Re: Show lossy heap block info in EXPLAIN ANALYZE for bitmap heap scan
От | Etsuro Fujita |
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Тема | Re: Show lossy heap block info in EXPLAIN ANALYZE for bitmap heap scan |
Дата | |
Msg-id | 00a901cf0db8$04e2a6e0$0ea7f4a0$@etsuro@lab.ntt.co.jp обсуждение исходный текст |
Ответ на | Re: Show lossy heap block info in EXPLAIN ANALYZE for bitmap heap scan ("Etsuro Fujita" <fujita.etsuro@lab.ntt.co.jp>) |
Список | pgsql-hackers |
I wrote: > Robert Haas wrote: > > Hmm, fair point. But I'm still not convinced that we really need to > > add extra accounting for this. What's wrong with just reporting the > > number of exact and lossy pages? > No. I intended to show the desired memory space for a TIDBitmap rather > than the peak memory usage for that TIDBitmap. And I thought it'd be better > for the latter to be displayed as additional information. However, I've > removed the functionality for showing the desired memory space due to > technical problems. Now I should probably remove the functionality for > showing the peak memory usage too. > Yes, as Andres mentioned, showing the peak memory usage is not a bad idea, > I think. But I start to think it's not necessarily worth complicating the > code ... > If there are no objections of others, I'll remove extra accounting for > showing the peak memory usage. Done. Please find attached a patch. Thanks, Best regards, Etsuro Fujita
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