From: wenhang.pan <wenhang.pan@qunar.com>
To: pgsql-admin@postgresql.org
Subject: multiple process of PostgreSQL running on the same port and same directory
Date: Tue, 28 Jul 2015 14:23:59 +0800
Message-ID: <55B71FFF.8080601@qunar.com> (raw)
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This is the processes I catched:
postgres 5260 0.0 0.0 1224332 37232 ? S Jul13 0:13 \
/opt/pg94/bin/postgres -D /export/pg940_data
postgres 31193 0.0 0.0 1224332 976 ? Ss 00:20 0:00 \
/opt/pg94/bin/postgres -D /export/pg940_data
I found the similar question: ps output shows multiple instances of
PostgreSQL running on the same port
<http://www.postgresql.org/message-id/27699.1347932194@sss.pgh.pa.us; ,
but I wanna konw when to fork a postmaster process, and what does it do.
PostgreSQL version:
postgres=# select version();
version
--------------------------------------------------------------------------------------------------------------
PostgreSQL 9.4.4 on x86_64-unknown-linux-gnu, compiled by gcc (GCC)
4.4.7 20120313 (Red Hat 4.4.7-3), 64-bit
(1 row)
Thanks.
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To: pgsql-admin@postgresql.org
Cc: wenhang.pan@qunar.com
Subject: Re: multiple process of PostgreSQL running on the same port and same directory
In-Reply-To: <55B71FFF.8080601@qunar.com>
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