| From: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Alexander Pyhalov <a(dot)pyhalov(at)postgrespro(dot)ru>, Alexander Korotkov <aekorotkov(at)gmail(dot)com>, pgsql-hackers(at)lists(dot)postgresql(dot)org, Ronan Dunklau <ronan(dot)dunklau(at)aiven(dot)io> |
| Subject: | Re: SQLFunctionCache and generic plans |
| Date: | 2025-03-30 18:53:02 |
| Message-ID: | CAFj8pRCz4NRas1KNWnE5=8Lg16MNOYPb9OAU3SzDrS+WBy3BBQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
Hi
> We get substantial wins on all of fx, fx3, fx4. fx2 is the
> case that gets inlined and never reaches functions.c, so the
> lack of change there is expected. What I found odd is that
> I saw a small speedup (~6%) on fx5 and fx6; those functions
> are in plpgsql so they really shouldn't change either.
> The only thing I can think of is that I made the hash key
> computation a tiny bit faster by omitting unused argtypes[]
> entries. That does avoid hashing several hundred bytes
> typically, but it's hard to believe it'd amount to any
> visible savings overall.
>
> Anyway, PFA v10.
>
>
I can confirm so all tests passed without problems
Regards
Pavel
> regards, tom lane
>
> [1]
> https://www.postgresql.org/message-id/CAFj8pRDWDeF2cC%2BpCjLHJno7KnK5kdtjYN-f933RHS7UneArFw%40mail.gmail.com
>
>
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