Re: Implementation Proposal For Add Free Behind Capability For Large Sequential Scan

From: Amit Kumar Khare <skamit2000(at)yahoo(dot)com>
To: Neil Padgett <npadgett(at)redhat(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org, pgman(at)candle(dot)pha(dot)pa(dot)us, param_inder(at)yahoo(dot)com, kharebm(at)yahoo(dot)com
Subject: Re: Implementation Proposal For Add Free Behind Capability For Large Sequential Scan
Date: 2002-02-26 17:30:32
Message-ID: 20020226173032.31730.qmail@web10106.mail.yahoo.com
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--- Neil Padgett <npadgett(at)redhat(dot)com> wrote:
> On Sat, 2002-02-23 at 08:30, Amit Kumar Khare wrote:
>
> > Considering thesesuggestions as our baseline we
> have decided to
> implement Most Recently Used(MRU) cache replacement
> policy. Our task
> will be to identify a large sequentialscan and then
> advice the buffer
> manager to apply MRU for cache replacement.

Neil wrote:
> This could lead to poor buffer performance in the
> case of multiple
> backends simultaneously executing queries. How will
> you handle this?

Certainly it's cause of concern. I am looking for
literature regarding it. I kindly request you all to
inform me if any body finds some thing related to it.

Thanks and Regards
Amit Khare
>
>
> --
> Neil Padgett
> Red Hat Canada Ltd. E-Mail:
> npadgett(at)redhat(dot)com
> 2323 Yonge Street, Suite #300,
> Toronto, ON M4P 2C9
>

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