Re: Turning off HOT/Cleanup sometimes - Mailing list pgsql-hackers

From Andres Freund
Subject Re: Turning off HOT/Cleanup sometimes
Date
Msg-id 20140929093111.GB4716@alap3.anarazel.de
Whole thread Raw
In response to Re: Turning off HOT/Cleanup sometimes  (Andres Freund <andres@anarazel.de>)
Responses Re: Turning off HOT/Cleanup sometimes  (Andres Freund <andres@anarazel.de>)
List pgsql-hackers
On 2014-09-29 11:13:43 +0200, Andres Freund wrote:
> I doubt it'll be hard to construct a case where it'll show. My first try
> of using a pgbench scale 100, -M prepared, -cj8 with a custom file with
> 1 write and 5 read transaction yielded the following on my laptop:

Hm. On second thought that testcase probably *decreased* the bad effects
of this because pgbench's readonly statements only touch one table...

patched:

Greetings,

Andres Freund

-- Andres Freund                       http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
Services



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