Peter Gordon wrote:
On Sat, 2005-12-31 at 12:15 -0600, Les Mikesell wrote:
Writes
also always go through cache and sensible operating systems
will sort the write-back into seek order to avoid threshing
the head around in the process. So, if you think you have
a speed problem caused by your disk, the quick fix is normally
to add more RAM.
It iss interesting to note, also, that Ext3's default "ordered" data
writing mode does precisely this, from what I've read. It first
commits the metadata transactions to the journal, then flushes the
data to the disk in large blocks of writes, then commits the journal
transactions to the disk.
Extents-based and delayed write allocation (for on-disk contiguity of
file data) are also being worked on (though, due to possible on-disk
changes of the filesystem format, this could end up becoming "ext4" or
similar). Please see the following page for more information:
<http://ext2.sourceforge.net/2005-ols/paper-html/node18.html>
Thanks for the link Peter, I found the reading interesting. The
information clears up some questions if the fragmentation problem and
dealing with large files is being addressed. It seems that work is ongoing.
Jim
--
A journey of a thousand miles begins with a cash advance.
