| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Last gasp |
| Date: | 2012-04-05 18:40:17 |
| Message-ID: | CA+TgmoZUbn8Wif1AjqE+tfbQa7swSE2vuQr-+qs8u50O=BdXJA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Apr 5, 2012 at 2:37 PM, Alvaro Herrera
<alvherre(at)commandprompt(dot)com> wrote:
> The FK locking patch isn't on this list; however, I'm hijacking this
> thread to say that some benchmarking runs we tried weren't all that
> great, showing 9% performance degradation on stock pgbench -- i.e. a
> large hit that will harm everybody even if they are not using FKs at
> all. I'm thus setting the patch returned with feedback, which is sure
> to make several hackers happy and tons of users unhappy.
Ouch! That's a real bummer. It makes me glad that you tested it, but
I can't say I'm happy about the outcome. Did you get in any insight
into where the regression is coming from?
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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