PowerTOP Versionv2.1
Kernel VersionLinux version 3.6.2-1-ARCH (tobias@T-POWA-LX) (gcc version 4.7.2 (GCC) ) #1 SMP PREEMPT Fri Oct 12 23:58:58 CEST 2012
System NameLENOVO 4177CTO ThinkPad T420
CPU Information4x Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz
OS InformationArch Linux

Power Consumption Summary

10.2 wakeups/second, 0.1 GPU ops/second, 0.0 VFS ops/sec, 0.2 GFX wakes/sec and 0.1% CPU use

UsageEvents/sCategoryDescription
3166 rpmDeviceLaptop fan
100.0%DeviceAudio codec hwC0D0: Conexant
0.0% 2.6Timertick_sched_timer
0.0% 1.3Interrupt[4] block(softirq)
0.0% 0.9Timerwatchdog_timer_fn
0.0% 0.6Timerhrtimer_wakeup
0.0% 0.5kWorkdisk_events_workfn
0.0% 0.4Process/usr/bin/urxvtd
0.0% 0.3Processgpg-agent --daemon --write-env-file /home/wgiokas/.gpg-agent-info
0.0% 0.3Process/usr/lib/rtkit/rtkit-daemon

Processor Idle state report

Package  Core  CPU 0 CPU 1
  C0 active 0.0% 0.0%
  POLL 0.0% 0.0 ms 0.0% 0.0 ms
  C1-SNB 0.1% 0.8 ms 1.3% 22.3 ms
C2 (pc2) 0.0%  
C3 (pc3) 0.0% C3 (cc3) 0.0% C3-SNB 0.0% 0.8 ms 0.0% 0.0 ms
C6 (pc6) 0.0% C6 (cc6) 0.0% C6-SNB 0.0% 0.5 ms 0.0% 0.0 ms
C7 (pc7) 0.0% C7 (cc7) 98.5% C7-SNB 99.8% 212.4 ms 98.7% 616.7 ms
   Core  CPU 2 CPU 3
   C0 active 0.0% 0.0%
   POLL 0.0% 0.0 ms 0.0% 0.0 ms
   C1-SNB 0.0% 0.3 ms 1.0% 20.7 ms
   
  C3 (cc3) 0.0% C3-SNB 1.0% 34.1 ms 0.0% 0.0 ms
  C6 (cc6) 0.0% C6-SNB 0.0% 0.0 ms 0.0% 0.0 ms
  C7 (cc7) 98.9% C7-SNB 98.9% 380.6 ms 99.0% 494.9 ms
   GPU  
   
  Active100.0% 
  RC6 0.0% 
  RC6p 0.0% 
  RC6pp 0.0% 
   
   

Processor frequency report

Package  Core  CPU 0 CPU 1
  Actual2.5 GHz2.5 GHz
Turbo Mode 0.0%  Turbo Mode 0.0%  Turbo Mode 0.0% 0.0%
2.50 GHz 0.0%  2.50 GHz 0.0%  2.50 GHz 0.0% 0.0%
2.21 GHz 0.0%  2.21 GHz 0.0%  2.21 GHz 0.0% 0.0%
2.00 GHz 0.0%  2.00 GHz 0.0%  2.00 GHz 0.0% 0.0%
1.80 GHz 0.0%  1.80 GHz 0.0%  1.80 GHz 0.0% 0.0%
1.60 GHz 0.0%  1.60 GHz 0.0%  1.60 GHz 0.0% 0.0%
1400 MHz 0.0%  1400 MHz 0.0%  1400 MHz 0.0% 0.0%
1200 MHz 0.0%  1200 MHz 0.0%  1200 MHz 0.0% 0.0%
1000 MHz 0.0%  1000 MHz 0.0%  1000 MHz 0.0% 0.0%
800 MHz 0.0%   800 MHz 0.0%   800 MHz 0.0% 0.0%
Idle 100.0%  Idle 100.0%  Idle 100.0% 100.0%
   Core  CPU 2 CPU 3
   Actual2.5 GHz2.5 GHz
  Turbo Mode 0.0%  Turbo Mode 0.0% 0.0%
  2.50 GHz 0.0%  2.50 GHz 0.0% 0.0%
  2.21 GHz 0.0%  2.21 GHz 0.0% 0.0%
  2.00 GHz 0.0%  2.00 GHz 0.0% 0.0%
  1.80 GHz 0.0%  1.80 GHz 0.0% 0.0%
  1.60 GHz 0.0%  1.60 GHz 0.0% 0.0%
  1400 MHz 0.0%  1400 MHz 0.0% 0.0%
  1200 MHz 0.0%  1200 MHz 0.0% 0.0%
  1000 MHz 0.0%  1000 MHz 0.0% 0.0%
   800 MHz 0.0%   800 MHz 0.0% 0.0%
  Idle 100.0%  Idle 100.0% 100.0%

Overview of Software Power Consumers

UsageWakeups/sGPU ops/sDisk IO/sGFX Wakeups/sCategoryDescription
8.9 us/s 2.6Timertick_sched_timer
9.9 us/s 1.3Interrupt[4] block(softirq)
3.5 us/s 0.9Timerwatchdog_timer_fn
3.4 us/s 0.6Timerhrtimer_wakeup
0.0 us/s 0.5kWorkdisk_events_workfn
13.8 us/s 0.3 0.1 0.1Process/usr/bin/urxvtd
8.2 us/s 0.3Processgpg-agent --daemon --write-env-file /home/wgiokas/.gpg-agent-info
4.1 us/s 0.3Process/usr/lib/rtkit/rtkit-daemon
0.3 us/s 0.3kWorkblk_delay_work
16.0 us/s 0.25Process[flush-8:0]
8.5 us/s 0.25Process/usr/sbin/thinkfan -n -s5 -q
1.2 us/s 0.25Process[watchdog/3]
1.1 us/s 0.25Process[watchdog/2]
1.1 us/s 0.25Process[watchdog/0]
1.0 us/s 0.25Process[watchdog/1]
3.9 us/s 0.15 0.1 0.1Processi3
0.6 us/s 0.20Timersched_rt_period_timer
370.5 us/s 0.05Processpowertop --html=powertop-3.6.2-1-ARCH.html
4.3 us/s 0.15Process[jbd2/sda4-8]
0.3 us/s 0.15kWorkneigh_periodic_work
85.3 us/s 0.10Process[khugepaged]
6.1 us/s 0.10Process/usr/lib/systemd/systemd-udevd
3.0 us/s 0.10Interrupt[9] acpi
0.1 us/s 0.10kWorki915_gem_retire_work_handler
14.1 us/s 0.05Process/usr/bin/X :0 vt1 -auth /tmp/serverauth.Dam2CVRBjq
12.7 us/s 0.05Processsystemd-udevd
8.2 us/s 0.05Interrupt[7] sched(softirq)
3.7 us/s 0.05Process[jbd2/sda3-8]
3.0 us/s 0.05Process[ksoftirqd/2]
1.3 us/s 0.05Process/usr/lib/GConf/gconfd-2
0.7 us/s 0.05Interrupt[46] i915
0.5 us/s 0.05Process[khungtaskd]
0.1 us/s 0.05kWorkintel_idle_update
0.0 us/s 0.05kWorkscsi_requeue_run_queue
15.7 us/sProcess[kworker/0:1]
13.1 us/sInterrupt[1] timer(softirq)
10.9 us/skWorkdo_dbs_timer
10.6 us/sTimerdelayed_work_timer_fn
10.1 us/sInterrupt[42] SATA controller
8.8 us/sProcess[migration/1]
7.1 us/sProcess[migration/0]
6.8 us/sProcess[migration/3]
5.6 us/sProcess[migration/2]
5.4 us/sProcess[kworker/2:1]
4.6 us/sTimerclocksource_watchdog
3.6 us/sInterrupt[9] RCU(softirq)
3.3 us/skWorkvmstat_update
3.1 us/sProcess[kworker/3:1]
2.9 us/sProcess[kworker/1:1]
2.4 us/sProcess[ksoftirqd/0]
1.0 us/sProcess[kworker/0:1H]
0.8 us/sProcess[kworker/u:5]
0.7 us/sTimerprocess_timeout
0.6 us/sTimeri915_hangcheck_elapsed
0.3 us/sProcess[ksoftirqd/1]
0.2 us/sTimercommit_timeout
0.2 us/sTimerwriteout_period
0.1 us/sTimerintel_gpu_idle_timer
0.1 us/sTimeraddrconf_verify

Device Power Report

The battery reports a discharge rate of 21.4 W

UsageDevice name
3166 rpmLaptop fan
100.0%Audio codec hwC0D0: Conexant
0.1%CPU use
0.1 ops/sGPU
100.0%Thinkpad light
1.6%Display backlight
0.0%Display backlight
0.0 pkts/sNetwork interface: wlan0 (iwlwifi)
100.0%PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5
100.0%PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2
100.0%PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller
100.0%PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1
100.0%PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2
100.0%PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4
100.0%PCI Device: Ricoh Co Ltd PCIe SDXC/MMC Host Controller
100.0%PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1
100.0%PCI Device: Intel Corporation QM67 Express Chipset Family LPC Controller
100.0%PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller
100.0%PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller
100.0%PCI Device: Intel Corporation Centrino Wireless-N 1000 [Condor Peak]
100.0%PCI Device: Intel Corporation 82579LM Gigabit Network Connection
100.0%PCI Device: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller
100.0%Radio device: btusb
100.0%Radio device: iwlwifi
100.0%Radio device: thinkpad_acpi
100.0%USB device: Broadcom Bluetooth Device (Broadcom Corp)
100.0%USB device: EHCI Host Controller
100.0%USB device: usb-device-8087-0024
0.0 pkts/sNetwork interface: eth0 (e1000e)
0.0%USB device: Integrated Camera (Chicony Electronics Co., Ltd.)
0.0%USB device: EHCI Host Controller
0.0%USB device: usb-device-8087-0024

Process device activity

ProcessDevice
systemd/dev/autofs
/dev/kmsg
systemd-journal/dev/kmsg
/dev/kmsg
systemd-logind/dev/input/event1
/dev/input/event13
/dev/input/event2
/dev/input/event3
/dev/input/event5
X/dev/dri/card0
/dev/input/event0
/dev/input/event11
/dev/input/event12
/dev/input/event13
/dev/input/event14
/dev/input/event2
/dev/input/event3
/dev/input/event5
/dev/vga_arbiter
pulseaudio/dev/snd/controlC0
/dev/snd/controlC0
/dev/snd/controlC0

Software Settings in need of Tuning

Wireless Power Saving for interface wlan0iw dev wlan0 set power_save off
Enable SATA link power management for /dev/sdaecho 'min_power' > '/sys/class/scsi_host/host0/link_power_management_policy';
NMI watchdog should be turned offecho '0' > '/proc/sys/kernel/nmi_watchdog';
VM writeback timeoutecho '1500' > '/proc/sys/vm/dirty_writeback_centisecs';
Enable Audio codec power managementecho '1' > '/sys/module/snd_hda_intel/parameters/power_save';
Autosuspend for USB device Broadcom Bluetooth Device [Broadcom Corp]echo 'auto' > '/sys/bus/usb/devices/1-1.4/power/control';
Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5echo 'auto' > '/sys/bus/pci/devices/0000:00:1c.4/power/control';
Runtime PM for PCI Device Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controllerecho 'auto' > '/sys/bus/pci/devices/0000:00:02.0/power/control';
Runtime PM for PCI Device Intel Corporation 82579LM Gigabit Network Connectionecho 'auto' > '/sys/bus/pci/devices/0000:00:19.0/power/control';
Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2echo 'auto' > '/sys/bus/pci/devices/0000:00:1a.0/power/control';
Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controllerecho 'auto' > '/sys/bus/pci/devices/0000:00:1b.0/power/control';
Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2echo 'auto' > '/sys/bus/pci/devices/0000:00:1c.1/power/control';
Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4echo 'auto' > '/sys/bus/pci/devices/0000:00:1c.3/power/control';
Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1echo 'auto' > '/sys/bus/pci/devices/0000:00:1d.0/power/control';
Runtime PM for PCI Device Intel Corporation QM67 Express Chipset Family LPC Controllerecho 'auto' > '/sys/bus/pci/devices/0000:00:1f.0/power/control';
Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controllerecho 'auto' > '/sys/bus/pci/devices/0000:00:1f.2/power/control';
Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controllerecho 'auto' > '/sys/bus/pci/devices/0000:00:1f.3/power/control';
Runtime PM for PCI Device Intel Corporation Centrino Wireless-N 1000 [Condor Peak]echo 'auto' > '/sys/bus/pci/devices/0000:03:00.0/power/control';
Runtime PM for PCI Device Ricoh Co Ltd PCIe SDXC/MMC Host Controllerecho 'auto' > '/sys/bus/pci/devices/0000:0d:00.0/power/control';
Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1echo 'auto' > '/sys/bus/pci/devices/0000:00:1c.0/power/control';
Wake-on-lan status for device eth0ethtool -s eth0 wol d;

Untunable Software Issues

PCI Device Intel Corporation 2nd Generation Core Processor Family DRAM Controller has no runtime power management
PCI Device Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 has no runtime power management

Optimal Tuned Software Settings

Bluetooth device interface status
Autosuspend for USB device Integrated Camera [Chicony Electronics Co., Ltd.]
Autosuspend for USB device EHCI Host Controller [usb1]
Autosuspend for USB device EHCI Host Controller [usb2]
Autosuspend for unknown USB device 1-1 (8087:0024)
Autosuspend for unknown USB device 2-1 (8087:0024)
Wake-on-lan status for device wlan0
Using 'ondemand' cpufreq governor