Transaction Speed and real time database

From: "moises" <moises(at)cedaivc(dot)co(dot)cu>
To: "'Adnan DURSUN'" <a_dursun(at)hotmail(dot)com>
Cc: <pgsql-hackers(at)postgresql(dot)org>
Subject: Transaction Speed and real time database
Date: 2006-07-21 07:38:41
Message-ID: 20060721133804.256C19FAD5A@postgresql.org
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Thanks for your answer,

I have experience with postgres and I know perfectly that not a TOY.

But some concepts of real time system don’t based only in speed.

Real time databases needs some other kinds of semantics and features that
postgres don’t have.

Postgres don’t supports real time constrains semantics in transactions. In
other hands the concurrent transactions don’t wok well based on priorities
of task.

The program scheduler of transaction based on real time mechanism like
system how RTAI, or RTlinux, and much more.

POstrgres need to be extending for real time databases.

I want to know, in a hypothetical server, how many transaction postgres
support for a first approximation.

I found this data of MySQL and DB4o data bases but I can´t find any of
Postgres.

A mite that postgres is slow, but I need some numbers, insertion speed, and
update speed is the more important part?

Thanks

M.

_____

De: Adnan DURSUN [mailto:a_dursun(at)hotmail(dot)com]
Enviado el: jueves, 20 de julio de 2006 23:05
Para: moises; pgsql-hackers(at)postgresql(dot)org
Asunto: Re: [HACKERS] Transaction Speed

This depends on your server capability and performance.. You can
use PostgreSQL as real time database. It is real not a toy :-)

Adnan DURSUN
ASRIN Bilisim Ltd.

Turkey

----- Original Message -----

From: moises <mailto:moises(at)cedaivc(dot)co(dot)cu>

To: pgsql-hackers(at)postgresql(dot)org

Sent: Thursday, July 20, 2006 3:36 PM

Subject: [HACKERS] Transaction Speed

Can any body talk me how many transactions make postgres in a second?

For example Inserts, Update, delete, etc.

I’m very interesting in this data, because I want to use postgres for a real
time database for process control.

Thanks and regards

________________________________________

M.Sc.Moisés Herrera Vázquez

Especialista Superior en Automática

Empresa de Automatización Integral, CEDAI

Sucursal Villa Clara.

Teléfono: (53) 42 -203311

_______________________________________

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