An interesting example of performance using SQL workers and different tricks...

Doug Easterbrook doug at
Mon Nov 28 17:07:36 UTC 2022

hi Sten

Are you comparing this to earlier postgres performance, or just pleasantly surprised at what the M1 mac’s can do vis-a-vis performance.

I have 14.6 on my machine - I haven’t taken the jump to the next version — so I wanted to know if I should be looking for something noticeable (I hope so)

Doug Easterbrook
Arts Management Systems Ltd.
mailto:doug at
Phone (403) 650-1978

> On Nov 28, 2022, at 7:38 AM, Sten-Erik Björling <s-e.bjorling at> wrote:
> Hi all,
> Done some testing after some optimisation using the DVD Rental example database running on PostgreSQL 15 on a MacBook Pro Max with a 5-client web server….
> Calls per second: 350
> Processing load on one processor: 46%
> The number of active connections to PostgreSQL: 5 (equal load distribution).
> Of course, there will be latencies etc. involved in a real implementation but this performance is impressive. A 10-user license might achieve close to 650 calls per second with a full load on one processor core.
> Good to know - especially since an optimal server structure for a small implementation is an Apple Studio Max - drawing around 30 Wats for all CPU cores. For one core maybe a total of 15 watts…
> Take care, all the best…
> Stene
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