| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Jaime Casanova <jcasanov(at)systemguards(dot)com(dot)ec> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: XLogInsert |
| Date: | 2009-12-10 20:58:55 |
| Message-ID: | 20091210205855.GP15554@alvh.no-ip.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Jaime Casanova escribió:
> On Wed, Dec 9, 2009 at 9:39 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> > so I'd like some independent confirmation that it does.
> >
>
> what kind of tests could show that? or simply running pgbench several
> times for 15 minutes each run could show any benefit?
Isn't the supposed performance improvement in this patch linked strongly
to backup blocks? If that's really the case, I think it would show more
prominently if you had very frequent checkpoints.
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.
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