Re: Wierd context-switching issue on Xeon patch for 7.4.1

Josh Berkus wrote:
> Tom,
>
> > Having to recompile to run on single- vs dual-processor machines doesn't
> > seem like it would fly.
>
> Oh, I don't know. Many applications require compiling for a target
> architecture; SQL Server, for example, won't use a 2nd processor without
> re-installation. I'm not sure about Oracle.
>
> It certainly wasn't too long ago that Linux gurus were esposing re-compiling
> the kernel for the machine.
>
> And it's not like they would *have* to re-compile to use PostgreSQL after
> adding an additional processor. Just if they wanted to maximize peformance
> benefit.
>
> Also, this is a fairly rare circumstance, I think; to judge by my clients,
> once a database server is in production nobody touches the hardware.

A much simpler solution would be for the postmaster to run a test during
startup.

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