| From: | Masahiko Sawada <masahiko(dot)sawada(at)2ndquadrant(dot)com> |
|---|---|
| To: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
| Cc: | Peter Geoghegan <pg(at)bowt(dot)ie>, Julien Rouhaud <rjuju123(at)gmail(dot)com>, Dilip Kumar <dilipbalaut(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: pg_stat_statements issue with parallel maintenance (Was Re: WAL usage calculation patch) |
| Date: | 2020-04-07 09:29:58 |
| Message-ID: | CA+fd4k5EK6ko-k_MnPiRp1R=4YV4poBGUAuNbA5qwnXvZSaMVw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, 7 Apr 2020 at 17:42, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>
> On Tue, Apr 7, 2020 at 1:30 PM Masahiko Sawada
> <masahiko(dot)sawada(at)2ndquadrant(dot)com> wrote:
> >
> > Buffer usage statistics seem correct. The small differences would be
> > catalog lookups Peter mentioned.
> >
>
> Agreed, but can you check which part of code does that lookup? I want
> to see if we can avoid that from buffer usage stats or at least write
> a comment about it, otherwise, we might have to face this question
> again and again.
Okay, I'll check it.
Regards,
--
Masahiko Sawada http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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