| From: | Craig Ringer <craig(at)2ndquadrant(dot)com> |
|---|---|
| To: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: auto_explain sample rate |
| Date: | 2015-06-03 08:20:57 |
| Message-ID: | CAMsr+YHQpsAdrzaPg0xsJv5=WG5gdqHx71p-xe-wiqxb4B7=4A@mail.gmail.com |
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| Lists: | pgsql-hackers |
>
>
>> lot of variants - I would to see cost and times for EXPLAIN ANALYZE every
> time - but the precision of time can be reduced to 1ms. It is question if
> we can significantly reduce the cost (or number of calls) of getting system
> time.
>
> Pavel
>
>
>
OK, so you're suggesting a sampling-based EXPLAIN.
That'd be interesting, but is totally unrelated to this work on
auto_explain.
--
Craig Ringer http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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