I'm investigating tweaking my power consumption performance on Ubuntu. When I run Powertop, the output seems strange, and not much like any of the screenshots I see on the web. That might be explained by recent version changes, but one thing seems wrong: the critical "wakeups/second" figure is 0.0.. Can this be right?
Here's the 'Overview' output:
Summary: 0.0 wakeups/second, 0.0 GPU ops/second and 0.0 VFS ops/sec
Usage Events/s Category Description
24.1 ms/s 0.0 Process /usr/lib/nspluginwrapper/i386/linux/npviewer.bin --plugin /usr/lib/flashplugin-
10.8 ms/s 0.0 Process /usr/lib/firefox-7.0.1/plugin-container /var/lib/flashplugin-installer/npwrappe
9.3 ms/s 0.0 Process /usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
7.7 ms/s 0.0 Process powertop
5.2 ms/s 0.0 Process /usr/bin/gnome-shell
3.4 ms/s 0.0 Process /usr/lib/firefox-7.0.1/firefox
2.6 ms/s 0.0 Process gnome-terminal
1.9 ms/s 0.0 Interrupt [47] i915
1.9 ms/s 0.0 Timer hrtimer_wakeup
1.7 ms/s 0.0 Process /usr/lib/udisks/udisks-daemon
[etc, etc]
Idle stats as follows:
Package | Core | CPU 0 CPU 1
POLL 0.0% | POLL 0.0% | POLL 0.0% 0.0 ms 0.0% 0.0 ms
C1-SNB 0.9% | C1-SNB 1.2% | C1-SNB 1.4% 0.4 ms 1.0% 0.4 ms
C3-SNB 0.5% | C3-SNB 0.7% | C3-SNB 0.8% 0.6 ms 0.6% 0.6 ms
C6-SNB 0.1% | C6-SNB 0.1% | C6-SNB 0.1% 0.6 ms 0.0% 0.8 ms
C7-SNB 96.0% | C7-SNB 94.5% | C7-SNB 93.7% 3.0 ms 95.4% 5.2 ms
| Core | CPU 2 CPU 3
| POLL 0.0% | POLL 0.0% 0.0 ms 0.0% 0.0 ms
| C1-SNB 0.7% | C1-SNB 0.6% 0.5 ms 0.7% 0.4 ms
| C3-SNB 0.3% | C3-SNB 0.2% 0.2 ms 0.4% 0.5 ms
| C6-SNB 0.1% | C6-SNB 0.0% 0.6 ms 0.1% 0.9 ms
| C7-SNB 97.4% | C7-SNB 97.6% 6.3 ms 97.2% 7.1 ms
Frequency stats show 0.0% for everything, and Device stats seem to have loads at 100%
Usage Device name
5.7% CPU use
86.7% Display backlight
65.1% Display backlight
100.0% USB device: xHCI Host Controller
100.0% USB Device: usb-device-8087-0024
100.0% PCI Device: Intel Corporation Centrino Advanced-N 6230
100.0% Radio device: Sony Notebook Control Driver
100.0% USB device: EHCI Host Controller
100.0% PCI Device: NEC Corporation uPD720200 USB 3.0 Host Controller
100.0% Radio device: iwlagn
100.0% PCI Device: Realtek Semiconductor Co., Ltd. RTS5116 PCI Express Card Reader
100.0% USB device: xHCI Host Controller
[etc, etc]
So, my question is: is something wrong? I assume powertop is mis-reporting some things, right? I'm running on a Sony Vaio, and they're notorious for being difficult hardware for linux...