| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: So, is COUNT(*) fast now? |
| Date: | 2011-10-28 12:16:58 |
| Message-ID: | 201110281216.p9SCGwX12307@momjian.us |
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| Lists: | pgsql-hackers |
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(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
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