Re: How to enable DMA at boot time
"Clive" == Clive Standbridge <firstname.lastname@example.org> writes:
Clive> On Wed 27 Nov 2002 14:09:12 +0000(-0600), Shyamal Prasad
>> Personally, I use a script. I installed the hwtools package and
>> edited /etc/init.d/hwtools to do the right hdparm commands.
Clive> Okay, that approach works for me. It's also cut my boot
Clive> time (LILO prompt to GDM prompt) from 83s to 72s.
Hmmmm...that is a truly interesting measure. Since I rarely boot my
machine I've never looked at DMA as a way of speeding up the boot
sequence. Cool. I feel like I've learned a whole new view of things :-)
Clive> I'm still curious about the kernel parameter
Clive> approach. Since the hwtools script runs fairly late in the
Clive> boot sequence, I guess that a more dramatic reduction in
Clive> boot time should be possible. I'll return to that on
Clive> another day.
I'm curious now: how many seconds to when your root FS is mounted?
That would determine the upper bound on the improvement. Is most of
the time spent building module dependencies?