Re: So, is COUNT(*) fast now?

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От Bruce Momjian
Тема Re: So, is COUNT(*) fast now?
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Msg-id 201110281216.p9SCGwX12307@momjian.us
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Ответ на Re: So, is COUNT(*) fast now?  (Tom Lane <tgl@sss.pgh.pa.us>)
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Tom Lane wrote:
> I wonder how trustworthy the measure of the visibilitymap_test call site
> as a consumer of cycles really is.  I've frequently noticed that
> oprofile blames remarkably large fractions of the runtime on individual
> statements that appear to be quite trivial.  I'm not sure if that

Are these statements perhaps near kernel calls?

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + It's impossible for everything to be true. +


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