Re: High CPU load caused by the autovacuum launcher process

I guess the Htop captured by you is for a particular instant. You will have to record the cpu utilisation for a longer duration and then analyze.

On Fri, Jun 8, 2018 at 12:58 PM, Ron <ronljohnsonjr@gmail.com> wrote:

On 06/08/2018 02:24 AM, Owayss Kabtoul wrote:

Hi folks,

I ran into an issue where, on Postgres instances that have a very large number of databases per cluster (~15K), the

I won't ask why there's a cluster with 15,000 databases...

So auto-vacuum never really sleeps. Even changing the autovacuum_naptime and setting it to a much higher value (from 1min to 50min) did not have any effect at all. Both strace and the postgres logs showed a similar behaviour: lots of reads to global.stat file and constantly iterating through all the databases non-stop and executing autovacuum.


Is there anything that I can do to minimize the CPU load impact that this process is having?

What if you disable autovacuum and run it manually?

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