| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Patrick Donlin <pdonlin(at)oaisd(dot)org> |
| Cc: | Kevin Grittner <kevin(dot)grittner(at)wicourts(dot)gov>, pgsql-performance <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: Identical query slower on 8.4 vs 8.3 |
| Date: | 2010-07-15 15:21:33 |
| Message-ID: | 1279207110-sup-2392@alvh.no-ip.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
Excerpts from Patrick Donlin's message of jue jul 15 11:12:53 -0400 2010:
> I'll read over that wiki entry, but for now here is the EXPLAIN ANALYZE output assuming I did it correctly. I have run vacuumdb --full --analyze, it actually runs as a nightly cron job.
These plans seem identical (though the fact that the leading whitespace
was trimmed means it's untrustworthy -- please in the future send them
as text attachments instead so that your mailer doesn't interfere with
formatting). The 8.4 plan is even a full second faster, according to
the "total runtime" line.
The slowness could've been caused by caching effects ...
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