Nouveau - May 2015 - [Bug 89247] [NVE7] short display freeze on xrandr --query

https://bugs.freedesktop.org/show_bug.cgi?id=89247

--- Comment #20 from exi+freedesktop at wthack.de ---
Running xrandr -q in a loop shows the following symbols high in 'perf
top':

62,34%  [kernel]                                 [k] ioread32
13,75%  [kernel]                                 [k] native_read_tsc
12,56%  [kernel]                                 [k] delay_tsc

while nouveau is far down here:
   0,61%  nouveau_drv.so                           [.] 0x0000000000007ab0

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