From: | "mcelroy, tim" <tim(dot)mcelroy(at)bostonstock(dot)com> |
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To: | 'Steve Poe' <spoe(at)sfnet(dot)cc> |
Cc: | "'pgsql-performance(at)postgresql(dot)org'" <pgsql-performance(at)postgresql(dot)org> |
Subject: | Re: PG Statistics |
Date: | 2006-03-14 13:51:17 |
Message-ID: | 0C4841B42F87D51195BD00B0D020F5CB044B246A@morpheus.bostonstock.com |
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Lists: | pgsql-performance |
Thanks you Steve. As mentioned in my other reply to Michael Fuhr I'll post
the results from tests to be performed this week.
Tim
-----Original Message-----
From: Steve Poe [mailto:spoe(at)sfnet(dot)cc]
Sent: Monday, March 13, 2006 7:38 PM
To: mcelroy, tim
Cc: 'pgsql-performance(at)postgresql(dot)org'
Subject: Re: [PERFORM] PG Statistics
Tim,
When I have done ODBC load tests with stats_block_level enabled on (20
mins. per test), I've seen about 3-4% performance hit. Your mileage may
vary.
Steve Poe
On Mon, 2006-03-13 at 18:49 -0500, mcelroy, tim wrote:
> Good evening,
>
> Does anyone know how much of a performance hit turning
> stats_block_level and stats_row_level on will incur? Do both need to
> be on to gather cache related statistics? I know the
> annotated_conf_80 document states to only turn them on for debug but
> if they're not that performance intensive I cannot see the harm.
>
> Thank you,
> Tim McElroy
>
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