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Re: performance on new linux box

From: Ryan Wexler <ryan(at)iridiumsuite(dot)com>
To: Jochen Erwied <jochen(at)pgsql-performance(dot)erwied(dot)eu>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: performance on new linux box
Date: 2010-07-08 19:37:58
Message-ID: AANLkTimx5Ug2iAQLv3l5scscART_6fm-wCl10k1nWyti@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-performance
On Thu, Jul 8, 2010 at 12:32 PM, Jochen Erwied <
jochen(at)pgsql-performance(dot)erwied(dot)eu> wrote:

> Thursday, July 8, 2010, 9:18:20 PM you wrote:
>
> > However, I just verified with the hosting company that BBU is off on the
> > raid controller.  I am trying to find out my options, turn it on,
> different
> > card, etc...
>
> Turning it on requires the external BBU to be installed, so even if a 9650
> has BBU support, it requires the hardware on a pluggable card.
>
> And even If the BBU is present, it requires to pass the selftest once until
> you are able to turn on write caching.
>
>
> --
> Jochen Erwied     |   home: jochen(at)erwied(dot)eu     +49-208-38800-18, FAX:
> -19
> Sauerbruchstr. 17 |   work: joe(at)mbs-software(dot)de  +49-2151-7294-24, FAX:
> -50
> D-45470 Muelheim  | mobile: jochen(dot)erwied(at)vodafone(dot)de
> +49-173-5404164
>
>
One thing I don't understand is why BBU will result in a huge performance
gain.  I thought BBU was all about power failures?

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Subject: Re: performance on new linux box
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