Re: Performance Improvement by reducing WAL for Update Operation

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Amit Kapila <amit(dot)kapila(at)huawei(dot)com>
Cc: Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, hlinnakangas(at)vmware(dot)com, noah(at)leadboat(dot)com, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Performance Improvement by reducing WAL for Update Operation
Date: 2012-12-28 11:55:48
Message-ID: CA+U5nMLvM6MBVqDv=UDh_PKavqSN-=2D6admPLFaLofBAQhcVA@mail.gmail.com
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On 28 December 2012 11:27, Amit Kapila <amit(dot)kapila(at)huawei(dot)com> wrote:

>> * The internal docs are completely absent. We need at least a whole
>> page of descriptive comment, discussing trade-offs and design
>> decisions. This is very important because it will help locate bugs
>> much faster if these things are clealry documented. It also helps
>> reviewers. This is a big timewaster for committers because you have to
>> read the whole patch and understand it before you can attempt to form
>> opinions. Commits happen quicker and easier with good comments.
>
> Do you have any suggestion for where to put this information, any particular
> ReadMe?

Location is less relevant, since it will show up as additions in the patch.

Put it wherever makes most sense in comparison to existing related
comments/README. I have no preference myself.

If its any consolation, I notice a common issue with patches is lack
of *explanatory* comments, as opposed to line by line comments. So
same review comment to 50-75% of patches I've reviewed recently, which
is also likely why.

--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

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