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Re: DB File Sequential Read Waits

From: Niall Litchfield <niall.litchfield_at_dial.pipex.com>
Date: Thu, 1 Jan 2004 16:31:44 -0000
Message-ID: <3ff44b6d$0$18031$cc9e4d1f@news.dial.pipex.com>


"rjpfal" <ralbertson_at_comcast.net> wrote in message news:2932a99f.0312311154.7117ef9b_at_posting.google.com...

>

> Also out of curiosity I ran same test but against all 8 CPU's rather
> than a dedicated 2. What is of interest is that the total elapsed time
> was greater when using all 8 rather than 2:

This may well be the case if, as we all seem to be agreeing you are experiencing IO contention as the limiting factor. Increasing the number of processes that request IO from a saturated disk will not speed things up :(

--
Niall Litchfield
Oracle DBA
Audit Commission UK
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Received on Thu Jan 01 2004 - 10:31:44 CST

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