On Tue, Jan 31, 2023 at 8:07 AM Dimitrios Apostolou <ji...@gmx.net> wrote:


>     ->  Seq Scan on public.test_runs_raw  (cost=0.00..9250235.80
> rows=317603680 width=42) (actual time=745910.672..745910.677 rows=10
> loops=1)
>           Output: run_n, test_name_n, workitem_n, started_on, duration_ms,
> test_result_n, test_executable_n, test_function_n, test_datatag_n
>           Buffers: shared read=2334526
>           I/O Timings: shared/local read=691137.029
>

The system has to return 10 live rows to you.  If it needs to search
through that many buffers to find 10 live rows you most likely have a large
bloating problem going on.  Seems like it is time to vacuum full.

David J.

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