| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: PG 10 release notes |
| Date: | 2017-04-25 17:30:36 |
| Message-ID: | 20170425173036.GV7513@momjian.us |
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| Thread: | |
| Lists: | pgsql-hackers |
On Tue, Apr 25, 2017 at 10:00:52AM -0700, Andres Freund wrote:
> at this point, you can see, we've squarely left O(N) country, and
> entered the vast O(N^2) waste.
>
> 10 10 9ms
> 10 100 22ms
> 10 1000 162ms
> 10 10000 1497ms
> 10 100000 17260ms
> 10 200000 39275ms
>
> Here we roughly stay in O(N).
>
> (there's some other suboptimal behaviour in smgrclose(); but that's for
> another day)
OK, I got it now. :-) Here is the new item:
Improve table creation speed in sessions that reference many
relations (Aleksander Alekseev)
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ As you are, so once was I. As I am, so you will be. +
+ Ancient Roman grave inscription +
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