On Wed, Dec 20, 2017 at 7:46 AM, Erik Rijkers <e...@xs4all.nl> wrote: > Sorry, that was probably too terse, I should explain that a little. > > After initing 50 instances, I set up and run a pgbench session in the master > session; the pgbench lines are: > > init: pgbench --port=6515 --quiet --initialize --scale=1 postgres > run: pgbench -M prepared -c 16 -j 8 -T 1 -P 1 -n postgres -- scale 1 > > the other instances then catch up. The whole takes 5 minutes or so > > I vary scale, duration, and number of instances. I haven't had it fail in > this way yet but I mostly tried with lower number of instances (up to 25 or > so).
Hm. Are you saying that it takes at least 50 cascading instances to see the problem you are seeing? And that you are not seeing any problems with a lower number of cascading instances? Are you enabling hot_standby_feedback? -- Michael
