Re: More cores or higer frequency ?

Dnia 2017-05-23, wto o godzinie 11:39 -0700, Steve Crawford pisze:
> The answer, as always, is "it depends."
>
>
> Can you give us an overview of your setup? The appropriate setup for
> small numbers of long-running analytical queries (typically faster
> CPUs) will be different than a setup for handling numerous
> simultaneous connections (typically more cores).

I have pool of clients (~30) inserting to database about 50 records per
second (in total from all clients) and small numer (<10) clients
querying database for those records once per 10s.
Other queries are rare and irregular.
The biggest table has ~ 100mln records (older records are purged
nightly). Database size is ~13GB.
I near future I'm expecting ~150 clients and 250 inserts per second and
more clients querying database.
Server is handling also apache with simple web application written in
python.
For the same price, I can get 8C/3.2GHz or 14C/2.6GHz. Which one will be
better ?

>
> But CPU is often not the limiting factor. With a better understanding
> of your needs, people here can offer suggestions for memory, storage,
> pooling, network, etc.
>
>
> Cheers,
> Steve
>
>
>
> On Tue, May 23, 2017 at 11:29 AM, Jarek <jarek(at)poczta(dot)srv(dot)pl> wrote:
> Hello!
>
> I've heavy loaded PostgreSQL server, which I want to upgrade,
> so it will
> handle more traffic. Can I estimate what is better: more cores
> or
> higher frequency ? I expect that pg_stat should give some
> tips, but
> don't know where to start...
>
> best regards
> Jarek
>
>
>
> --
> Sent via pgsql-performance mailing list
> (pgsql-performance(at)postgresql(dot)org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-performance
>
>