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

On Thu, 2004-04-22 at 10:37 -0700, Josh Berkus wrote:
> Tom,
>
> > The tricky
> > part is that a slow adaptation rate means we can't have every backend
> > figuring this out for itself --- the right value would have to be
> > maintained globally, and I'm not sure how to do that without adding a
> > lot of overhead.
>
> This may be a moot point, since you've stated that changing the loop timing
> won't solve the problem, but what about making the test part of make?   I
> don't think too many systems are going to change processor architectures once
> in production, and those that do can be told to re-compile.

Sure they do - PostgreSQL is regularly provided as a pre-compiled
distribution.  I haven't compiled PostgreSQL for years, and we have it
running on dozens of machines, some SMP, some not, but most running
Debian Linux.

Even having a compiler _installed_ on one of our client's database
servers would usually be considered against security procedures, and
would get a black mark when the auditors came through.

Regards,
                    Andrew McMillan
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