From: Tom Lane <tgl@sss.pgh.pa.us>
To: Karl Denninger <karl@denninger.net>
Cc: Merlin Moncure <mmoncure@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Performance issue with 8.2.3 - "C" application
Date: Tue, 24 Jul 2007 23:25:06 -0400
Message-ID: <122.1185333906@sss.pgh.pa.us> (raw)
In-Reply-To: <46A6C080.10204@denninger.net>
References: <46A6A549.1040606@denninger.net>
<29633.1185331558@sss.pgh.pa.us>
<46A6BBB1.1020502@denninger.net>
<b42b73150707242015k615c7018s75cc0b804dbb5677@mail.gmail.com>
<46A6C080.10204@denninger.net>
Karl Denninger <karl@denninger.net> writes:
> Hmmmmm..... now that's interesting. Stats collector IS accumulating
> quite a bit of runtime..... me thinks its time to go grab 8.2.4.
I think Merlin might have nailed it --- the "stats collector bug" is
that it tries to write out the stats file way more often than it
should. So any excessive userland CPU time you see is just the tip
of the iceberg compared to the system and I/O costs incurred.
regards, tom lane
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, karl@denninger.net, mmoncure@gmail.com
Subject: Re: Performance issue with 8.2.3 - "C" application
In-Reply-To: <122.1185333906@sss.pgh.pa.us>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox