| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Josh Berkus <josh(at)agliodbs(dot)com>, Greg Stark <stark(at)mit(dot)edu>, "<pgsql-hackers(at)postgresql(dot)org>" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Some belated patch review for "Buffers" explain analyze patch |
| Date: | 2010-02-09 22:07:25 |
| Message-ID: | 24716.1265753245@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Tue, Feb 9, 2010 at 3:26 PM, Josh Berkus <josh(at)agliodbs(dot)com> wrote:
>> I'd prefer to have the average; it's very confusing to have an explain
>> row which has the cost per iteration, but the buffer usage per node.
> The cost per iteration thing is IMO one of the most confusing parts of
> the EXPLAIN output; I'm not really eager to see us replicate that
> elsewhere.
Well, if you want to put forward a proposal to get rid of that approach
entirely, go ahead. But it doesn't seem like a good idea to me for
EXPLAIN to print some numbers according to one viewpoint and some
according to the other.
regards, tom lane
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