[Ocfs-users] Follow up on async I/O question

[Wim Coekaerts]

indeed, 1mb on full scans etc.
and on create datafile

On Wed, May 26, 2004 at 08:42:05AM -0700, Kevin Closson wrote:
> 
> Sunil Mushran wrote:
> >And as that gets into reading debugocfs outputs, the user has to make
> the determination, if the effort is worth the gain in performance. Why
> only logfiles? Well, because Oracle performs large ios only to the
> logfiles. The ios to be datafiles are in smaller chunks. Hope this
> helps. Sunil 
> 
> 
> I'd like to point out a small mistake in this post.  Oracle most
> certainly performs large IOs to more
> than just logfiles.  Parallel Query and normal foreground processes
> alike perform multiblock IO.
> They are known as direct path read and write, scattered read and others
> and are driven by full scans,
> index range scans, foreground temp segment IO, recovery and so on.
> 
> 
> 
> Kevin Closson
> Chief Architect, Database Solutions
> PolyServe, Inc

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