Re: Buffer Requests Trace - Mailing list pgsql-hackers

From Lucas Lersch
Subject Re: Buffer Requests Trace
Date
Msg-id CAGR3jZBprqps-SJuBs8paZCwMQO11exZdgGraXiSvgwuk_pEww@mail.gmail.com
Whole thread Raw
In response to Re: Buffer Requests Trace  (Stephen Frost <sfrost@snowman.net>)
Responses Re: Buffer Requests Trace
List pgsql-hackers
Sorry, I do not understand the question.

But I forgot to give an additional information: I am printing the page id for the trace file in ReleaseBuffer() only if it is a shared buffer, I am not considering local buffers. I assumed that local buffers were used only for temporary tables.

On Tue, Oct 14, 2014 at 6:25 PM, Stephen Frost <sfrost@snowman.net> wrote:
* Lucas Lersch (lucaslersch@gmail.com) wrote:
> Unfortunately, in the generated trace with over 2 million buffer requests,
> only ~14k different pages are being accessed, out of the 800k of the whole
> database. Am I missing something here?

What do you have shared_buffers set to..?

        Thanks,

                Stephen



--
Lucas Lersch

pgsql-hackers by date:

Previous
From: Stephen Frost
Date:
Subject: Re: Buffer Requests Trace
Next
From: Robert Haas
Date:
Subject: Re: Column Redaction