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From: A J <s5aly@yahoo.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Kevin Grittner <Kevin.Grittner@wicourts.gov>
Cc: Scott Marlowe <scott.marlowe@gmail.com>
Cc: pgsql-admin@postgresql.org
Subject: Re: Confused by 'timing' results
Date: Thu, 2 Sep 2010 12:21:24 -0700 (PDT)
Message-ID: <555672.38356.qm@web120013.mail.ne1.yahoo.com> (raw)
In-Reply-To: <6595.1283455062@sss.pgh.pa.us>
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	<458444.29196.qm@web120007.mail.ne1.yahoo.com>
	<6595.1283455062@sss.pgh.pa.us>

PostgreSQL 8.4
CentoOS 5.5
I have got WCE=0, on the drive that mounts the data directory with all its 
subdirectory (including pg_log)

Maybe I should try to mount pg_log to a different drive and have write cache 
enabled on that one.




________________________________
From: Tom Lane <tgl@sss.pgh.pa.us>
To: A J <s5aly@yahoo.com>
Cc: Kevin Grittner <Kevin.Grittner@wicourts.gov>; Scott Marlowe 
<scott.marlowe@gmail.com>; pgsql-admin@postgresql.org
Sent: Thu, September 2, 2010 3:17:42 PM
Subject: Re: [ADMIN] Confused by 'timing' results 

A J <s5aly@yahoo.com> writes:
> Do you think changing log_destination to syslog may make a difference

It's worth trying alternatives anyway.  It is odd that you are seeing
such a slowdown when using the collector --- many people push very high
log volumes through the collector without problems.  What PG version is
this exactly, and on what platform?

            regards, tom lane



      

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