From: | Laurent Laborde <kerdezixe(at)gmail(dot)com> |
---|---|
To: | Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> |
Cc: | Peter Alban <peter(dot)alban2(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org |
Subject: | Re: same query in high number of times |
Date: | 2009-06-23 08:52:08 |
Message-ID: | 8a1bfe660906230152o59f64720uedc51f2a55a132e2@mail.gmail.com |
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Lists: | pgsql-performance |
On Mon, Jun 22, 2009 at 12:06 AM, Scott Marlowe<scott(dot)marlowe(at)gmail(dot)com> wrote:
> On Sun, Jun 21, 2009 at 12:28 PM, Peter Alban<peter(dot)alban2(at)gmail(dot)com> wrote:
>> Hi,
>>
>> Here is the query :
>> duration: 2533.734 ms statement:
>
> SNIP
>
>> Limit (cost=4313.54..4313.55 rows=3 width=595) (actual
>> time=288.525..288.528 rows=3 loops=1)
>
> According to this query plan, your query is taking up 288
> milliseconds. I'm guessing the rest of the time is actually is spent
> transferring data.
Huuuuuu ...
The cost is _certainly_ not the time in ms.
See the planner cost constants in a config file, or in any good documentation.
--
F4FQM
Kerunix Flan
Laurent Laborde
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