Re: Show lossy heap block info in EXPLAIN ANALYZE for bitmap heap scan

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От Robert Haas
Тема Re: Show lossy heap block info in EXPLAIN ANALYZE for bitmap heap scan
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Msg-id CA+TgmoZp_jb0cNN0d9UCcJD+nM6YH2s7v9MD1ri8gf6Km8o53w@mail.gmail.com
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Ответ на Show lossy heap block info in EXPLAIN ANALYZE for bitmap heap scan  ("Etsuro Fujita" <fujita.etsuro@lab.ntt.co.jp>)
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On Thu, Jan 9, 2014 at 10:57 PM, Etsuro Fujita
<fujita.etsuro@lab.ntt.co.jp> wrote:
> 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.

Looks good to me, so committed.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company



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