lkml.org 
[lkml]   [2008]   [Aug]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: AGP and PAT (induced?) problem (on AMD family 6)

* Rene Herman <rene.herman@keyaccess.nl> wrote:

> On 15-08-08 17:24, Rene Herman wrote:
>
>> On 15-08-08 16:22, Ingo Molnar wrote:
>>
>>> (more people Cc:-ed)
>>
>> Thank you. Additional information at http://lkml.org/lkml/2008/8/6/449
>>
>>> agreed - +12 seconds wait suggest some rather fundamental breakage.
>>> Did we go back to uncached for some critical display area that makes
>>> X start up (shut down) that slowly? Did we mark the BIOS uncacheable
>>> perhaps, causing X to execute BIOS code very slowly?
>>
>> Quite a lot "uncached-minus" in those lists. I am desperately trying to
>> avoid a clue about mostly anything graphics related so, "I dunno".
>>
>> I haven't just disabled PAT yet (although I was about to just do so)
>> and am available for testing.
>
> <waiting with bated breath>
>
> Additional observation with respect to first,next shutdown:
>
> With Option "AGPSize" "64", and booted with "nopat", X startup (from
> startx<enter> to functional desktop) is approximately 5 seconds,
> shutdown is 1 second as calibration times.
>
> Booted without "nopat", X startup seems to alternate between 10+ and
> 16+ seconds and for shutdown -- the first shutdown after boot takes
> some 14 seconds total, subsequent shutdowns settle at around 5
> seconds.

would it be possible to start up and shut down X in the slow case via
strace, by doing something like this:

strace -f -ttt -TTT -o trace.log startx

and see which system calls (or other activities) took suspiciously long?

Ingo


\
 
 \ /
  Last update: 2008-08-19 12:29    [W:0.138 / U:0.756 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site