Re: Oracle Licences Req on Intel Xeon CPU

http://www.microsoft.com/windows2000/server/evaluation/performance/reports/hyperthread.asp has a link to an article that has the BIOS requirement for logical CPU numbering (and start-up order).

Note: since Windows 2000 Server does support up to four CPU's, the task manager does display 4 CPU's on a hyperthreaded dual XEON computer.

Have Fun :)

david hill wrote:

>
> Yes Redhat Advanced Server 2.1 does support hyperthreading.
> Its not to bad either. I ran some tests and we get about a 15%
> increase in performance with hyperthreading turned on.
>
>
>
> -----Original Message-----
> From: Michael Brown [mailto:mbrown_at_glenraven.com]
> Sent: Wednesday, March 26, 2003 8:09 AM
> To: Multiple recipients of list ORACLE-L
> Subject: RE: Oracle Licences Req on Intel Xeon CPU
>
> 2000 only shows 2 CPUs because it cannot take advantage hyperthreading.
> From what I have read (Intel's website, some others), hyperthreading
> requires both BIOS and OS support to be utilized. Currently, XP and the
> newer Linux releases are all that I have seen that will take advantage of
> it.
>
> My research on this was fairly light since I was just after can Redhat
> Advanced Server support it, but I do remember seeing that W2K would not.
>
> --
> Michael Brown Glen Raven, Inc./Info Services
> Senior Oracle DBA 1831 N. Park Ave
> Phone: (336)586-1146 Glen Raven, NC 27217
> Fax: (336)586-1382 mbrown_at_glenraven.com
>
>
> -----Original Message-----
> Sent: Wednesday, March 26, 2003 3:44 AM
> To: Multiple recipients of list ORACLE-L
>
>
> Depending on the OS, Microsoft has different CPU counts. The Windows
> 2000 family
> counts each hyper thread as 1 CPU. In contrast, Windows XP and Windows
> 2003 Server
> count each CPU instead of each hyper thread. Thus, the task manager in
> Windows XP
> Professional show 4 CPU's (on a dual XEON CPU computer with hyper
> threading
> enabled) while Windows 2000 Professional only shows 2 CPU's in the task
> manager.
>
> Have Fun :)
>
> tjambu_fatcity_at_yahoo.com.au wrote:
>
> >Hi all
> >
> >For those that are running or intending on running Oracle on
> >Intel's Xeon CPU, the following information may be of interest to you.
> >
> >The Xeon CPU has a feature called Hyper Threading with double the number
> >of registers. This feature when turned will present to the Operating
> >Systems an additional virtual CPU. As far as the O/S is concern, it
> >looks like there are _two_ CPUs. What does this mean to your software
> >licensing?
> >
> >Microsoft says that it is one CPU. What does Oracle say?
> >
> >Well, it depends on who you speak to and what day of the week it is.
> >Seriously, you will need to get some confirmation in writing from your
> >account manager the next time you purchase Oracle S/w for Intel's Xeon
> >
> >ta
> >tony
> >
> > _____ ________ / ____|Tony Jambu, Database&Web Consultant
> > /_ _ /_ __ / |Wizard Consulting Pty Ltd
> > /(_)/ )(_/ \_/(///(/_)/_( |IOUG's Select Asia-Pacific Tech. Editor
> > \_______/ |EMAIL: TJambu @ wizard.cx (REMOVE
> Spaces from
> email )
> >----------------------------|PHONE: +61-419-TJAMBU(852628)
> >
> >
> >
>
>
>
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