Some more updates
Did this start after upgrading to 22.04? Or after a certain kernel
upgrade?
For sure it only started with Ubuntu 22.04. We did not had and still
not have any issues on servers with Ubuntu 20.04 and 18.04.
It also happens with Ubuntu 22.10 (Kernel 5.19.0-23-generic).
Hello all!
Thanks for the many hints to look for. We did some tuning and further
debugging and here are the outcomes, answering all questions in a single
email.
In the meantime, you could experiment with setting
checkpoint_flush_after to 0
We did this:
# SHOW checkpoint_flush_after;
Thanks all for digging into this problem.
AFAIU the problem is not related to the memory settings in
postgresql.conf. It is the kernel that
for whatever reasons report ENOMEM. Correct?
Am 2022-11-14 22:54, schrieb Christoph Moench-Tegeder:
## klaus.mailingli...@pernau.at
Hi all!
We have a setup with a master and plenty of logical replication slaves.
Master and slaves are 12.12-1.pgdg22.04+1 runnning on Ubuntu 22.04.
SELECT pg_size_pretty( pg_database_size('regdns') ); is from 25GB (fresh
installed slave) to 42GB (probably bloat)
Replication slaves VMs have
