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Re: Postgres Process in Kernel Mode?

From:	Chris Browne <cbbrowne(at)acm(dot)org>
To:	pgsql-hackers(at)postgresql(dot)org
Subject:	Re: Postgres Process in Kernel Mode?
Date:	2006-07-31 21:21:28
Message-ID:	60slkhjwrr.fsf@dba2.int.libertyrms.com
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moises(at)cedaivc(dot)co(dot)cu ("moises") writes:

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> 10.0pt;font-family:Arial'>Hello,<o:p></o:p>
>
> 10.0pt;font-family:Arial'><o:p> </o:p>
>
> 10.0pt;font-family:Arial'>I’m new in postgres SQL and I have some
> questions about the space where postgres process run.<o:p></o:p>
>
> 10.0pt;font-family:Arial'><o:p> </o:p>
>
> 10.0pt;font-family:Arial'><o:p> </o:p>
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> 10.0pt;font-family:Arial'>1-Can any body say me what libs use postgres for make
> system calls, for example LIBC? <o:p></o:p>

You can easily determine this yourself using ldd. The answer will
vary depending on what options you use when compiling it.

> 10.0pt;font-family:Arial'>2-Can any body talk me if some postgres process can
> run in Linux kernel space? <o:p></o:p>

Yes, it doesn't.

> 10.0pt;font-family:Arial'>3- Some body knows if exist some projects that ports postgres
> process on Linux kernel space.<o:p></o:p>
>
> 10.0pt;font-family:Arial'><o:p> </o:p>
>
> 10.0pt;font-family:Arial'><o:p> </o:p>
>
> 10.0pt;font-family:Arial'>I was read some source code of postgres, like, <o:p></o:p>
>
> 10.0pt;font-family:Arial'>Postgres.C and others…<o:p></o:p>
>
> 10.0pt;font-family:Arial'> <o:p></o:p>
>
> 10.0pt;font-family:Arial'>I was found C instructions like Printf, that’s prohibitive
> for Linux kernel applications, for example in kernel mode we use printk.<o:p></o:p>
>
> 10.0pt;font-family:Arial'><o:p> </o:p>
>
> 10.0pt;font-family:Arial'>I suppose that postgres are ported in a user space
> only. I’m Ok?<o:p></o:p>

That's correct.

> 10.0pt;font-family:Arial'><o:p> </o:p>
>
> 10.0pt;font-family:Arial'>Thanks <o:p></o:p>
>
> 10.0pt;font-family:Arial'>Moises<o:p></o:p>
>
> 10.0pt;font-family:Arial'><o:p> </o:p>
>
> 10.0pt;font-family:Arial'><o:p> </o:p>
>
> 10.0pt;font-family:Arial'><o:p> </o:p>
>
> 10.0pt;font-family:Arial'>- <o:p></o:p>
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You might want to consider using an email client that doesn't slobber:
<o:p> </o:p>
around everywhere.

It's really irritating to have to read around that "deteriorata."
--
(format nil "~S(at)~S" "cbbrowne" "ntlug.org")
http://www3.sympatico.ca/cbbrowne/advocacy.html
A cool feature of OOP is that the simplest examples are 500 lines.
-- Peter Sestoft

In response to

Postgres Process in Kernel Mode? at 2006-07-31 14:55:59 from moises

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