[Bug 105728] radeon_init takes longer than a few seconds

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105728

Paul Menzel <pmenzel+bugs.freedesktop at molgen.mpg.de> changed:

           What    |Removed                     |Added
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                 CC|                            |pmenzel+bugs.freedesktop at mo
                   |                            |lgen.mpg.de

--- Comment #1 from Paul Menzel <pmenzel+bugs.freedesktop at molgen.mpg.de> ---
Created attachment 138334
  --> https://bugs.freedesktop.org/attachment.cgi?id=138334&action=edit
Screenshot from HTML output of `bootgraph.py`

`bootgraph.py` [1][2] gives the result below.

> radeon_init: start=14003.930, end=16336.770, length(w/o overhead)=2278.062 ms, return=0

Most of the time is spent in `local_pci_probe (2322.816 ms @ 14.013451)`.

Set it up, using `sudo ./bootgraph.py -f -fstat -maxdepth 10 -manual` to see
what to add to `/boot/grub/grub.cfg`. Then reboot, and execute `sudo
./bootgraph.py -f -fstat -maxdepth 10`.

If your system is powerful enough, you can use a higher maximum depth. I didn’t
get around how `-cgfilter` works to get smaller HTML files.

[1] https://01.org/suspendresume
[2] https://github.com/01org/pm-graph

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