Re: Proposal : For Auto-Prewarm.

From: Mithun Cy <mithun(dot)cy(at)enterprisedb(dot)com>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Jim Nasby <Jim(dot)Nasby(at)bluetreble(dot)com>, Beena Emerson <memissemerson(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Proposal : For Auto-Prewarm.
Date: 2017-01-31 16:40:59
Message-ID: CAD__OugHoWdW=xLfv_AgwmrcSAMWO_gS2D8YDFFAhJt=GsvTYw@mail.gmail.com
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On Tue, Jan 31, 2017 at 9:47 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> Now, I assume that this patch sorts the I/O (although I haven't
> checked that) and therefore I expect that the prewarm completes really
> fast. If that's not the case, then that's bad. But if it is the
> case, then it's not really hurting you even if the workload changes
> completely.

-- JFYI Yes in the patch we load the sorted
<DatabaseId,TableSpaceId,RelationId,Forknum,BlockNum>.

--
Thanks and Regards
Mithun C Y
EnterpriseDB: http://www.enterprisedb.com

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