Re: pg_stat_statements: improve loading and saving routines for the dump file

What does this patch give on aglobal scale? Does it save much memory or
increase performance? How many times?

On 1/21/25 13:51, m(dot)litsarev(at)postgrespro(dot)ru wrote:
>> // Mutex should be last field, as this field isn't copied to dump file
> Updated.
>
>> 2) You didn't take into account the upgrade. Saved in Postgres with
>> this byte and try to load in version without this byte.
> The PGSS_DUMP_FILE format is defined by PGSS_FILE_HEADER magic number
> (the first four bytes in the dump file). Once they does not coinside
> (when the file is being read) the statistics are not loaded from the
> dump file and set to zero and the irrelevant dump file is skipped.
> This is the actual behaviour implemented in the code.
>
> Respectfully,
>
> Mikhail Litsarev,
> Postgres Professional: https://postgrespro.com

--
Best wishes,
Ivan Kush
Tantor Labs LLC