| From: | Alfred Perlstein <bright(at)wintelcom(dot)net> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | Matthew <matt(at)ctlno(dot)com>, "'paitoon butri'" <pbt_10400(at)yahoo(dot)com>, pgsql-admin(at)postgresql(dot)org |
| Subject: | Re: PostgreSQL + SMP |
| Date: | 2000-12-10 20:26:30 |
| Message-ID: | 20001210122630.J16205@fw.wintelcom.net |
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| Lists: | pgsql-admin |
* Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> [001210 12:19] wrote:
> > Postgre is not threaded, but every connection gets it's own process. The OS
> > will distribute the processes across the processors. Not sure I said that
> > very will.
> >
> > Basically a single connection will not be any faster with SMP, but multiple
> > connections will be.
>
> Actually, even a single process will be faster because all other system
> process will run on other cpu's.
Depending on how idle you are, the large overhead of bus locking
can cause a lot of perf degredation(sp?) for the idle SMP case.
--
-Alfred Perlstein - [bright(at)wintelcom(dot)net|alfred(at)freebsd(dot)org]
"I have the heart of a child; I keep it in a jar on my desk."
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