Messages in this thread | | | Date | Tue, 19 Aug 2008 12:26:33 +0200 | From | Ingo Molnar <> | Subject | Re: AGP and PAT (induced?) problem (on AMD family 6) |
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* 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
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