration for Oracle Parameter Setting When Using Hyper-Threading Technology (Doc ID 289870.1)
Oracle and Hyper-Threading (Doc ID 205089.1)
Using PROCESSOR_GROUP_NAME to bind a database instance to CPUs or NUMA nodes (Doc ID 1585184.1)
These document already give useful information but i wonder if there is any possibilities risk or another consideration of disabling cpu hyper threading.
Please let me know if any other information required.
Thanks.
Best Regards,
Jolly

As far as I know it is set as cpu architecture and mobile chips don't have the option. Not 100% as I've never needed to do it.
Better bet would be to check Intel ark and forums with them I expect.

Oracle Linux 6.2 - hyper-threading

Hello
two simple questions, I hope 8^)
if I installed OL 6.2 and then also upgraded to UEK R2, on X64 Intel server - both tasks done with hyper-threading enabled and then I want to disable hyper-threading after OS installation - do I need to make any OS system/parameter changes at Linux OS level or simply turn off H/T at hardware level and reboot the server ?
is there general recommendation re when H/T is beneficial on Oracle Linux with UEK ?
what about if I added more RAM to the same 64-bit Intel server? Any Linux OS changes required to get all RAM recognised by OS ?
thanks!

A recommendation does not mean the absolute best solution for every situation. There has been no information about any particular software deployment or even the particular CPU in question.
I agree with you that enabling or disabling HTT in regard to achieving the best possible performance for a particular scenario is subject to testing. But, if someone asks me what is the recommendation about HTT in regard to Oracle UEK kernel, and possibly Oracle RDBMS, my suggestion is to use the default and leave HTT enabled. I'm not aware of any documentation that suggest to generally disable HTT when using Oracle. Saying "it depends" is scientifically correct, but not helpful.
There are already plenty of discussions about HTT on the net. You can turn HTT off and experience a performance increase, but there is also a chance the performance was even better with HTT enabled in a properly configured system or application. There are cases were HTT apparently slows down performance, but drawing a conclusion about enabling or disabling HTT in regard to performance is often too simple due to many other factors that can interfere with the results.
Dude the link you supplied referenced some old ibm information.Well, Hyper-Threading isn't a new feature.
For what it's worth, check out http://en.wikipedia.org/wiki/Hyper-threading in particular "Drawback history".
Or http://www.intel.com/support/processors/pentium4/sb/cs-017371.htm#1c which also links to more performance info.

Intel HT (Hyper-Threading) BIOS 1.9?

Sup People!
My Intel HT (Hyper-Threading) don't work right now, what to do?
I was told that I need the new BIOS 1.9 for HT to work?
I have: Intel P4c with HT
Intel 875P with HT
MS Windows XP Professional Version 2002 & SP 1
There is no option button in the BIOS 1.8 for HT!
What do I need to do? Please Help
TaZ ...
Also I have a new OVER CLOCK speed! MY 875P NEO @3420MHz/1140MHz FSB !!
It's a old thread so look at post #7
http://www.msi.com.tw/program/service/forum/index.php?sid=&postid=188033#post188033
TaZ

Sup & THX people for all the INFO!
Hay Schiers,
"I can switch it on and off like I want. The option to allow/disallow it is about
MP (advanced settings) and the version to support."
I have a Intel SL6Z3 Pentium 4c 2.4GHz 800MHz FSB with HT. This new chip come's with the NEW MO core stepping. (Costa Rica) Now Im trying to over clock this Vcore 1.70v CPU to 275MHz FSB (3.3GHz/1.1GHz FSB) 5:4 ratio, Ram 2.70v DDR440 - 220MHz @CL2.0-3-3-7-8 with my PC3500, AND WITH HT (HYPER-THREADING)
Right now my Vcore 1.60v CPU and 225MHz FSB @(2.7GHz/900MHz FSB) 1:1 ratio Ram 2.70v DDR450 - 225MHz @CL2.5-3-3-7-8 and NO HT (Hyper-Threading) On Intel STOCK Air.
I have also tryed Vcore 1.6 CPU and 260MHz FSB @(3.12GHz/1.04GHz FSB) 5:4 ratio, RAM 2.60v DDR416 - 208MHz @CL2.0-3-3-6-8 and NO HT (Hyper-Threading) On Intel STOCK Air.
http://www.msi.com.tw/program/service/forum/index.php?threadid=32697&sid=
PLEASE HELP ME! GET HT (Hyper-Threading) WORKING!
Please show how to do it step by step please
I have BIOS 1.8 (Bugy) Need Bios 1.9 for new microcode update to get HT properly recognized with an option!
OR IS THERE ANOTHER OPTION?
TaZ

Oracle 9i R2 and Hyper threading

Hi
This is a matter of confusion to me, I've tested Oracle 9.2.0.1.0 on several machines with Hyper threading 1 CPU Intel and Dual Xeon servers.
When installing oracle the CPU_COUNT and PARALLEL_THREAD_PER_CPU parameters are set automatically.
ie: Intel 3.0 HT
CPU_COUNT = 2
PARALLEL_THREAD_PER_CPU = 2
Dual Xeon 2.8 HT
CPU_COUNT = 2
PARALLEL_THREAD_PER_CPU = 4
with this default settings our application is dragging it's feet (developped on 4.5 upgraded to 6i client/server)
But if we set
CPU_COUNT = 1
PARALLEL_THREAD_PER_CPU = 2
for the Intel the app goes lightspeed
and
CPU_COUNT = 1
PARALLEL_THREAD_PER_CPU = 1
for the xeon again lightspeed
I didn't face this problem with non HyperThreasding CPUs
My question:
Why is this anomoly, what's the workaround without changing the CPU_COUT parameter?
did anybody else face any problem like this? does this happen in 10g???
Thanks in Advance
Tony S. Garabedian

Any suggestions? Any ideas??

Intel Xeon Hyper Threading

Hi there,
Any experienxes with $SUBJECT and Solaris 10?
How stable is hyper threading support, and how much does it degrade performance, if I switch it off?
I've read about the security vulnerability with hyper threading, but I don't really care about it. I'm more interested in performance/stability.
Thanks,
Imre Csatlos

CPU_COUNT is a parameter dinamically adusted by the Oracle instance. Oracle perfectly supports hyper threading and there is no need to change the value of this parameter.

SAP Oracle Support for VM and Hyper V

Dear Friends,
We are planning to do Up gradation and implementation for below application with Oracle Database.
SAP ECC 6.0 additional application server
SAP Portal Development system
SAP Portal Quality system
SAP BI Development system
SAP BI Quality system
Documentation Server /SAP CONTENT SERVER 6.30
SAP Solution Manager 7.1 EHP1 Development System
SAP Solution Manager 7.1 EHP1 Quality System
Which virtualization is suitable for us.? Hyper v or VM
VM does not support from orcle,Still some customers are using.Is it advisable to us VM?
Hyper V supports sap with orcle?
Or can we install all application on 1 single Operating System?
Thanks a lot in Advance
Regards,
Snehal Patel

Thanx Deepak,
As per Note 1329848
All Oracle products (incl. Oracle Database 11.2.x, Oracle RAC 11.2.x, Oracle Client 11.2.x) certified to run on Windows Server 2008 R2 with Service Pack 1 or Windows Server 2012 are also certified to run on these Operating Systems when running as virtual machines under Windows Server 2012 with Hyper-V, whether used in a private cloud or public cloud (including Windows Azure) environment, subject to the exceptions and additional information identified below.
List of Microsoft Windows Server 2012 Hyper-V guest OSes includes:
Windows Server 2012
Windows Server 2008 R2 Service Pack 1
Oracle Linux 6.4
As 1173954 - Support of Oracle for VMWare
Oracle has not certified any of its products on VMware virtualized environments. Oracle Support will assist customers running Oracle databases on VMware in the following manner: Oracle will only provide support for issues that either are known to occur on the native OS, or can be demonstrated not to be as a result of running on VMware.
Still Some Customers are using .Is it Advisable to use VM?
One more option proposed by partner:
All DEV/QAS servers for portal,BI,Solman on single server without any VM on Single is Advisable?
Regards,
Snehal Patel

Z77a-gd65 supports hyper-threading?

I have seen in some sites in Internet that the z77a-gd65 supports hyper-threading, but there is no mention of it in the MSI official site nor any BIOS option to enable and disable hyper-threading is described in the manual
Do you guys know whether multi-threading is supported or not?
Thank you very much in advance for your reply!

Thanks Froggy Gremlin for your reply.
There is no shot of this subsection. In page 2-10 there is a shot of the "OC Section" and in page 2-15 a reference to a read only CPU specification sub-menu, but no reference to the HT-setting at all. Maybe I am reading an outdated manual, but it is the one from the official MSI site at //download2.msi.com/files/downloads/mnu_exe/E7751v2.2.zip
But if you have the mainboard and you know there is this option, I trust your word. I am probably buying it but wanted to know before if this option was available.

Unable to detect Hyper Threading of CPU SL6WE 3.2 in MSI-865PE Neo2

Hi! I am new to this forum and need some help. I have just installed a Intel Pentium 4 3.2GHz Northwood SL6WE 478 800MHz/512k . I bought this on e-bay and understand that this cpu supports hyper threading. I have enabled hyper threading in the bios, but only see one cpu in Widows System Properties and only one cpu in Windows Task Manager. I had a 2.6 cpu installed previously, no hyper threading. My motherboard is an MSI-865PE Neo2 version 1.1, 2GB Ram ( 4x512 ?), Thermaltke TR2-430W power supply, Freezer 4 Arctic Cooler, Nvidia GeForce 6600, LG DVD RAM burner, 16x DVD ROM, WD 250 gig and an Hitachi 80 gig hard drive. I also used Arctic Silver 5 thermal paste (after using Arcticclean and Surface Purifier). Have I missed somethig? Would appreciate help in solving why I have no hyper threading.

200 7-3-3-2.5 Ultra Turbo and 212 5-3-3-2.5 Ultra Turbo is a
no boot. Thinks ultra-turbo tries to set mem timings to
2-2-2-5 below 218FSB and my memory can't do that.
Turbo boots ok. Normal setting disabled PAT.
200 2.5-3-3-7 Turbo PAT on 4.6GB/s
200 2.5-3-3-7 Normal PAT off 4.2GB/s
212 2.5-3-3-5 Turbo PAT on 4.8GB/s
212 2.5-3-3-5 Normal Pat off 4.5GB/s
Also tried 250 1:1, not prime95 stable
250 2.5-3-3-7 Ultra-turbo 6GB/s
I think pat is disabled above 218FSB on
1:1 and 5:4 setting, but not on 4:5 setting.
You should get close to or above 6GB/s at
1:1 250 3-3-3-5 bios overclocking.
Maybe something is running in the background
stealing cpu power or something?
Well, you have to test some more, maybe a
fresh windows setup will help?

Is LENOVO G50-70 442243 supports Intel Vertualization Technology

Hi All, I want to purchage LENOVO G50-70 442243. I want to run Virtual PC through Oracle Vertual Mechine or VMWare Player to run 64 bit OS (Linux CentOS) on Windows 7 64 bit host. Is this laptop supports Intel Vertulaization (is there option to enable VT-x in BIOS)? Is LENOVO G50-70 442243 supports Intel Vertualization Technology (to run Virtual PC - 64bit guest OS on 64 bit host OS) ? Thanks,Shankar

Yes I am sure. For example something that happens always is get stuck when I have oppened: Android Studio - programming platform - , itunes and google chrome. I thought that It is mistake of my laptop but as I read in other threads is a common and unsolvable till now problem.

Negative Impact of Hyper Threading and HFM

Hi,
It has come to my attention that on some Hyperion Apps, it is NOT recommended that Hyper Threading is used. Can anyone clarify this? I have searched Oracle and have found nothing concrete on this subject.
Thanks,
Sam

As previously stated, Hyperthreading is not recommended for Hyperion, as it does not provide any real performance value. Additionally, for Hyperion Financial Management, there have been documented support cases of problems with Hyperthreading causing problems with consolidations. Below is an excerpt from the HFM 9.3.1 readme
"HyperThreading is not recommended for application servers running on Windows 2000 Server; however, Advanced Windows 2000 Server and Windows 2003 Enterprise Edition are supported."
As a general rule when tuning/building a System 9 infrastructure, Hyperthreading should be turned off on all Hyperion servers.
Thanks!

Negative Impact of Hyper Threading and Planning

Hi,
It has come to my attention that on some Hyperion Apps, it is NOT recommended that Hyper Threading is used. Can anyone clarify this? I have searched Oracle and have found nothing concrete on this subject.
Thanks,
Sam

As previously stated, Hyperthreading is not recommended for Hyperion, as it does not provide any real performance value. Additionally, for Hyperion Financial Management, there have been documented support cases of problems with Hyperthreading causing problems with consolidations. Below is an excerpt from the HFM 9.3.1 readme
"HyperThreading is not recommended for application servers running on Windows 2000 Server; however, Advanced Windows 2000 Server and Windows 2003 Enterprise Edition are supported."
As a general rule when tuning/building a System 9 infrastructure, Hyperthreading should be turned off on all Hyperion servers.
Thanks!

Can't get Hyper-Threading to work on MS-6788

Hi,
I have just purchased a MS-6788 motherboard which I am using in conjuction with a P4 2.8Ghz. I installed Windows XP on to the computer and noticed that the OS can't see hyper-threading. I checked the BIOS and in the section 'Advanced BIOS Features' there isnt the option for 'Hyper Threading Function'. Do you know why this is?
Cheers,
Dan

Sorry to be the bringer of bad tidings but ... The only Socket 478 P4 533mhz that does Hyperthreading is the 3.06. All the other Socket 478 P4 HT processors are the 800mhz flavour.
For confirmation by Intel themselves, see http://processorfinder.intel.com/details.aspx?sSpec=SL6PF and note that under "Supported Features" there is nothing. Also check the 800mhz version of the 2.8 at e.g., http://processorfinder.intel.com/details.aspx?sSpec=SL79K and you will see Hyper-Threading Technology under "Supported Features".
HTH, Ray

Is Hyper-threading enabled on the i5 and i7 iMacs

I am interested in upgrading to a 27" i5 or i7. According to intels site all i-core processors support Hyper-threading. At work I use a quad core Xeon on a HP computer with Windows 7. The system reports that I have 8 cores in performance monitor as it sees each core as 2 cores with Hyper-threading enabled in the Bios.
Does Apple enable hyper-theading in EFI and does Mac OSX see 8 cores in the activity monitor and correctly show the activity of each thread? I suspect if it only shows 4 cores that hyper-threading is not activated on the iMacs. I want to get the most out of the processors capabilities since I am paying a premium for it and so I wont get a current generation machine if it is crippling the processors ability to run 2 threads per core as intel advertises. I would expect with Grand Central in 10.6 that hyper-threading would dramatically increase performance.
Can someone answer this question definitively?

Intels site states clearly that the i3 i5 and i7 all support hyper threading.. if only the i7 supports it on the iMac then apple is crippling the chip..
http://www.intel.com/products/processor/corei5/index.htm
http://www.intel.com/products/processor/corei3/index.htm
So is apple crippling the chip????

Oracle support Intel Hyper Threading??

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