Explain analyze on my 8.0.1 installation does report the time for
slower queries but for this small query it reports 0.000 ms

----- Original Message ----- From: "Josh Berkus" <josh@agliodbs.com>
To: <pgsql-performance@postgresql.org>
Cc: "Jean-Pierre Pelletier" <[EMAIL PROTECTED]>; "John Arbash Meinel" <[EMAIL PROTECTED]>
Sent: Thursday, September 22, 2005 6:19 PM
Subject: Re: [PERFORM] Queries 15 times slower on 8.1 beta 2 than on 8.0


First off, you're on Windows?

"  ->  Seq Scan on price p  (cost=0.00..11317.75 rows=581475 width=4)
(actual time=0.004..1143.720 rows=581475 loops=1)"

Well, this is your pain point.   Can we see the index scan plan on 8.1?
Given that it's *expecting* only one row, I can't understand why it's
using a seq scan ...

"Nested Loop Left Join  (cost=0.00..11.02 rows=1 width=0) (actual
time=0.000..0.000 rows=1 loops=1)"
"  ->  Nested Loop Left Join  (cost=0.00..5.48 rows=1 width=4) (actual
time=0.000..0.000 rows=1 loops=1)"
"Total runtime: 0.000 ms"

Feh, this looks like the "windows does not report times" bug, which makes
it hard to compare ...


Josh Berkus
Aglio Database Solutions
San Francisco

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