[NTLUG:Discuss] Disk I/O timings.

[Rev. wRy]

Dan Carlson wrote:

 
> If you haven't already done so, use hdparm to optimize your drives
> performance by enabling 32-bit I/O (-c1) and DMA (-d1), if your controllers
> and drives support them.  I've noticed that many distributions either do
> nothing in this regard, or they don't get it right, so it's well worth
> looking into yourself.  You can use the -X option to force a drive into a
> particular DMA mode.


Keywords being "if your controllers and drives support them".  hdparm is a

great tool, but it *can* screw up your partitions in a big way (like 
corrupting inodes, system lockups, etc).

http://www.oreillynet.com/pub/a/272

http://www.linuxjournal.com/article.php?sid=5308


are links to two decent articles about the magic that is hdparm. :)


> Dan Carlson

Ry
(who had big prollems with an older ALI chipset and hdparm)