John Hansen wrote:
> > > > I ran some tests last week and can report results similar on Tom's test:
> > > >
> > > > pgbench -i -s 10 bench
> > > > pgbench -c 10 -t 10000 bench
> > > >
>
> don't you have to specify the scaling factor for the benchmark as well?
> as in pgbench -c 10 -t 10000 -s 10 bench ?
>
> > I just tried and got 115tps with fsync off vs 100 with fsync on, so
> > fsync is certainly doing something.
>
> well, I usually get results that differ by that much from run to run.
> Probably you ran in to more checkpoints on the second test.
>
> Also, did you reinitialize the bench database with pgbench -i ?
I destroyed the database and recreated it.
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