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From: Michael Stone <mstone+postgres@mathom.us>
To: pgsql-performance@postgresql.org
Subject: Re: New to PostgreSQL, performance considerations
Date: Mon, 11 Dec 2006 20:37:09 -0500
Message-ID: <20061212013706.GM16692@mathom.us> (raw)
In-Reply-To: <8a0c7af10612111422x6bdcc0c2p7cbfeb5a7b0e0374@mail.gmail.com>
References: <87u002mv49.fsf@wolfe.cbbrowne.com>
	<8a0c7af10612110531sbb019ck259fb16d131fdb50@mail.gmail.com>
	<60psaq5t94.fsf@dba2.int.libertyrms.com>
	<E1GtolA-0008Fk-4R@elasmtp-banded.atl.sa.earthlink.net>
	<20061211173105.GH16692@mathom.us>
	<E1Gtplp-0004Ka-GM@elasmtp-junco.atl.sa.earthlink.net>
	<20061211184726.GI16692@mathom.us>
	<E1GtrB8-0005rw-Iu@elasmtp-kukur.atl.sa.earthlink.net>
	<457DA782.3060506@modgraph-usa.com>
	<8a0c7af10612111422x6bdcc0c2p7cbfeb5a7b0e0374@mail.gmail.com>

On Mon, Dec 11, 2006 at 08:22:42PM -0200, Daniel van Ham Colchete wrote:
>TEST 01: CFLAGS="-O2 -march=i686" fsync=false
>
>tps = 734.948620 (including connections establishing)
>tps = 736.866642 (excluding connections establishing)
[snip]
>TEST 03: CFLAGS="-O2 -march=pentium4" fsync=false
>
>tps = 846.337784 (including connections establishing)
>tps = 849.067017 (excluding connections establishing)

Can anyone else reproduce these results? I'm on similar hardware (2.5GHz 
P4, 1.5G RAM) and my test results are more like this:

(postgresql 8.2.0)

CFLAGS=(default)

tps = 527.300454 (including connections establishing)
tps = 528.898671 (excluding connections establishing)

tps = 517.874347 (including connections establishing)
tps = 519.404970 (excluding connections establishing)

tps = 534.934905 (including connections establishing)
tps = 536.562150 (excluding connections establishing)

CFLAGS=686

tps = 525.179375 (including connections establishing)
tps = 526.801278 (excluding connections establishing)

tps = 557.821136 (including connections establishing)
tps = 559.602414 (excluding connections establishing)

tps = 532.142941 (including connections establishing)
tps = 533.740209 (excluding connections establishing)


CFLAGS=pentium4

tps = 518.869825 (including connections establishing)
tps = 520.394341 (excluding connections establishing)

tps = 537.759982 (including connections establishing)
tps = 539.402547 (excluding connections establishing)

tps = 538.522198 (including connections establishing)
tps = 540.200458 (excluding connections establishing)

Mike Stone



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