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From: Merlin Moncure <mmoncure@gmail.com>
To: Craig A. James <cjames@modgraph-usa.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Postgres server crash
Date: Thu, 16 Nov 2006 09:01:28 -0500
Message-ID: <b42b73150611160601s6c76b11blba7114bf17a21ddd@mail.gmail.com> (raw)
In-Reply-To: <455BCAE8.8010905@modgraph-usa.com>
References: <ce4072df0610201305u7836dc7bn437ec0aaf1c3e25f@mail.gmail.com>
	<b42b73150610201811m84369f7kc7d58b39aed3ad73@mail.gmail.com>
	<ce4072df0610230810t5d66bbb8xf1e9c0ed71b6b6c0@mail.gmail.com>
	<20061023215913.GW26892@nasby.net>
	<ce4072df0610240617s72f35540odd3d4e0903313b63@mail.gmail.com>
	<20061025001709.GA26892@nasby.net>
	<453EF7C4.2040105@modgraph-usa.com>
	<455BCAE8.8010905@modgraph-usa.com>

On 11/15/06, Craig A. James <cjames@modgraph-usa.com> wrote:

> Questions:
>   1. Any idea what happened and how I can avoid this?  It's a *big* problem.
>   2. Why didn't the database recover?  Why are there two processes
>      that couldn't be killed?
>   3. Where did the "signal 9" come from?  (Nobody but me ever logs
>      in to the server machine.)

how much memory is in the box?  maybe vmstat will give you some clues
about what is going on leading up to the crash...a spike in swap for
example.  Maybe, if you can budget for it, query logging might give
some clues also.  Try increasing swap.

merlin

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