Subject: Re: PostgreSQL
To: None <firstname.lastname@example.org, email@example.com,>
From: Ignatios Souvatzis <firstname.lastname@example.org>
Date: 02/02/2006 12:36:37
On Wed, Feb 01, 2006 at 06:58:04PM -0800, Alfred Perlstein wrote:
> Also, I'm pretty sure that synchronization between threads doesn't
> require locked bus cycles, only atomic ops, again another saving.
If this was the case, I'd be very interested in your definition of
"locked bus cycle" vs. "atomic ops".
In a multi-CPU (with non-shared cache) system, you have to implement
atomic operations via some sort of locked bus cycles.
This is independent of the thread vs. processes-with-a-shared-variable
P.S.: Why, exactly, is this discussion on tech-net, among others?
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