Re: Please test: ACPI-CA import 20050408

From: Dan Nelson <dnelson_at_allantgroup.com>
Date: Fri, 15 Apr 2005 12:36:27 -0500
In the last episode (Apr 15), Marcel Moolenaar said:
> On Apr 15, 2005, at 9:28 AM, Mark Santcroos wrote:
> >On Fri, Apr 15, 2005 at 09:20:52AM -0700, Marcel Moolenaar wrote:
> >>BTW: Is ACPICA getting slower?
> >
> > Might be. I don't have numbers on that. I guess we're still
> > focusing on functionality and not so much on speed. Do you have a
> > concrete area where you think we are loosing performance?
> 
> No, not yet. It's just that there are 2 "dead" spots in the booting
> process of the plutos we have in the cluster and these "dead" spots
> appeared to be longer. I think there's a lot of AML interpretation
> going on during that time, but I might be wrong.

What I have personally seen is a long delay in bus_alloc_resource() on
some older Dell machines (desktop and laptop, both under 500Mhz).  If I
apply the attached patch, I see between 15 and 20 rows of identical
output, and each call to b_a_r takes a noticeable fraction of a second
(i.e. the cursor spends most of its time after an IRQ, not after a 'y'
or 'n'.) The delays probably add 45 seconds total to the boot time.

Newer systems will just generate 4 or 5 lines total for the entire boot
process.

-- 
	Dan Nelson
	dnelson_at_allantgroup.com

Received on Fri Apr 15 2005 - 15:36:30 UTC

This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:38:32 UTC