Re: Postgres Load Profile

Thank you, Ron!

On Mon, Nov 3, 2025 at 6:49 PM Ron Johnson <ronljohnsonjr(at)gmail(dot)com> wrote:

> On Mon, Nov 3, 2025 at 5: 56 PM Sam Stearns <sam. stearns@ dat. com>
> wrote: Howdy, Does Postgres have any tables you can query to find out
> information such as: Logical reads Block changes Physical reads Physical
> writes Read IO requests Write
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> On Mon, Nov 3, 2025 at 5:56 PM Sam Stearns <sam(dot)stearns(at)dat(dot)com> wrote:
>
>> Howdy,
>>
>> Does Postgres have any tables you can query to find out information such
>> as:
>>
>> - Logical reads
>> - Block changes
>> - Physical reads
>> - Physical writes
>> - Read IO requests
>> - Write IO requests
>> - Read IO (MB)
>> - Write IO (MB)
>>
>>
> https://www.postgresql.org/docs/17/monitoring-stats.html
>
>
>>
>> - User calls
>> - Parses (SQL)
>> - Hard parses (SQL)
>> - Executes (SQL)
>>
>> Probably not unless you want to set log_statement=all and then
> parse log_directory/log_filename.
>
>
>>
>> - Transactions per second
>>
>> Does TPS make any sense beyond when DBMS is running a "strict
> monoculture" application like OLTP with *zero* report generation?
> Because a five hour SELECT that joins 42 tables in addition to 37 hairy
> subqueries is just as much a transaction as is a 5 microsecond SELECT of
> one customer's records using a hash index, and an equally fast INSERT of
> three records.
>
> --
> Death to <Redacted>, and butter sauce.
> Don't boil me, I'm still alive.
> <Redacted> lobster!
>

--

Samuel Stearns
Team Lead - Database
c: 971 762 6879 | o: 971 762 6879 | DAT.com

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