<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [snb regression] retuned rc6 values cause power regression" href="https://bugs.freedesktop.org/show_bug.cgi?id=68807#c2">Comment # 2</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [snb regression] retuned rc6 values cause power regression" href="https://bugs.freedesktop.org/show_bug.cgi?id=68807">bug 68807</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>So if you apply <a href="http://cgit.freedesktop.org/~ickle/linux-2.6/commit/?h=perf">http://cgit.freedesktop.org/~ickle/linux-2.6/commit/?h=perf</a> (and build with i915.ko builtin), use xf86-video-intel-2.15+ with SNA, and the lastest checkout of intel-gpu-tools, you get not only a new set of *rps* tweaks but also intel-gpu-overlay to show realtime GPU usage and power consumption. I'd be interested in seeing how the rps tweaks interact with your system (for libva, I can only imagine things get worse). [Not yet integrated into intel-gpu-tools is the ability to record a power usage profile for later analysis - it should be possible through perf, but I haven't finished checking to make sure it works.]</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>