Re: Async I/O

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..
>
> Opus
Received on Mon Mar 22 1999 - 13:38:56 CST