Обсуждение: Help disk-pages

От:
lax@interfree.it ()
Дата:

Hi all! I'm new to Postgresql and I'm trying solve a problem: is there a way to know how many disk-pages are read
duringa query? Because I found out only how many disk-pages a relation has and I'd like to know if there is a system 
catalog or something else that stores this information

thanks,
Andrea Lazzarotto

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От:
Bruce Momjian
Дата:

See postgres -t and the statistics tables to see block read, and the
chapter on Disk Space Monitor to find disk sizes.

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 wrote:
>
> Hi all! I'm new to Postgresql and I'm trying solve a problem: is there a way to know how many disk-pages are read
duringa query? Because I found out only how many disk-pages a relation has and I'd like to know if there is a system 
> catalog or something else that stores this information
>
> thanks,
> Andrea Lazzarotto
>
> -----------------------------------------------------
>
> Salve, il messaggio che hai ricevuto
> � stato inviato per mezzo del sistema
> di web mail interfree. Se anche tu vuoi
> una casella di posta free visita il
> sito http://club.interfree.it
> Ti aspettiamo!
>
> -----------------------------------------------------
>
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
>

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