Re: Async I/O

Hi David, and thanks for responding ....

So it doesn't work at all or would I get some sorta error message or it (as in the next reply) a matter of ensuring data integrity and that could be a potential problem. So far, I've had no problem but then... There's no way we're going to 11.0 anytime soon I doubt. So you recommend turning it off period then? Will I see some preformance degredation in disk writes or nothing as it doesn't really work?

thanks again....

David Lai wrote:
>
> JFS is the name for VERITAS File System (VxFS) on HP. Indeed it
> does not support async I/O on 10.20. So you should not be using
> async I/O right now. In a few month we are releasing
> the VERITAS Storage Edition for Oracle on 11.0. This product
> includes VxFS 3.3 that allows async I/O on files (with the VERITAS
> Quick I/O driver). As a matter of fact, these Quick I/O files behave
> and perform just like raw devices. On Solaris we have seen over 100%
> performance improvements over traditional cooked files for TPCC
> type workloads. We expect the same on HP as well.
>
> -- David Lai
> VERITAS Software
>
> opus wrote:
>
> > Hello all,
> >
> > I'm running 7.3.4 on HP 10.20 and I've enabled async I/O in the kernel
> > and in the init file. someone in Oracle support said to do that many
> > moons ago even though it says only use async i/o with raw device files.
> > I use JFS files. Now someone else from Oracle support sends me FAQ
> > saying I shouldn't use asyn I/O with JFS but there's no reason as to
> > what can happen if you do. So far been running like this for quite
> > awhile. Any thoughts?
> >
> > I've also been running an Oracle 8.0.3 instance using async i/o (it
> > defaults to that outta the box fer gawd's sake - all ya gotta do is set
> > it up in Unix) for awhile as well.
> >
> > Reply to the newsgroup please, and thanks if anyone knows..
> >
Received on Mon Mar 22 1999 - 15:28:32 CST