Re: Timing of 'SELECT 1'

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От Bruce Momjian
Тема Re: Timing of 'SELECT 1'
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Msg-id 200403101643.i2AGhmg16271@candle.pha.pa.us
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Ответ на Timing of 'SELECT 1'  (Bruce Momjian <pgman@candle.pha.pa.us>)
Ответы Re: Timing of 'SELECT 1'  ("Alex J. Avriette" <alex@posixnap.net>)
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Neil Conway wrote:
> Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > I am timing small queries, and found that a PREPARE/EXECUTE of
> > "SELECT 1" takes about 1.2ms on my machine.  A normal SELECT doesn't
> > take much longer, so I am wondering why a simpler query isn't
> > faster.
> 
> log_executor_stats output isn't really too helpful -- if you can get
> some gprof or oprofile output, we might have a better chance of seeing
> if there is anything we can improve.

The problem with gprof is that I am going to see all the backend startup
stuff too, no?  Is there a way to get a dump just the run of the query?

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
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