the 'Performance und Tuning Guide' describes:
FILESYSTEMIO_OPTIONS Initialization Parameter
Use asynchronous I/O when possible to avoid bottlenecks.
ASYNCH: enable asynchronous I/O on file system files,
which has no timing requirement for transmission
I would use:
in the pfile/spfile.
Does this mean ext3 with option 'noatime' ?
Which file systems are supported in Linux ext2, ext3, ext4?
This time i'm using openSUSE 11.x and 12.x on SATA disks without LVM and ext4,
but i would like to change to Oralce Linux.
What's the goal? Seeking the magical "Go Fast" button?
Unless specific performance goals are targeted, and method(s) to test and verify those goals are/are not being met the AIO bang might not even be noticable.
Make one change, measure, and compare results. Not two, nor twenty, changes in host + instance parameters then go back and figure out which change broke, harmed, or improved performance in the tuning efforts.