Re: Intel-Hyperthread-Linux-Oracle
- From: Richard Ji <richard.c.ji@xxxxxxxxx>
- To: bdbafh@xxxxxxxxx
- Date: Wed, 8 Dec 2004 12:29:57 -0500
I wonder what Oracle's licensing plans are for CPUs that
are: Hyper-threading, dual-core. Anyone has any insights
to share?
Richard
On Wed, 8 Dec 2004 12:21:15 -0500, Paul Drake <bdbafh@xxxxxxxxx> wrote:
> Hermant,
>
> > How does Oracle on Linux treat Intel CPUs with HyperThreading ?
> If you have a busy system that is not bound on physical IO, Oracle
> treats them badly :).
>
> Its a matter of how the operating system treats them.
> I'll assume for a minute that you are talking about RHEL 3.0 ES Update
> 2- but this could be for any Linux.
>
> During boot, the OS maps the run queue of the logical CPU to the physical CPU.
> In this manner, if the number of processes that are running is less
> than or equal to the number of physical CPUs, then the logical CPUs
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