System clock speedup with latest kernels

[Joachim Frieben]

Right,

the main implication of running in "noapic" mode is a performance hit, as
interrupts are not handled as efficiently. For systems that are heavily
interrupt driven (includes those that have a lot of network traffic such as
web servers) this might be measurable. Nonetheless, the benefits of SMP
almost always outweigh this impact. You could try once with and once without
the "noapic" option to measure networking performance respectively.

Cheers,

-JF

> I'm glad to know this... but I am really worried about
> performance in this case, there is a lot of traffic
> between the web server (Apache/PHP) and the database
> server (Oracle 9.2.0.7) so "noapic" wouldn't be a
> viable workaround if it degrades performance.  Any
> advice about this?
>
> Thanks for your comments,
>
>
> -William
>