[Bug 111305] `ttm_bo_handle_move_mem` sometimes takes more than 50 ms

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111305

--- Comment #3 from Alex Deucher <alexdeucher at gmail.com> ---
(In reply to Paul Menzel from comment #2)
> 
> Just to clarify, the VRAM on the external graphics device is powered off,
> correct?

Correct.

> 
> Are there any tools to analyze these delays?

I guess profiling the relevant functions in ttm.  See if we are waiting on
pages, etc.

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