| From: | Michael Monnerie <lists(dot)michael(dot)monnerie(at)is(dot)it-management(dot)at> |
|---|---|
| To: | pgsql-admin(at)postgresql(dot)org |
| Subject: | Re: EXPLAIN time difference in real |
| Date: | 2014-04-26 17:48:19 |
| Message-ID: | 535BF163.9070401@is.it-management.at |
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| Lists: | pgsql-admin |
Am 26.04.2014 16:17, schrieb Jov:
> Maybe your data or index is read from disk for some write heavy load
> time,your sql get 1300ms.when you explain analyze the sql,the data and
> index already in cached in the memory.
>
> you can verify this by restart the server and run the sql from a fresh
> start postgresql.
>
Tried that:
EXPLAIN ANALYZE....
Total runtime: 280.537 ms
EXPLAIN:LOG: duration: 1501.807 ms statement: EXPLAIN ANALYZE VERBOSE
SELECT
So again 1500ms versus 280ms. Why?
--
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Michael Monnerie, Ing. BSc, Tel: +43 660 415 6531
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