* Alan Cox (firstname.lastname@example.org) wrote:
> Second question is what is in your IDE logs. The IDE layer will change
> down speeds when it hits a repeated problem (eg a DMA timeout) so if
> need be will switch back to PIO or to MWDMA.
I have what sounds like a similar problem - assuming it is a problem
with the IDE layer dropping the speed - except mine is with my CD or
DVD drive. They run a lot slower under the 2.4.x kernels than under
2.2.19 (looking at 2-3megs/s under 2.4.x, 5-7megs/s under 2.2.19).
Also when using 2.4.x, the kernel has a habit of disabling DMA and
performance plummets. Yet it is fine with 2.2.19.
Is this a related issue? Is there a fix for this?
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to email@example.com
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sun Sep 30 2001 - 21:01:10 EST