| From: | Greg Stark <gsstark(at)mit(dot)edu> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | pgsql-performance(at)postgresql(dot)org, pgsql-hackers(at)postgresql(dot)org, Michael Clemmons <glassresistor(at)gmail(dot)com>, Hannu Krosing <hannu(at)2ndquadrant(dot)com>, Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> |
| Subject: | Re: Faster CREATE DATABASE by delaying fsync (was 8.4.1 ubuntu karmic slow createdb) |
| Date: | 2009-12-29 00:27:29 |
| Message-ID: | 407d949e0912281627q2b857c8cn672e3a9b2cb083a0@mail.gmail.com |
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| Lists: | pgsql-hackers pgsql-performance |
On Mon, Dec 28, 2009 at 10:54 PM, Andres Freund <andres(at)anarazel(dot)de> wrote:
> fsync everything in that pass.
> Including the directory - which was not done before and actually might be
> necessary in some cases.
Er. Yes. At least on ext4 this is pretty important. I wish it weren't,
but it doesn't look like we're going to convince the ext4 developers
they're crazy any day soon and it would really suck for a database
created from a template to have files in it go missin.
--
greg
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