Re: Threaded PosgreSQL server

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От Haroldo Stenger
Тема Re: Threaded PosgreSQL server
Дата
Msg-id 3C6209DB.5DDDEA42@adinet.com.uy
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Ответ на Re: Threaded PosgreSQL server  (Brian Bruns <camber@ais.org>)
Ответы Re: Threaded PosgreSQL server  ("Marc G. Fournier" <scrappy@hub.org>)
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Brian Bruns wrote:
> 
> On Wed, 6 Feb 2002, Haroldo Stenger wrote:
> 
> > > > that mutating PG thread safe, will slow down a 7.3 release a lot,
> > > > something not wanted by many here.
> > >
> > > Depends on how it is handled ...
> >
> > How do you see it not slowing down, when key developers said their view is that
> > multithreading will pose a major obstacle? Are you envisioning any special
> > approach not already talked about?
> 
> Excuse my butting in, but it large part we are talking about changing
> things like:
> 
> if (PqSomeStaticOrGlobalVariable) { ... }
> 
> to
> 
> if (MyPort->PqSomeVariable) { ... }
> 
> converting to thread safety should not, at least for this kind of low
> hanging fruit, have any negative performance impact.  And from my vantage
> point it takes out a whole lot of "where did that come from and who set it
> when?" kinda questions when reading the code.  Of course I'm just getting
> my feet wet so feel free to correct my first impressions.

Just that when I said "will slow down a 7.3 release a lot", I was referring to
*the date of the release*, not its inherent performance, the code to be
multi-threaded or not. It was a software engineering sort of consideration. 

Regards,
Haroldo.


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