RE: sql execution time in pg_stat_statements

Hi Tom,

I was out of this list for a while.
Unfortunately, I have now no access to the server where I have seen this.

Best regards

Michel SALAIS

-----Message d'origine-----
De : Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Envoyé : vendredi 10 septembre 2021 19:42
À : Michel SALAIS <msalais(at)msym(dot)fr>
Cc : 'Julien Rouhaud' <rjuju123(at)gmail(dot)com>; 'postgres performance list'
<pgsql-performance(at)postgresql(dot)org>
Objet : Re: sql execution time in pg_stat_statements

"Michel SALAIS" <msalais(at)msym(dot)fr> writes:
> I thaught that total_time (total_exec_time + total_plan_time) included I/O
but when we have blk_read_time + blk_write_time equals several times
total_time it is difficult to continue to think that...

That's an interesting report, but on the whole I'd be more inclined to
disbelieve the I/O timings than the overall time. Can you create a
reproducible test case where this happens? Also, exactly what PG version
and pg_stat_statements version are you using?

regards, tom lane