| PowerTOP Version | v2.5 |
| Kernel Version | Linux version 3.12.5-302.fc20.x86_64 (mockbuild@bkernel01.phx2.fedoraproject.org) (gcc version 4.8.2 20131212 (Red Hat 4.8.2-7) (GCC) ) #1 SMP Tue Dec 17 20:42:32 UTC 2013 |
| System Name | LENOVO 4177CTO ThinkPad T420 |
| CPU Information | 4x Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz |
| OS Information | Fedora release 20 (Heisenbug) |
463.0 wakeups/second, 85.0 GPU ops/second, 0.0 VFS ops/sec, 166.7 GFX wakes/sec and 6.8% CPU use
| Power est. | Usage | Events/s | Category | Description |
|---|---|---|---|---|
| 602 mW | 1.3% | 119.2 | Process | kwin |
| 211 mW | 2.0% | 67.9 | Process | /usr/bin/vlc --started-from-file /home/donnie/Videos/Homeland/Homeland.S03E08.HDTV.x264-ChameE.mkv |
| 175 mW | 0.2% | 32.4 | Process | /usr/bin/pulseaudio --start |
| 173 mW | 0.0% | 17.9 | kWork | ieee80211_iface_work |
| 105 mW | 0.7% | 14.6 | Process | /usr/bin/X :0 vt1 -background none -nolisten tcp -seat seat0 -auth /var/run/kdm/A:0-Lf14Sb |
| 72.0 mW | 0.0% | 5.3 | kWork | ieee80211_sta_monitor_work |
| 38.7 mW | 1.0% | 19.4 | Process | /usr/bin/plasma-desktop |
| 10.7 mW | 0.3% | 28.5 | Process | /usr/bin/konsole |
| 8.41 mW | 0.2% | 52.2 | Interrupt | PS/2 Touchpad / Keyboard / Mouse |
| 7.46 mW | 0.2% | 1.5 | Process | plasma-desktop |
| 6.09 mW | 0.2% | 42.4 | Interrupt | [44] i915 |
| Package 0 | Core 0 | CPU 0 | CPU 1 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| C0 active | 5.1% | 4.0% | |||||||||
| POLL | 0.0% | 1.1 ms | 0.0% | 0.0 ms | |||||||
| C1E-SNB | 0.2% | 0.2 ms | 0.3% | 0.4 ms | |||||||
| C2 (pc2) | 0.0% | ||||||||||
| C3 (pc3) | 0.0% | C3 (cc3) | 3.6% | C3-SNB | 2.6% | 0.6 ms | 0.5% | 0.4 ms | |||
| C6 (pc6) | 0.0% | C6 (cc6) | 0.0% | C6-SNB | 0.0% | 0.1 ms | 0.0% | 0.0 ms | |||
| C7 (pc7) | 0.0% | C7 (cc7) | 85.4% | C7-SNB | 91.5% | 1.2 ms | 95.1% | 2.0 ms | |||
| Core 1 | CPU 2 | CPU 3 | |||||||||
| C0 active | 4.1% | 4.5% | |||||||||
| POLL | 0.0% | 0.0 ms | 0.0% | 0.0 ms | |||||||
| C1E-SNB | 0.3% | 0.2 ms | 0.4% | 0.5 ms | |||||||
| C3 (cc3) | 2.3% | C3-SNB | 1.2% | 0.6 ms | 0.8% | 0.7 ms | |||||
| C6 (cc6) | 0.0% | C6-SNB | 0.0% | 0.0 ms | 0.0% | 0.0 ms | |||||
| C7 (cc7) | 87.4% | C7-SNB | 94.3% | 1.6 ms | 94.0% | 2.1 ms | |||||
| GPU 28977680 | |||||||||||
| Powered On | 100.0% | ||||||||||
| RC6 | 0.0% | ||||||||||
| RC6p | 0.0% | ||||||||||
| RC6pp | 0.0% | ||||||||||
| Package 0 | Core 0 | CPU 0 | CPU 1 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Actual | 3.1 GHz | 3.1 GHz | |||||||
| Idle | 38.7% | Idle | 39.4% | Idle | 40.2% | 98.7% | |||
| 3.40 GHz | 21.9% | 3.40 GHz | 21.5% | 3.40 GHz | 21.0% | 0.8% | |||
| 3.31 GHz | 28.5% | 3.31 GHz | 28.2% | 3.31 GHz | 27.9% | 0.5% | |||
| 3.21 GHz | 6.6% | 3.21 GHz | 6.6% | 3.21 GHz | 6.6% | 0.0% | |||
| 3.10 GHz | 1.7% | 3.10 GHz | 1.7% | 3.10 GHz | 1.7% | 0.0% | |||
| 2.81 GHz | 0.4% | 2.81 GHz | 0.4% | 2.81 GHz | 0.4% | 0.0% | |||
| 2.90 GHz | 1.4% | 2.90 GHz | 1.4% | 2.90 GHz | 1.4% | 0.0% | |||
| 2.71 GHz | 0.1% | 2.71 GHz | 0.1% | 2.71 GHz | 0.1% | 0.0% | |||
| 3.00 GHz | 0.7% | 3.00 GHz | 0.7% | 3.00 GHz | 0.7% | ||||
| 2.60 GHz | 0.2% | 2.60 GHz | 0.2% | 2.60 GHz | 0.2% | ||||
| Core 1 | CPU 2 | CPU 3 | |||||||
| Actual | 3.1 GHz | 3.1 GHz | |||||||
| Idle | 98.3% | Idle | 99.2% | 98.8% | |||||
| 3.40 GHz | 1.0% | 3.40 GHz | 0.4% | 0.8% | |||||
| 3.31 GHz | 0.6% | 3.31 GHz | 0.3% | 0.3% | |||||
| 3.21 GHz | 0.1% | 3.21 GHz | 0.0% | 0.0% | |||||
| 2.90 GHz | 0.0% | 3.00 GHz | 0.0% | 0.0% | |||||
| 3.00 GHz | 0.0% | 3.10 GHz | 0.0% | 0.0% | |||||
| 3.10 GHz | 0.0% | 0.0% | |||||||
| Power est. | Usage | Wakeups/s | GPU ops/s | Disk IO/s | GFX Wakeups/s | Category | Description |
|---|---|---|---|---|---|---|---|
| 602 mW | 13.2 ms/s | 79.1 | 40.1 | 51.6 | Process | kwin | |
| 211 mW | 20.3 ms/s | 58.5 | 9.4 | 26.3 | Process | /usr/bin/vlc --started-from-file /home/donnie/Videos/Homeland/Homeland.S03E08.HDTV.x264-ChameE.mkv | |
| 175 mW | 2.3 ms/s | 20.3 | 12.1 | 31.6 | Process | /usr/bin/pulseaudio --start | |
| 173 mW | 79.6 us/s | 5.3 | 12.6 | kWork | ieee80211_iface_work | ||
| 105 mW | 7.3 ms/s | 9.1 | 5.5 | 18.1 | Process | /usr/bin/X :0 vt1 -background none -nolisten tcp -seat seat0 -auth /var/run/kdm/A:0-Lf14Sb | |
| 72.0 mW | 0.0 us/s | 5.3 | kWork | ieee80211_sta_monitor_work | |||
| 38.7 mW | 9.6 ms/s | 19.4 | 23.9 | Process | /usr/bin/plasma-desktop | ||
| 10.7 mW | 2.7 ms/s | 28.5 | 14.1 | Process | /usr/bin/konsole | ||
| 8.41 mW | 2.1 ms/s | 52.2 | Interrupt | PS/2 Touchpad / Keyboard / Mouse | |||
| 7.46 mW | 1.9 ms/s | 1.5 | Process | plasma-desktop | |||
| 6.09 mW | 1.5 ms/s | 42.4 | Interrupt | [44] i915 | |||
| 6.05 mW | 1.5 ms/s | 3.2 | Process | sh | |||
| 3.22 mW | 0.8 ms/s | 38.9 | Timer | tick_sched_timer | |||
| 2.23 mW | 555.1 us/s | 0.20 | kWork | disk_events_workfn | |||
| 2.19 mW | 544.5 us/s | 4.9 | Process | sensors | |||
| 2.00 mW | 497.1 us/s | 40.3 | Timer | hrtimer_wakeup | |||
| 1.79 mW | 445.6 us/s | 3.9 | Interrupt | [9] acpi | |||
| 1.64 mW | 409.2 us/s | 15.9 | Process | [irq/48-iwlwifi] | |||
| 1.05 mW | 260.1 us/s | Interrupt | [1] timer(softirq) | ||||
| 623 uW | 155.1 us/s | Timer | intel_pstate_timer_func | ||||
| 596 uW | 148.4 us/s | Interrupt | [9] RCU(softirq) | ||||
| 578 uW | 143.8 us/s | 1.1 | 0.9 | Process | kded4 | ||
| 525 uW | 130.7 us/s | 1.0 | Interrupt | [7] sched(softirq) | |||
| 329 uW | 81.8 us/s | 8.7 | Process | [rcu_sched] | |||
| 308 uW | 76.6 us/s | Timer | tpt_trig_timer | ||||
| 292 uW | 72.8 us/s | 1.5 | Process | /usr/libexec/upowerd | |||
| 279 uW | 69.5 us/s | 1.0 | Process | grep | |||
| 274 uW | 68.3 us/s | Process | /bin/dbus-daemon --fork --print-pid 4 --print-address 6 --session | ||||
| 271 uW | 67.5 us/s | 5.5 | Process | /sbin/rngd -f | |||
| 266 uW | 66.1 us/s | 0.25 | 0.1 | Process | /usr/bin/kmix | ||
| 252 uW | 62.7 us/s | 7.4 | Interrupt | [48] iwlwifi | |||
| 251 uW | 62.6 us/s | Process | /bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation | ||||
| 232 uW | 57.8 us/s | Process | [kworker/u16:1] | ||||
| 232 uW | 57.7 us/s | Interrupt | [8] hrtimer(softirq) | ||||
| 213 uW | 53.1 us/s | Process | [kworker/u16:0] | ||||
| 212 uW | 52.7 us/s | 0.20 | Process | /home/donnie/.dropbox-dist/dropbox | |||
| 211 uW | 52.4 us/s | 0.3 | 0.1 | Process | /usr/bin/krunner | ||
| 196 uW | 48.7 us/s | 4.6 | kWork | iwl_bg_run_time_calib_work | |||
| 175 uW | 43.4 us/s | 0.25 | Process | /usr/bin/virtuoso-t +foreground +configfile /tmp/virtuoso_TT1792.ini +wait | |||
| 148 uW | 36.8 us/s | Timer | process_timeout | ||||
| 145 uW | 36.0 us/s | 0.05 | Process | /usr/sbin/irqbalance --foreground | |||
| 134 uW | 33.3 us/s | 0.4 | Process | /usr/sbin/thinkfan | |||
| 122 uW | 30.4 us/s | 0.25 | Process | ksmserver | |||
| 102 uW | 25.3 us/s | 0.20 | Process | /usr/sbin/NetworkManager --no-daemon | |||
| 0 mW | 22.2 us/s | 0.25 | 0.1 | Process | /usr/bin/kactivitymanagerd | ||
| 0 mW | 19.8 us/s | Process | [kworker/0:0] | ||||
| 0 mW | 19.6 us/s | Timer | delayed_work_timer_fn | ||||
| 0 mW | 18.9 us/s | 0.10 | Process | /usr/libexec/mission-control-5 | |||
| 0 mW | 12.5 us/s | 0.10 | Process | /usr/bin/knotify4 | |||
| 0 mW | 12.3 us/s | 0.05 | Process | /usr/bin/nepomukfilewatch | |||
| 0 mW | 11.8 us/s | 0.10 | Process | /usr/bin/kglobalaccel | |||
| 0 mW | 10.8 us/s | kWork | vmstat_update | ||||
| 0 mW | 10.2 us/s | Process | /usr/bin/kuiserver | ||||
| 0 mW | 9.9 us/s | 3.1 | Interrupt | [47] snd_hda_intel | |||
| 0 mW | 9.7 us/s | 0.10 | Process | /usr/bin/nepomukfileindexer | |||
| 0 mW | 9.4 us/s | 0.10 | Process | /usr/bin/nepomukstorage | |||
| 0 mW | 8.6 us/s | 0.15 | Process | /usr/bin/gpg-agent -s --daemon --write-env-file /run/user/1000/.gpg-agent-info | |||
| 0 mW | 8.3 us/s | Process | [migration/1] | ||||
| 0 mW | 7.7 us/s | Process | /usr/libexec/kde4/polkit-kde-authentication-agent-1 | ||||
| 0 mW | 7.6 us/s | 0.10 | Process | /usr/bin/kwalletd | |||
| 0 mW | 7.1 us/s | Process | /usr/bin/klipper | ||||
| 0 mW | 7.0 us/s | 0.10 | Process | /usr/bin/nepomukservicestub nepomuktelepathyservice | |||
| 0 mW | 6.7 us/s | 0.6 | kWork | intel_unpin_work_fn | |||
| 0 mW | 6.0 us/s | 0.10 | Process | [ksoftirqd/2] | |||
| 0 mW | 5.9 us/s | Process | [ksoftirqd/0] | ||||
| 0 mW | 5.9 us/s | 0.05 | Process | [ksoftirqd/1] | |||
| 0 mW | 5.8 us/s | Timer | clocksource_watchdog | ||||
| 0 mW | 5.3 us/s | 0.4 | kWork | pci_pme_list_scan | |||
| 0 mW | 5.1 us/s | 0.10 | Process | /usr/libexec/accounts-daemon | |||
| 0 mW | 4.2 us/s | 0.05 | Process | klauncher --fd=9 | |||
| 0 mW | 3.8 us/s | Interrupt | [4] block(softirq) | ||||
| 0 mW | 3.7 us/s | 0.25 | Interrupt | [43] SATA controller | |||
| 0 mW | 3.4 us/s | 0.15 | Process | /usr/libexec/rtkit-daemon | |||
| 0 mW | 3.3 us/s | Process | [kworker/3:2] | ||||
| 0 mW | 3.2 us/s | Process | [kworker/1:2] | ||||
| 0 mW | 3.0 us/s | 0.3 | kWork | i915_gem_retire_work_handler | |||
| 0 mW | 3.0 us/s | Process | [migration/3] | ||||
| 0 mW | 2.3 us/s | Process | [kworker/2:2] | ||||
| 0 mW | 2.2 us/s | 0.05 | Process | [ksoftirqd/3] | |||
| 0 mW | 1.9 us/s | 0.05 | Process | /usr/sbin/wpa_supplicant -u -f /var/log/wpa_supplicant.log -c /etc/wpa_supplicant/wpa_supplicant.conf -u -f /var/log/wpa_suppli | |||
| 0 mW | 1.7 us/s | Process | [migration/0] | ||||
| 0 mW | 1.7 us/s | Interrupt | [1] i8042 | ||||
| 0 mW | 1.5 us/s | 0.4 | Timer | sched_rt_period_timer | |||
| 0 mW | 1.2 us/s | kWork | __cfg80211_scan_done | ||||
| 0 mW | 0.8 us/s | 0.20 | kWork | mei_timer | |||
| 0 mW | 0.7 us/s | Interrupt | [3] net_rx(softirq) | ||||
| 0 mW | 0.7 us/s | 0.05 | Process | /usr/bin/ssh-agent /etc/X11/xinit/Xclients | |||
| 0 mW | 0.7 us/s | Timer | br_hello_timer_expired | ||||
| 0 mW | 0.6 us/s | kWork | wireless_nlevent_process | ||||
| 0 mW | 0.5 us/s | Timer | inet_frag_secret_rebuild | ||||
| 0 mW | 0.5 us/s | Process | [migration/2] | ||||
| 0 mW | 0.4 us/s | 0.05 | kWork | bdi_writeback_workfn | |||
| 0 mW | 0.4 us/s | Timer | writeout_period | ||||
| 0 mW | 0.4 us/s | kWork | iwl_bg_scan_completed | ||||
| 0 mW | 0.4 us/s | Process | [khugepaged] | ||||
| 0 mW | 0.3 us/s | 0.05 | kWork | neigh_periodic_work | |||
| 0 mW | 0.2 us/s | Timer | fib6_gc_timer_cb | ||||
| 0 mW | 0.2 us/s | kWork | ieee80211_scan_work | ||||
| 0 mW | 0.2 us/s | Timer | ieee80211_sta_timer | ||||
| 0 mW | 0.2 us/s | kWork | console_callback |
The battery reports a discharge rate of 31.1 W
System baseline power is estimated at 15.1 W
| Power est. | Usage | Device name |
|---|---|---|
| 6.97 W | 85.0 ops/s | GPU core |
| 6.68 W | 6.8% | CPU core |
| 1.16 W | 85.0 ops/s | GPU misc |
| 273 mW | 6.8% | CPU misc |
| 0 mW | 4464 rpm | Laptop fan |
| 0 mW | 100.0% | Display backlight |
| 0 mW | 100.0% | Display backlight |
| 0 mW | 100.0% | USB device: usb-device-8087-0024 |
| 0 mW | 100.0% | USB device: EHCI Host Controller |
| 0 mW | 100.0% | USB device: USB Receiver (Logitech) |
| 0 mW | 100.0% | Radio device: iwlwifi |
| 0 mW | 97.7% | Display backlight |
| 0 mW | 59.2% | Audio codec hwC0D0: Conexant (pulseaudio ) |
| 0 mW | 0.2 pkts/s | Network interface: wlp3s0 (iwlwifi) |
| 0 mW | 0.0% | USB device: Integrated Camera (Chicony Electronics Co., Ltd.) |
| 0 mW | 0.0% | USB device: Biometric Coprocessor (UPEK) |
| 0 mW | 0.0% | USB device: EHCI Host Controller |
| 0 mW | 0.0% | Radio device: thinkpad_acpi |
| 0 mW | 0.0% | USB device: usb-device-8087-0024 |
| 100.0% | PCI Device: Ricoh Co Ltd MMC/SD Host Controller | |
| 100.0% | PCI Device: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port | |
| 100.0% | PCI Device: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller | |
| 100.0% | PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 | |
| 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 5 | |
| 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] | |
| 0.0% | PCI Device: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 | |
| 0.0% | PCI Device: Intel Corporation 82579LM Gigabit Network Connection | |
| 0.0% | PCI Device: Intel Corporation 2nd Generation Core Processor Family DRAM Controller | |
| 0.0 pkts/s | Network interface: em1 (e1000e) | |
| 0.0 pkts/s | nic:virbr0-nic | |
| 0.0% | PCI Device: NVIDIA Corporation GF119M [Quadro NVS 4200M] | |
| 0.0 pkts/s | nic:virbr0 | |
| 0.0% | Thinkpad light |
| Process | Device |
|---|---|
| systemd | /dev/autofs |
| systemd-journal | /dev/kmsg |
| /dev/kmsg | |
| alsactl | /dev/snd/controlC0 |
| /dev/snd/controlC4 | |
| bluetoothd | /dev/rfkill |
| rngd | /dev/random |
| systemd-logind | /dev/input/event0 |
| /dev/input/event1 | |
| /dev/input/event14 | |
| /dev/input/event2 | |
| /dev/input/event7 | |
| /dev/input/event8 | |
| mcelog | /dev/mcelog |
| wpa_supplicant | /dev/rfkill |
| X | /dev/dri/card0 |
| /dev/input/event1 | |
| /dev/input/event14 | |
| /dev/input/event15 | |
| /dev/input/event2 | |
| /dev/input/event3 | |
| /dev/input/event4 | |
| /dev/input/event5 | |
| /dev/input/event6 | |
| /dev/input/event7 | |
| /dev/input/event8 | |
| /dev/input/event9 | |
| /dev/vga_arbiter | |
| upowerd | /dev/cpu_dma_latency |
| /dev/hidraw1 | |
| /dev/input/event0 | |
| /dev/network_latency | |
| kwin | /dev/dri/card0 |
| pulseaudio | /dev/snd/controlC0 |
| /dev/snd/controlC0 | |
| /dev/snd/controlC0 |
| Description | Script |
|---|---|
| VM writeback timeout | echo '1500' > '/proc/sys/vm/dirty_writeback_centisecs'; |
| Autosuspend for USB device USB Receiver [Logitech] | echo 'auto' > '/sys/bus/usb/devices/2-1.1/power/control'; |
| Description |
|---|
| NMI watchdog should be turned off |
| Enable SATA link power Managmenet for host0 |
| Enable SATA link power Managmenet for host1 |
| Enable SATA link power Managmenet for host2 |
| Enable SATA link power Managmenet for host3 |
| Enable SATA link power Managmenet for host4 |
| Enable SATA link power Managmenet for host5 |
| Enable Audio codec power management |
| Autosuspend for USB device Integrated Camera [Chicony Electronics Co., Ltd.] |
| Autosuspend for unknown USB device 1-1 (8087:0024) |
| Autosuspend for unknown USB device 2-1 (8087:0024) |
| Autosuspend for USB device Biometric Coprocessor [UPEK] |
| Autosuspend for USB device EHCI Host Controller [usb1] |
| Autosuspend for USB device EHCI Host Controller [usb2] |
| Runtime PM for PCI Device NVIDIA Corporation GF119M [Quadro NVS 4200M] |
| Runtime PM for PCI Device Intel Corporation 2nd Generation Core Processor Family DRAM Controller |
| Runtime PM for PCI Device Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port |
| Runtime PM for PCI Device Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller |
| Runtime PM for PCI Device Intel Corporation 82579LM Gigabit Network Connection |
| Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 |
| Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller |
| Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 |
| Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 |
| Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 |
| Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 |
| Runtime PM for PCI Device Intel Corporation QM67 Express Chipset Family LPC Controller |
| Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller |
| Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller |
| Runtime PM for PCI Device Intel Corporation Centrino Wireless-N 1000 [Condor Peak] |
| Runtime PM for PCI Device Ricoh Co Ltd MMC/SD Host Controller |
| Runtime PM for PCI Device Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 |
| Wake-on-lan status for device virbr0 |
| Wake-on-lan status for device virbr0-nic |
| Wake-on-lan status for device wlp3s0 |
| Wake-on-lan status for device em1 |
| Using 'ondemand' cpufreq governor |