Re: IDE-DMA strangeness (another one)

Brandon S. Allbery KF8NH (
Tue, 01 Dec 1998 18:38:57 -0500

In message <Pine.LNX.3.96.981201142123.178A-100000@mirkwood.dummy.home>, Rik
n Riel writes:
| I've just moved my IDE disks around, taking out an old
| disk and moving my new 6.4GB disk from hdd to hda.
| With this move I saw in improvement (hdparm -t) from 3
| to 8.4 (!) MB/second... Now I wonder what kind of bug
| in the Linux I/O subsystem could hold performance back
| _that_ badly.

It might not be Linux's fault at all; ISTR that sometimes two IDE drives in
a master-slave relationship don't work well together and you see that kind
of slowdown as a result.

brandon s. allbery	[os/2][linux][solaris][japh]
system administrator	     [WAY too many hats]
carnegie mellon / electrical and computer engineering			 KF8NH
			  Kiss my bits, Billy-boy.

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to Please read the FAQ at