Block size recommendation for Red Hat Linux 7.2

From: chiru r <chirupg(at)gmail(dot)com>
To: Forums postgresql <pgsql-general(at)postgresql(dot)org>
Subject: Block size recommendation for Red Hat Linux 7.2
Date: 2017-04-24 15:41:19
Message-ID: CA+RSxMhFUdSMzXbifqUAmgo=92a81ZFrH-EfkAH9Nn0q52UC4Q@mail.gmail.com
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Hello,

I am building new server to run PostgreSQL 9.5.4 version on it. Please
provide the recommended Block size for Linux systems.

We are using PostgreSQL blocks size is 8k default one.

postgres=# show block_size ;
block_size
------------
8192
(1 row)

Is there any recommendation for separate block sizes on OS level for
Pg_xlog, pg_log and Actual data files to improve the performance for
reads/Writes?.

Thanks,
Chiru

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