Thomas Kellerer wrote:
If I want to identify a possible bottleneck with the bgwriter, for what kind of numbers do I need to watch out?
You don't much with a single snapshot of pg_stat_bgwriter data. Try saving this instead:

select *,now() from pg_stat_bgwriter;

And then take another snapshot at least a few hours later, preferably the next day. With two snapshots and timestamps on them, then it's possible to make some sense of the numbers.

--
Greg Smith  2ndQuadrant US  Baltimore, MD
PostgreSQL Training, Services and Support
g...@2ndquadrant.com   www.2ndQuadrant.us


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