[Nouveau] [Bug 37922] NV86: too high power usage.

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat Jul 30 14:18:52 PDT 2011


https://bugs.freedesktop.org/show_bug.cgi?id=37922

--- Comment #12 from Martin Peres <martin.peres at ensi-bourges.fr> 2011-07-30 14:18:52 PDT ---
Created an attachment (id=49752)
 View: https://bugs.freedesktop.org/attachment.cgi?id=49752
 Review: https://bugs.freedesktop.org/review?bug=37922&attachment=49752

Enable xfer only when we need it to save power

drm/nv50/ctxprog: enable xfer only when we need it to save power

This patch adds instructions to ctxprog and by doing, impact context-switching
performance.
My testcase showed a 1% performance cost using glxgears that is a
context-switch bound application.

Please test and report bugs/performance/power/other.

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