Matthew Dillon wrote:
:It does boot with DMA turned on, unless I am missing something? The
:WDMA2 drive is the old CD drive, the UDMA33 drive is the hard disk. :-)
Yes, that is so... but I'm not entirely sure that it actually uses
those settings when you have a configured slave without a master.
The dd command you ran isn't really a good test. Because you didn't
specify a block size, dd will use 512 bytes. Needless to say 512 byte
transfers from the hard drive are going to be cpu-bound and most of the
overhead is going to be in command setup and tear down. Try 32K
transfers:
dd if=/dev/adX of=/dev/null bs=32k
It should be < 1%.
-Matt
Matthew Dillon
<[EMAIL PROTECTED]>
I did 16k aswell, and yes it was much lower on both OS's. I figured you
wanted a 'worst-case' sorta thing is all :P Oh, and the whole mess with
the hard disk set up was very temporary, I was just too lazy to mess
about changing jumpers around really.
Is the interrupt issue some sort of accounting stuff in the kernel like
Joerg said? If so, is that debugging info of sorts which may possibly be
removed / optional in future releases?
