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

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Aug 9 00:05:08 UTC 2019


--- Comment #2 from Paul Menzel <pmenzel+bugs.freedesktop.org at molgen.mpg.de> ---
(In reply to Alex Deucher from comment #1)
> The contents of vram have to be moved to system memory on suspend since vram
> is powered off.  Depending on general memory pressure at suspend time it may
> take a while to get the contexts of vram into system ram.

Just to clarify, the VRAM on the external graphics device is powered off,

Are there any tools to analyze these delays?

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