Re: Postgres Process in Kernel Mode? - Mailing list pgsql-hackers
| From | Chris Browne |
|---|---|
| Subject | Re: Postgres Process in Kernel Mode? |
| Date | |
| Msg-id | 60slkhjwrr.fsf@dba2.int.libertyrms.com Whole thread Raw |
| In response to | Postgres Process in Kernel Mode? ("moises" <moises@cedaivc.co.cu>) |
| List | pgsql-hackers |
moises@cedaivc.co.cu ("moises") writes:
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'>Hello,<o:p></o:p></span></font></p>
>
> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 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></span></font></p>
>
> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 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></span></font></p>
You can easily determine this yourself using ldd. The answer will
vary depending on what options you use when compiling it.
> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 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></span></font></p>
Yes, it doesn't.
> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 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></span></font></p>
>
> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'>I was read some source code of postgres, like, <o:p></o:p></span></font></p>
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'>Postgres.C and others…<o:p></o:p></span></font></p>
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'> <o:p></o:p></span></font></p>
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 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></span></font></p>
>
> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'>I suppose that postgres are ported in a user space
> only. I’m Ok?<o:p></o:p></span></font></p>
That's correct.
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'>Thanks <o:p></o:p></span></font></p>
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'>Moises<o:p></o:p></span></font></p>
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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> 10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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> <p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
> 10.0pt;font-family:Arial'>- <o:p></o:p></span></font></p>
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You might want to consider using an email client that doesn't slobber: <p class=MsoNormal><font size=2 face=Arial><span
lang=EN-GBstyle='font-size: 10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
around everywhere.
It's really irritating to have to read around that "deteriorata."
--
(format nil "~S@~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
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