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Re: Multiple Postmasters (Linux)

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: operationsengineer1(at)yahoo(dot)com
Cc: "pgsql-novice(at)postgresql(dot)org" <pgsql-novice(at)postgresql(dot)org>
Subject: Re: Multiple Postmasters (Linux)
Date: 2006-04-29 22:22:34
Message-ID: 9663.1146349354@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-novice
<operationsengineer1(at)yahoo(dot)com> writes:
> hi all, i'm looking at ksysguard and i notice that 4
> instances of postmaster are up and running.  

> is this normal?

It's normal to have one postmaster process with three (or more) children, eg

tgl        603  0.0  0.3  39924  3576 ?        S    Apr26   0:00 postmaster -i -F
tgl        607  0.0  2.5  40060 26012 ?        S    Apr26   0:07 postgres: writer process   
tgl        608  0.0  0.0  11936   708 ?        S    Apr26   0:00 postgres: stats buffer process   
tgl        609  0.0  0.0  11172   916 ?        S    Apr26   0:00 postgres: stats collector process   

If you're using a process-viewing tool that calls them all "postmaster",
get a better tool.  Even plain old "ps" can do better than that.
(The above is "ps auxww" output.)

			regards, tom lane

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