On Tue, Jul 12, 2022 at 08:49:10PM -0700, Joseph D Wagner wrote:
> > > Before I try to answer that, I need to know how the scheduler works.
>
> > As I understand the term used, there is no scheduler inside Postgres
> > for user connections -- they're handled by the OS kernel.
>
> Then, I'm probab
Before I try to answer that, I need to know how the scheduler works.
As I understand the term used, there is no scheduler inside Postgres
for user connections -- they're handled by the OS kernel.
Then, I'm probably using the wrong term. Right now, I have
max_worker_processes set to 16. What h
On Tue, Jul 12, 2022 at 03:55:39AM -0700, Joseph D Wagner wrote:
> Before I try to answer that, I need to know how the scheduler works.
>
> Let's say there's a max of 8 worker process, and 12 queries trying to run.
> When does query #9 run? After the first of 1-8 completes, simple FIFO?
> Or somet
On Tue, Jul 12, 2022 at 5:55 PM Joseph D Wagner
wrote:
> Before I try to answer that, I need to know how the scheduler works.
As I understand the term used, there is no scheduler inside Postgres for
user connections -- they're handled by the OS kernel. That's probably why
it'd be a difficult proj
>> I think it would be better if work_mem was allocated from a pool
>> of memory
> I think this has been proposed before, and the issue/objection
> with this idea is probably that query plans will be inconsistent,
> and end up being sub-optimal.
> work_mem is considered at planning time, but I t
On Sun, Jul 10, 2022 at 08:45:38PM -0700, Joseph D Wagner wrote:
> However, that's risky because it's 3GB per operation, not per
> query/connection; it could easily spiral out of control.
This is a well-known deficiency.
I suggest to dig up the old threads to look into.
It's also useful to includ
I'm new here, so forgive me if this is a bad idea or my lack of knowledge on
how to optimize PostgreSQL.
I find PostgreSQL to be great with a large number of small transactions,
which covers most use cases. However, my experience has not been so great
on the opposite end -- a small number of larg
