From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============0518941875271748010==" MIME-Version: 1.0 From: Peter F. Patel-Schneider Subject: [Powertop] powertop putting far too much blame on wifi Date: Mon, 30 Dec 2013 09:36:08 -0800 Message-ID: <52C1AF08.8000602@gmail.com> To: powertop@lists.01.org List-ID: --===============0518941875271748010== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Hi: I just got a Lenovo Yoga 2 Pro, and I'mrunning Fedora 20 on it. I'm trying to get power usage down with powertop, but it is producing some = screwy numbers. When I run the machine with wifi on, I get idle consumpti= on = just under 7.2W but almost 5W of that is assigned to the WiFi interface, ev= en = though there is little traffic. When I turn the wifi off, power consumption = only drops to just under 7W. I don't think that there is a phantom WiFi th= at = is still consuming power, so it appears to me that powertop is assigning to= o = much blame to the WiFi interface. Is there away of fixing the assignment of blame here? peter PS: Here are truncated typical powertop outputs, first with wifi on and the= n = with wifi off. 1/ The battery reports a discharge rate of 7.15 W The estimated remaining time is 3 hours, 39 minutes Summary: 251.9 wakeups/second, 4.2 GPU ops/seconds, 0.0 VFS ops/sec and 1.6= % = CPU use Power est. Usage Events/s Category Description 4.82 W 1.2 pkts/s Device Network interface: wlp1s0 (iwlwifi) 1.72 W 10.0% Device Display backlight 131 mW 13.1 ms/s 188.4 Process /usr/lib64/thunderbird/thunderbird 11.7 mW 398.5 =C2=B5s/s 19.9 Process [irq/61-iwlwifi] 2/ The battery reports a discharge rate of 6.92 W The estimated remaining time is 3 hours, 42 minutes Summary: 453.6 wakeups/second, 23.2 GPU ops/seconds, 0.0 VFS ops/sec and 3.= 0% = CPU use Power est. Usage Events/s Category Description 1.47 W 10.0% Device Display backlight 205 mW 14.4 ms/s 197.5 Process /usr/lib64/thunderbird/thunderbird 184 mW 2.2 ms/s 34.1 Process /usr/bin/xfce4-terminal 110 mW 2.4 ms/s 164.4 Interrupt PS/2 Touchpad / Keyboard / Mouse --===============0518941875271748010==--