Re: Solaris 9 UFS,directIO,async,filesystemio_options
- From: Ray Stell <stellr@xxxxxxxxxx>
- To: Oracle-L@xxxxxxxxxxxxx
- Date: Fri, 4 Mar 2005 09:22:35 -0500
On Fri, Mar 04, 2005 at 02:00:14PM +0800, zhu chao wrote:
> Unless your system is really heavy write, async doesnot help much. I
> perfer directio+multiple dbwr.
Steve Adam's comments on this may be of interest:
http://www.ixora.com.au/q+a/0011/01170259.htm
"It would be better to say that direct I/O benefits all I/O for which
file system buffering is not required. The only Oracle files that
benefit from file system buffering are the control files. So direct I/O
should be used for all other Oracle files."
============================================================
Ray Stell stellr@xxxxxx (540) 231-4109 Tempus fugit 28^D
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