Re: Timing of 'SELECT 1'
От | Bruce Momjian |
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Тема | Re: Timing of 'SELECT 1' |
Дата | |
Msg-id | 200403101643.i2AGhmg16271@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Timing of 'SELECT 1' (Bruce Momjian <pgman@candle.pha.pa.us>) |
Ответы |
Re: Timing of 'SELECT 1'
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Список | pgsql-hackers |
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) 359-1001+ If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania19073
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