From: Jim C. Nasby <jnasby@pervasive.com>
To: Javier Somoza <jsomoza@pandasoftware.es>
Cc: Bruce Momjian <pgman@candle.pha.pa.us>
Cc: Tino Wildenhain <tino@wildenhain.de>
Cc: pgsql-performance@postgresql.org
Subject: Re: fsync and battery-backed caches
Date: Tue, 28 Feb 2006 11:23:34 -0600
Message-ID: <20060228172334.GV82012@pervasive.com> (raw)
In-Reply-To: <1141114775.1555.7.camel@pndsoft>
References: <200602280106.k1S16DK16068@candle.pha.pa.us>
<1141114775.1555.7.camel@pndsoft>
Actually, you can't assume that a BBU means you can safely disable
full-page-writes. Depending on the controller, it's still possible to
end up with partially written pages.
BTW, if your mailer makes doing so convenient, it would be nice to trim
down your .signature; note that it's about 3x longer than the email you
actually sent.
On Tue, Feb 28, 2006 at 09:19:36AM +0100, Javier Somoza wrote:
>
> Yeah, i saw it. It says full-page-writes can be disabled
> without problems.
> But i wanted to confirm fsync cannot be disabled although i
> have battery.
>
> Thanks!! :-)
>
>
>
> > We do mention battery-backed cache in our docs:
> >
> > http://www.postgresql.org/docs/8.1/static/wal.html
> >
> > If it is unclear, please let us know.
>
> Javier Somoza
> Oficina de Direcci?n Estrat?gica
> mailto:jsomoza@pandasoftware.es
>
> Panda Software
> Buenos Aires, 12
> 48001 BILBAO - ESPA?A
> Tel?fono: 902 24 365 4
> Fax: 94 424 46 97
> http://www.pandasoftware.es
> Panda Software, una de las principales compa??as desarrolladoras de
> soluciones de protecci?n contra virus e intrusos, presenta su nueva
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>
>
>
>
>
>
>
>
>
--
Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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To: pgsql-performance@postgresql.org
Cc: jnasby@pervasive.com, jsomoza@pandasoftware.es, pgman@candle.pha.pa.us, tino@wildenhain.de
Subject: Re: fsync and battery-backed caches
In-Reply-To: <20060228172334.GV82012@pervasive.com>
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