| From: | Fujii Masao <masao(dot)fujii(at)oss(dot)nttdata(dot)com> |
|---|---|
| To: | Justin Pryzby <pryzby(at)telsasoft(dot)com> |
| Cc: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Peter Geoghegan <pg(at)bowt(dot)ie>, Julien Rouhaud <rjuju123(at)gmail(dot)com>, "Tharakan, Robins" <tharar(at)amazon(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: track_planning causing performance regression |
| Date: | 2021-04-21 14:38:52 |
| Message-ID: | b86e33bf-d549-db6b-f50b-3cb077807a71@oss.nttdata.com |
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| Lists: | pgsql-hackers |
On 2021/04/19 23:55, Justin Pryzby wrote:
> What does "kind" mean ? I think it means a "normalized" query or a "query
> structure".
>
> "a fewer kinds" is wrong, so I think the docs should say "a small number of
> queries" or maybe:
Okay, I agree to update the description.
>>>> Enabling this parameter may incur a noticeable performance penalty,
>>>> especially similar queries are run by many concurrent connections and
>>>> compete to update the same pg_stat_statements entry
"a small number of" is better than "similar" at the above because
"similar" sounds a bit unclear in this case?
It's better to use "entries" rather than "entry" at the above?
Regards,
--
Fujii Masao
Advanced Computing Technology Center
Research and Development Headquarters
NTT DATA CORPORATION
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