Question about storage subsystem of PotgreSQL

On Sat, Jun 1, 2013 at 02:11:13PM +0430, javadi wrote:

Hi

I want to find some architectural information about the storage
subsystem of PostgreSQL especially the modulus which are responsible to
loading data from disk to the Shared Buffer. I cannot find any
structured and useful information on web.

Would you please help me to find such information.

Should I read the source code?

Which part of code is responsible to reading data from the disk?

You should read the developer's FAQ:

http://wiki.postgresql.org/wiki/Developer_FAQ

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Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ It's impossible for everything to be true. +

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javadi <seyyedahmad.javadi@gmail.com> wrote:

I want to find some architectural information about the storage
subsystem of PostgreSQL especially the modulus which are responsible to
loading data from disk to the Shared Buffer.  I cannot find any
structured and useful information on web.

Would you please help me to find such information.

Should I read the source code?

Which part of code is responsible to reading data from the disk?

You might find the README for the storage manager helpful:

http://git.postgresql.org/gitweb/?p=postgresql.git;a=blob;f=src/backend/storage/smgr/README

--
Kevin Grittner
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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