| From: | Andres Freund <andres(at)2ndquadrant(dot)com> |
|---|---|
| To: | Peter Geoghegan <pg(at)heroku(dot)com>,Fujii Masao <masao(dot)fujii(at)gmail(dot)com> |
| Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Mike Blackwell <mike(dot)blackwell(at)rrd(dot)com> |
| Subject: | Re: Performance Improvement by reducing WAL for Update Operation |
| Date: | 2014-02-04 21:58:08 |
| Message-ID: | c7f325f0-1ae1-42f1-a8e3-6847ab90162f@email.android.com |
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| Lists: | pgsql-hackers |
On February 4, 2014 10:50:10 PM CET, Peter Geoghegan <pg(at)heroku(dot)com> wrote:
>On Tue, Feb 4, 2014 at 11:11 AM, Andres Freund <andres(at)2ndquadrant(dot)com>
>wrote:
>>> Does this feature relate to compression of WAL page images at all?
>>
>> No.
>
>So the obvious question is: where, if anywhere, do the two efforts
>(this patch, and Fujii's patch) overlap? Does Fujii have any concerns
>about this patch as it relates to his effort to compress FPIs?
I think there's zero overlap. They're completely complimentary features. It's not like normal WAL records have an irrelevant volume.
Andres
--
Please excuse brevity and formatting - I am writing this on my mobile phone.
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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