Re: Concurrent i/o

Matthias Hoys wrote:
>
> Yes we already use async i/o.

No, I meant concurrent I/O = direct + async I/O (the whole stripped of the inode locking overhead).

> Regarding your configuration : do you use it for 10g ? What's the block size
> of your database and your filesystems ? (I think they must be the same when
> using cio). Are your online redo log files using the same filesystems ?
>

Maximum block size for the filesystem is 4K but the database can use a different block size like for raw devices since you are going with direct I/O.

The redolog are on different devices and filesystems (of 512 byte block size).

--
Fabrizio Magni

fabrizio.magni_at_mycontinent.com

replace mycontinent with europe