On Wed, 24 Apr 1996 08:26:20 PDT, Marty Leisner
<leisner@sdsp.mc.xerox.com> said:
>> The ATA (IDE) specs do not permit overlapped disk transfers within
>> a single interface. But, as already noted, requests to disks on
>> separate interfaces can be overlapped. Linux has done this since
>> kernel revision 1.1.76 or so.
> So it would make sense to configure two disks as /dev/hda and
> /dev/hdc, instead of
> /dev/hda and /dev/hdb?
Yes, much better. It probably won't make much difference for writes,
but it will certainly allow you to submit multiple reads in parallel
to the two devices. The actual improvement will depend very much on
how you have split home/binaries/swap over the two disks, of course.
Cheers,
Stephen.
-- Stephen Tweedie <sct@dcs.ed.ac.uk> Department of Computer Science, Edinburgh University, Scotland.