| From: | Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> |
| Cc: | ams(at)toroid(dot)org, jian he <jian(dot)universality(at)gmail(dot)com>, Andrei Lepikhov <a(dot)lepikhov(at)postgrespro(dot)ru>, Andy Fan <zhihui(dot)fan1213(at)gmail(dot)com>, David Rowley <dgrowleyml(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Report planning memory in EXPLAIN ANALYZE |
| Date: | 2024-01-23 04:46:49 |
| Message-ID: | CAExHW5uSXdM5faT2ksjc=ae1=4fqrLwHzc6GC_GRiAmbARDA2g@mail.gmail.com |
| Views: | Whole Thread | Raw Message | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Thu, Jan 18, 2024 at 5:28 PM Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> wrote:
>
> On 2024-Jan-18, Ashutosh Bapat wrote:
>
> > The EXPLAIN output produces something like below
> > explain_filter
> > ---------------------------------------------------------
> > Seq Scan on int8_tbl i8 (cost=N.N..N.N rows=N width=N)
> > Planning:
> > Memory: used=N bytes, allocated=N bytes
> > (3 rows)
> >
> > but function explain_filter(), defined in explain.sql, removes line
> > containing Planning: and we end up with output
> > explain_filter
> > ---------------------------------------------------------
> > Seq Scan on int8_tbl i8 (cost=N.N..N.N rows=N width=N)
> > Memory: used=N bytes, allocated=N bytes
> > (2 rows)
> >
> > Hence this weird difference.
>
> Ah, okay, that makes sense. (I actually think this is a bit insane, and
> I would hope that we can revert commit eabba4a3eb71 eventually, but I
> don't think that needs to hold up your proposed patch.)
>
Thanks. Attached is rebased and squashed patch.
--
Best Wishes,
Ashutosh Bapat
| Attachment | Content-Type | Size |
|---|---|---|
| 0001-EXPLAIN-reports-memory-consumed-for-plannin-20240123.patch | text/x-patch | 19.6 KB |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Japin Li | 2024-01-23 04:51:45 | Unnecessary smgropen in {heapam_relation,index}_copy_data? |
| Previous Message | Arne Roland | 2024-01-23 04:42:42 | Re: Permute underscore separated components of columns before fuzzy matching |