Subject: Re: track_planning causing performance regression
To: Justin Pryzby <pryzby@telsasoft.com>
Cc: Pavel Stehule <pavel.stehule@gmail.com>, Peter Geoghegan <pg@bowt.ie>,
 Julien Rouhaud <rjuju123@gmail.com>, "Tharakan, Robins" <tharar@amazon.com>,
 pgsql-hackers@postgresql.org
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From: Fujii Masao <masao.fujii@oss.nttdata.com>
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Date: Thu, 22 Apr 2021 00:13:17 +0900
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On 2021/04/21 23:53, Justin Pryzby wrote:
> Or:
> 
>         Enabling this parameter may incur a noticeable performance penalty,
>         especially similar queries are executed by many concurrent connections
>         and compete to update a small number of pg_stat_statements entries.

I prefer this. But what about using "identical" instead of "similar"
because pg_stat_statements docs already uses "identical" in some places?

Regards,

-- 
Fujii Masao
Advanced Computing Technology Center
Research and Development Headquarters
NTT DATA CORPORATION