Re: raw vs. file - any numbers

From: <davey64_at_my-dejanews.com>
Date: Wed, 28 Apr 1999 17:56:10 GMT
Message-ID: <7g7i3o$hei$1@nnrp1.dejanews.com>

Typically, with todays high speed i/o subsystems, one sees about a %5 - %12 increase with raw devices files. It used to be Oracle stated increases of %10 - %15 until faster and cheaper memory and disk drives became readily available.

If you chose to use raw devices, using them on just control files and redo logs.

In article <7g73a3$2no$1_at_nnrp1.dejanews.com>, johnbishop_at_atl.mediaone.net wrote:
> Does anyone have any numbers that they can share regarding the perfomance
> increases of raw vs file. I've found that on EMC and other disk farms, raw
> makes no difference.
>
> However, now I'm working on IBM SSA devices. I want to know if the difference
> is significant without spending a lot of time measuring, calculating,
> formatting numbers...
>
> Thanks,
>
> JB
>
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-----------== Posted via Deja News, The Discussion Network ==---------- http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own Received on Wed Apr 28 1999 - 12:56:10 CDT