On Wed, Aug 08, 2007 at 05:54:57PM -0700, Martin Bligh wrote:
This becomes delayed atime writes. I'm not sure that it's better to
batch up the writes and do them all in one big seeky go, or to trickle
them out as they are done. Best of all is not to do them at all.
Note when talking about saving up atime updates to write out that the
final write is going to be sloooooow. Inodes are typically 128 bytes,
and you may have to do a seek between every one. Currents disks can
do on the order of 100 seeks a second. So do a find on 1000 files and
you've just created 10 seconds of I/O hanging out in memory.