Re: Scaling / Number of simultanous connections

Hi,

Thanks to everybody for the answers. Indeed, not all the time there is
traffic on all those connections.

Thanks, best regards, Nico

Op ma 11 feb. 2019 om 12:40 schreef Nico Callewaert <
app(dot)development1972(at)gmail(dot)com>:

> Hi,
>
> Thanks to everybody for the answers. Indeed, not all the time there is
> traffic on all those connections.
>
> Thanks, best regards, Nico
>
> Op vr 8 feb. 2019 om 22:24 schreef Dwayne A <dwayne(dot)albuquerque(at)gmail(dot)com
> >:
>
>> You could also look at pgbouncer for connection pooling.
>>
>> https://wiki.postgresql.org/wiki/PgBouncer
>>
>> Cheers,
>> Dwayne
>>
>>
>> On Thu., Feb. 7, 2019, 9:57 a.m. Andreas Kretschmer, <
>> andreas(at)a-kretschmer(dot)de> wrote:
>>
>>>
>>>
>>> Am 07.02.19 um 18:43 schrieb Nico Callewaert:
>>> > Hi,
>>> >
>>> > I'm about to start porting a Firebird DB to Postgres. Next thing will
>>> > be upgrading all customers. Most of our customers have around 30 users
>>> > or less. We have a few 'bigger' customers that maybe have 50 users or
>>> > a bit more still. The application is a Delphi application that is in
>>> > fact a 'fat' client that uses a permanent connection to the DB. I've
>>> > read that Postgres uses 1 process per user. So that means 30-50
>>> > processes at the same time.
>>> >
>>> > I have 2 questions about this
>>> > - I guess this situation is not really a heavy workload? Or is it?
>>>
>>> not really, assuming not all connections are active the same time.
>>>
>>> > - And is it correct that a single process cannot access multiple CPU
>>> > cores, so things are not multi threaded? I guess MySQL used that
>>> > argument somewhere, but I'm not sure, forgive me if I'm mistaken.
>>>
>>> yes and no, since 9.6 we can use multiple cores for one query, using
>>> multiple processes.
>>>
>>>
>>> >
>>> > The whole thing boils down to this question: Am I save with 30-50
>>> > simultanous users for speed and scaling?
>>> >
>>>
>>> most likely yes, on modern hardware.
>>>
>>>
>>> Regards, Andreas
>>>
>>> --
>>> 2ndQuadrant - The PostgreSQL Support Company.
>>> www.2ndQuadrant.com
>>>
>>>
>>>