Em dom., 24 de mai. de 2020 às 14:34, Peter Geoghegan <pg@bowt.ie> escreveu:
On Sun, May 24, 2020 at 2:52 AM Ranier Vilela <ranier.vf@gmail.com> wrote: > There was news in Phoronix about the Beta 1 Release of Postgres (1). > Unfortunately for Postgres advocacy it does not bring good news, > it is showing regressions in the benchmarks compared to version 12. > Without going into the technical merits of how the test was done, > they have no way of knowing whether such regressions actually exist or if it is a failure of how the tests were done.
This shellscript appears to be used by Phoronix to run pgbench:
It looks like they're only running pgbench for 60 second runs in all configurations -- notice that "-T 60" is passed to pgbench. I'm not entirely sure that that's all that there is to it. Still, there isn't any real attempt to make it clear what's going on here. I have my doubts about how representative these numbers are for that reason.
I also find it very suspicious.V12 seems to be better at read-only workloads (at least it shows the graphics). I'm using V13, in normal mode (read / write), medium load.