The Linux PowerTOP tool -- please post patches to the mailing list instead of using github pull requests

Related tags

powertop
Overview

PowerTOP

PowerTOP is a Linux* tool used to diagnose issues with power consumption and power management. In addition to being a diagnostic tool, PowerTOP also has an interactive mode you can use to experiment with various power management settings, for cases where the Linux distribution has not enabled those settings.

Build dependencies

PowerTOP is coded in C++. It was written for Linux-based operating systems. GNU* libc (glibc) and Linux pthreads are needed for PowerTOP to function properly. The GNU build system (autoconf, automake, make, libtool), as well as gettext, are required to build PowerTOP.

In addition, PowerTOP requires the following:

  • kernel version => 2.6.38
  • ncurses-devel (required)
  • libnl-devel (required)
  • pciutils-devel (is only required if you have PCI)
  • autoconf-archive (for building)

Example packages to install in Ubuntu*:

sudo apt install libpci-dev libnl-3-dev libnl-genl-3-dev gettext \
libgettextpo-dev autopoint gettext libncurses5-dev libncursesw5-dev libtool-bin \
dh-autoreconf autoconf-archive pkg-config

Building PowerTOP

The autogen.sh script needs to be run only once to generate configure. You need to re-run it only if the build system configuration files (e.g. configure.ac) are modified. The remaining steps are required whenever source files are modified.

To build PowerTOP from the cloned source, use the following commands:

./autogen.sh
./configure
make

Running PowerTOP

The following sections go over basic operation of PowerTOP. This includes kernel configuration options (or kernel patches) needed for full functionality. Run powertop --help to see all options.

Kernel parameters and (optional) patches

PowerTOP needs some kernel config options enabled to function properly. As of linux-3.3.0, these are (the list probably is incomplete):

CONFIG_NO_HZ
CONFIG_HIGH_RES_TIMERS
CONFIG_HPET_TIMER
CONFIG_CPU_FREQ_GOV_ONDEMAND
CONFIG_USB_SUSPEND
CONFIG_SND_AC97_POWER_SAVE
CONFIG_TIMER_STATS
CONFIG_PERF_EVENTS
CONFIG_PERF_COUNTERS
CONFIG_TRACEPOINTS
CONFIG_TRACING
CONFIG_EVENT_POWER_TRACING_DEPRECATED
CONFIG_X86_MSR
ACPI_PROCFS_POWER
CONFIG_DEBUG_FS

Use these configs from linux-3.13.rc1:

CONFIG_POWERCAP
CONFIG_INTEL_RAPL

The patches in the patches/ sub-directory are optional but enable full PowerTOP functionality.

Outputting a report

When PowerTOP is executed as root and without arguments, it runs in interactive mode. In this mode, PowerTOP most resembles top.

For generating reports, or for filing functional bug reports, there are two output modes: CSV and HTML. You can set sample times, the number of iterations, a workload over which to run PowerTOP, and whether to include debug-level output.

For an HTML report, execute PowerTOP with this option:

powertop --html=report.html

This creates a static report.html file, suitable for sharing.

For a CSV report, execute PowerTOP with this option:

powertop --csv=report.csv

This creates a static powertop.csv file, also suitable for sharing.

If you wish to file a functional bug report, generate and share a debug-mode HTML report and share it, using the following command:

powertop --debug --html=report.html

Important Note: As PowerTOP is intended for privileged (root) use, your reports-- especially when run with --debug-- will contain verbose system information. PowerTOP does not sanitize, scrub, or otherwise anonymize its reports. Be mindful of this when sharing reports.

Developers: If you make changes to the HTML reporting code, validate HTML output by using the W3C* Markup Validation Service and the W3C CSS Validation Service:

Calibrating and power numbers

PowerTOP, when running on battery, tracks power consumption and activity on the system. Once there are sufficient measurements, PowerTOP can start to report power estimates for various activities. You can help increase the accuracy of the estimation by running a calibration cycle at least once:

powertop --calibrate

Calibration entails cycling through various display brightness levels (including "off"), USB device activities, and other workloads.

Extech Power Analyzer / Datalogger support

Our analysis teams use the Extech* Power Analyzer/Datalogger (model number 380803). PowerTOP supports this device over the serial cable by passing the device node on the command line using this command:

powertop --extech=/dev/ttyUSB0

(where ttyUSB0 is the devicenode of the serial-to-usb adapter on our system)

Contributing to PowerTOP and getting support

There are numerous ways you and your friends can contribute to PowerTOP. See the CONTRIBUTE.md document for more details. Elevator summary: "fork, and send PRs!".

We have a mailing list: [email protected]:

If you find bugs, you can file an issue-- see CONTRIBUTE.md for further details:

Code from other open source projects

PowerTOP contains some code from other open source projects; we'd like to thank the authors of those projects for their work. Specifically, PowerTOP contains code from

Parse Event Library - Copyright 2009, 2010 Red Hat Inc  Steven Rostedt <[email protected]>
nl80211 userspace tool - Copyright 2007, 2008	Johannes Berg <[email protected]>

Copyright and License

PowerTOP
Copyright (C) 2020  Intel Corporation

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

See COPYING file for a copy of the aforementioned (GPLv2) license.

SPDX Tag

/* SPDX-License-Identifier: GPL-2.0-only */

From: https://spdx.org/licenses/GPL-2.0-only.html

Issues
  • Start fixing memory leaks

    Start fixing memory leaks

    There are currently some memory leaks and this pull request fixes about half of it according to valgrind.

    opened by tomspur 7
  • Dropped unused variable

    Dropped unused variable "entry" detected by Coverity

    The following two issues which were introduced between 2.11 and 2.12 were fixed:

    • Fixed the issue when the closedir in the intel_cpus.cpp could be called with the NULL arg.
    • Dropped unused local variable "entry" in the devfreq.cpp.

    Signed-off-by: Jaroslav Škarvada [email protected]

    opened by yarda 6
  • Release 2.11 availability on https://01.org/powertop/downloads

    Release 2.11 availability on https://01.org/powertop/downloads

    Do you plan on adding release 2.11 to https://01.org/powertop/downloads? I can't built the tarball retrieved from https://github.com/fenrus75/powertop/releases/tag/v2.11 because it misses the configure script and autoreconf does not work because it also misses the version-long file.

    opened by ffontaine 5
  • make - no such a file or directory.

    make - no such a file or directory.

    I'm trying to update my version following the commands listed into the README file but when I try to run ./make I receive an output - no such a file or directory. What do I do wrong? I have installed all the sample packages for Ubuntu, I'm using elementary OS Hera, based on Ubuntu 18.04

    opened by nnmlss 5
  • configure.ac: Use PKG_PROG_PKG_CONFIG macro

    configure.ac: Use PKG_PROG_PKG_CONFIG macro

    The goal of this commit is to fix an error encountered when building 2.13 on Chromium OS.

    emerge-${board} powertop
      <snip>
      checking for libnl-3.0 >= 3.0 libnl-genl-3.0 >= 3.0... yes
      checking for library containing inet_aton... none required
       * pkg-config: ERROR: Do not call unprefixed tools directly.
       * pkg-config: ERROR: For board tools, use `tc-export PKG_CONFIG` (or ${CHOST}-pkg-config).
       * pkg-config: ERROR: For build-time-only tools, `tc-export BUILD_PKG_CONFIG` (or ${CBUILD}-pkg-config).
       * python3 /mnt/data/chromiumos/chromite/bin/cros_sdk --enter --chrome_root=chrome_root
       *   `-python3 /mnt/data/chromiumos/chromite/bin/cros_sdk --enter --chrome_root=chrome_root
       *       `-bash
       *           `-emerge -b /usr/lib/python-exec/python3.6/emerge --root-deps powertop
       *               `-sandbox /usr/lib/portage/python3.6/ebuild.sh configure
       *                   `-ebuild.sh /usr/lib/portage/python3.6/ebuild.sh configure
       *                       `-ebuild.sh /usr/lib/portage/python3.6/ebuild.sh configure
       *                           `-configure ./configure --prefix=/usr --build=x86_64-pc-linux-gnu --host=x86_64-cros-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --disable-dependency-tracking --disable-silent-rules --docdir=/usr/share/doc/powertop-2.13 --htmldir=/usr/share/doc/powertop-2.13/html --with-sysroot=/build/volteer --libdir=/usr/lib64 --disable-nls
       *                               `-pkg-config /build/volteer/tmp/portage/sys-power/powertop-2.13/temp/build-toolchain-wrappers/pkg-config --exists bash-completion
       *                                   `-pstree -a -A -s -l 10567
       * ERROR: sys-power/powertop-2.13::portage-stable failed (configure phase):
       *   Bad pkg-config [--exists bash-completion] invocation
    <snip>
    

    The environment variable is populated for board specific tooling.

    declare -x PKG_CONFIG="/build/volteer/build/bin/pkg-config"
    
    opened by edwarddavidbaker 4
  • Indicate that the <tab> key is to use to navigate in the application

    Indicate that the key is to use to navigate in the application

    This makes is explicit how to leave or navigate in the program from the front page. It changes one string for the translators.

    Fixes https://bugzilla.redhat.com/1191112

    opened by pypingou 4
  • Add service file

    Add service file

    On openSUSE we install this service file to /usr/lib/systemd/system/powertop.service.

    opened by jubalh 4
  • use pkg-config to detect proper ncurses flags.

    use pkg-config to detect proper ncurses flags.

    Full details at https://bugs.gentoo.org/show_bug.cgi?id=486124 and https://bugs.gentoo.org/show_bug.cgi?id=457530

    In gentoo, tinfo is an optional part of ncurses and that causes an issue when pkg-config is not used to detect the proper flags to use ncurses support. Patch written by Jeroen Roovers.

    opened by ZeroChaos- 3
  • Fix powertop build with libc++.

    Fix powertop build with libc++.

    header is not automatically included with libc++. Add it explicitly to make powertop build with libc++.

    This fixes the following errors: devices/gpu_rapl_device.cpp:35:14: error: use of undeclared identifier 'time'; did you mean 'tie'? last_time = time(NULL); ^~~~ devices/gpu_rapl_device.cpp:45:14: error:use of undeclared identifier 'time'; did you mean 'tie'? last_time = time(NULL); ^~~~

    parameters/learn.cpp:161:10: error: use of undeclared identifier 'time'; did you mean 'tie'? start = time(NULL); ^~~~

    opened by m-gupta 3
  • Quite -> Quiet in message catalogs (with an additional rough fix for the Russian translation)

    Quite -> Quiet in message catalogs (with an additional rough fix for the Russian translation)

    ... Russian.)

    b8af9381618d0ce5508685f75391cf0b6172a946 began this work, but missed a string and its translations.

    opened by obra 3
  • Question about WakeUp tab

    Question about WakeUp tab

    I'd like to use powertop --auto-tune as a systemd service on startup, but it disables a selection in the WakeUp tab that I'd like to keep enabled.

    Is there anyway to permanently enable something in the WakeUp tab so that it doesn't get auto-tuned away?

    opened by hahuang65 0
  • powertop-2.14: compilation fails with 'undefined reference to symbol 'pthread_create@@GLIBC_2.2.5'

    powertop-2.14: compilation fails with 'undefined reference to symbol '[email protected]@GLIBC_2.2.5'

    It's using pthread, but it doesn't build/link with -pthread by default. I think it should build out-of-the box without any special user LDFLAGS/CGLAGS.

    Build log snip on Fedora rawhide (f35):

    libtool: link: g++ -Wall -Wformat -Wshadow -fno-omit-frame-pointer -fstack-protector -I/usr/include/libnl3 -D_DEFAULT_SOURCE -D_XOPEN_SOURCE=600 -O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -Wl,-z -Wl,relro -Wl,--as-needed -Wl,-z -Wl,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -o powertop powertop-devlist.o powertop-display.o powertop-lib.o powertop-main.o calibrate/powertop-calibrate.o cpu/powertop-abstract_cpu.o cpu/powertop-cpu.o cpu/powertop-cpu_core.o cpu/powertop-cpu_linux.o cpu/powertop-cpu_package.o cpu/powertop-cpu_rapl_device.o cpu/powertop-cpudevice.o cpu/powertop-dram_rapl_device.o cpu/powertop-intel_cpus.o cpu/powertop-intel_gpu.o cpu/rapl/powertop-rapl_interface.o devices/powertop-ahci.o devices/powertop-alsa.o devices/powertop-backlight.o devices/powertop-devfreq.o devices/powertop-device.o devices/powertop-gpu_rapl_device.o devices/powertop-i915-gpu.o devices/powertop-network.o devices/powertop-rfkill.o devices/powertop-runtime_pm.o devices/powertop-thinkpad-fan.o devices/powertop-thinkpad-light.o devices/powertop-usb.o measurement/powertop-acpi.o measurement/powertop-extech.o measurement/powertop-measurement.o measurement/powertop-sysfs.o measurement/powertop-opal-sensors.o parameters/powertop-learn.o parameters/powertop-parameters.o parameters/powertop-persistent.o perf/powertop-perf.o perf/powertop-perf_bundle.o process/powertop-do_process.o process/powertop-interrupt.o process/powertop-powerconsumer.o process/powertop-process.o process/powertop-processdevice.o process/powertop-timer.o process/powertop-work.o report/powertop-report-data-html.o report/powertop-report-formatter-base.o report/powertop-report-formatter-csv.o report/powertop-report-formatter-html.o report/powertop-report-maker.o report/powertop-report.o tuning/powertop-bluetooth.o tuning/powertop-ethernet.o tuning/powertop-iw.o tuning/powertop-runtime.o tuning/powertop-tunable.o tuning/powertop-tuning.o tuning/powertop-tuningsysfs.o tuning/powertop-tuningusb.o tuning/powertop-tuningi2c.o tuning/powertop-wifi.o wakeup/powertop-wakeup.o wakeup/powertop-waketab.o wakeup/powertop-wakeup_ethernet.o wakeup/powertop-wakeup_usb.o  -lnl-genl-3 -lnl-3 -lncursesw -lncurses -ltinfo -lpci ../traceevent/.libs/libtraceevnet.a
    /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/11/libstdc++.so: undefined reference to symbol '[email protected]@GLIBC_2.2.5'
    /usr/bin/ld: /usr/lib64/libpthread.so.0: error adding symbols: DSO missing from command line
    collect2: error: ld returned 1 exit status
    

    In the src/Makefile.am it's using PTHREAD_CFLAGS and PTHREAD_LIBS, but it's probably missing corresponding autotools macro call (ax_pthread). I used the following patch in Fedora downstream and can PR if needed:

    --- a/configure.ac
    +++ b/configure.ac
    @@ -3,6 +3,7 @@
     
     AC_PREREQ([2.69])
     AC_INIT([powertop], [2.14], [[email protected]], [], [https://01.org/powertop])
    +AC_CANONICAL_TARGET
     AM_INIT_AUTOMAKE([
     	-Wall
     	1.12.2
    @@ -37,6 +38,7 @@ AC_PROG_CC
     AC_PROG_INSTALL
     AM_PROG_CC_C_O
     PKG_PROG_PKG_CONFIG
    +AX_PTHREAD
     
     # Checks for libraries.
     
    
    opened by yarda 0
  • Fix buffer overrun

    Fix buffer overrun

    If a content of /proc/[pid]/cmdline was longer than 4096, then buffer overrun occured. (Because cmdline_to_string required a double '\0' at the end of the string) Moreover, if a cmdline contained a zero length argument, cmdline_to_string ignored the rest of arguments.

    opened by kariya-mitsuru 0
  • Bogus (380 mW) value for power consumption

    Bogus (380 mW) value for power consumption

    I have a HP EliteBook 735 G6 laptop. It is AMD-based. On it, powertop reports completely bogus values for power consumption and battery time remaining. Something like:

    The battery reports a discharge rate of 368 mW
    The energy consumed was 7.38 J
    The estimated remaining time is 50 hours, 6 minutes
    

    At the same time, Cinnamon battery applet correctly reports that the battery is good only for 2 hours and 20 minutes.

    Presumably, this is because none of the methods that powertop can use for determining the battery discharge rate actually works:

    20:06:58.602628 openat(AT_FDCWD, "/sys/class/power_supply/BAT0/present", O_RDONLY) = 123
    20:06:58.602687 read(123, "1\n", 8191)  = 2
    20:06:58.603210 openat(AT_FDCWD, "/sys/class/power_supply/BAT0/status", O_RDONLY) = 123
    20:06:58.603286 read(123, "Discharging\n", 8191) = 12
    20:06:58.604335 openat(AT_FDCWD, "/sys/class/power_supply/BAT0/power_now", O_RDONLY) = -1 ENOENT (No such file or directory)
    20:06:58.604398 openat(AT_FDCWD, "/sys/class/power_supply/BAT0/energy_now", O_RDONLY) = -1 ENOENT (No such file or directory)
    20:06:58.604449 openat(AT_FDCWD, "/sys/class/power_supply/BAT0/voltage_now", O_RDONLY) = 123
    20:06:58.604500 read(123, "11140000\n", 8191) = 9
    20:06:58.604571 openat(AT_FDCWD, "/sys/class/power_supply/BAT0/current_now", O_RDONLY) = 123
    20:06:58.604620 read(123, 0x5630a5a7e730, 8191) = -1 ENODEV (No such device)
    

    The only usable attribute is charge_now, but, alas, powertop does not know how to use it.

    $ LANG=en_US.UTF-8 grep -rH .
    uevent:POWER_SUPPLY_NAME=BAT0
    uevent:POWER_SUPPLY_TYPE=Battery
    uevent:POWER_SUPPLY_STATUS=Discharging
    uevent:POWER_SUPPLY_PRESENT=1
    uevent:POWER_SUPPLY_TECHNOLOGY=Li-ion
    uevent:POWER_SUPPLY_CYCLE_COUNT=35
    uevent:POWER_SUPPLY_VOLTAGE_MIN_DESIGN=11550000
    uevent:POWER_SUPPLY_VOLTAGE_NOW=11166000
    uevent:POWER_SUPPLY_CHARGE_FULL_DESIGN=4330000
    uevent:POWER_SUPPLY_CHARGE_FULL=3009000
    uevent:POWER_SUPPLY_CHARGE_NOW=1459000
    uevent:POWER_SUPPLY_CAPACITY=48
    uevent:POWER_SUPPLY_CAPACITY_LEVEL=Normal
    uevent:POWER_SUPPLY_MODEL_NAME=Primary
    uevent:POWER_SUPPLY_MANUFACTURER=Hewlett-Packard
    uevent:POWER_SUPPLY_SERIAL_NUMBER=13856 2020/04/22
    charge_full_design:4330000
    serial_number:13856 2020/04/22
    technology:Li-ion
    grep: current_now: No such device
    charge_now:1459000
    present:1
    power/runtime_active_time:0
    power/runtime_status:unsupported
    grep: power/autosuspend_delay_ms: Input/output error
    power/runtime_suspended_time:0
    power/control:auto
    manufacturer:Hewlett-Packard
    hwmon2/in0_input:11166
    hwmon2/power/runtime_active_time:0
    hwmon2/power/runtime_status:unsupported
    grep: hwmon2/power/autosuspend_delay_ms: Input/output error
    hwmon2/power/runtime_suspended_time:0
    hwmon2/power/control:auto
    grep: hwmon2/curr1_input: No such device
    hwmon2/name:BAT0
    type:Battery
    charge_full:3009000
    capacity:48
    cycle_count:35
    voltage_now:11166000
    status:Discharging
    alarm:0
    model_name:Primary
    voltage_min_design:11550000
    capacity_level:Normal
    
    opened by patrakov 0
  • powertop2tuned new_profile_name --force failed

    powertop2tuned new_profile_name --force failed

    Environment information: powertop-2.13 tuned-2.10.0

    when i run powertop2tuned new_profile_name --force Excpected result: run success Actual result: failed and return 255

    opened by yangzz-97 0
  • Jittery input through dock

    Jittery input through dock

    Hardware: Dell Latitude E7270 I use an official Dell docking station (can't recall the exact name, But it's an Eport with USB3 support, without the serial ports)

    When I powerTOP is running, and I set the laptop in the dock, the Logitech Unify input devices get jittery the mouse does not move properly, and key strokes are often delayed.

    Powertop is run with powertop --auto-tune

    opened by rasmus91 0
  • running powertop drops all scaling_max_frequency to lowest on arm64 yoga c630 laptop

    running powertop drops all scaling_max_frequency to lowest on arm64 yoga c630 laptop

    Hello, On ubuntu 20.04 with powertop (from repo or newest git) when I run the program It sets my scaling_max_frequency to lowest possible frequency. My laptop has 4 slow cores at 1.7ghz and 4 fast cores at 2.9ghz. It seems mostly random on which cores it will make slow, usually (%65? of time) the slow cores get slowed, slightly less often the higher cores get slowed and sometimes both. I edited src/cpu/abstract_cpu.cpp and commented out lines 479 to 492 which are supposed to reapply correct max scaling freq after "wiggling" the cpu .Now the issue seems to have stopped. I can fix the cpu's by simply running; echo 2956800 > /sys/devices/system/cpu/cpufreq/policy4/scaling_max_freq echo 1766400 > /sys/devices/system/cpu/cpufreq/policy0/scaling_max_freq

    If this is caused by the HMP multicore setup or something else Im not sure. If a fix could be mainlined even if a command line or compile time option would be great. Thank you

    opened by bm16ton 0
  • Unaligned column headers.

    Unaligned column headers.

    This is with PowerTOP v2.11 from Ubuntu, as I could not build from repo source.

    When using the curses interface, the column descriptions are not aligned with the columns that they describe. Resizing the xterm does not fix it.

    Screenshot from 2020-11-03 09-50-10

    opened by stolk 0
  • gettext version on Ubuntu.

    gettext version on Ubuntu.

    I have an up to date Ubuntu LTS, and used the apt command from the documentation.

    Why trying to build...

    $ sh autogen.sh 
    autoreconf: Entering directory `.'
    autoreconf: running: autopoint
    autopoint: *** The AM_GNU_GETTEXT_VERSION declaration in your configure.ac
                   file requires the infrastructure from gettext-0.20.2 but this version
                   is older. Please upgrade to gettext-0.20.2 or newer.
    autopoint: *** Stop.
    autoreconf: autopoint failed with exit status: 1
    

    Is the version dictated by configure.ac unnecessary high, or does Ubuntu LTS just lag too much?

    $ dpkg --list | grep libgettext
    ii  libgettextpo-dev:amd64                     0.19.8.1-10build1                     amd64        process PO files - static libraries and headers
    ii  libgettextpo0:amd64                        0.19.8.1-10build1                     amd64        process PO files - shared library
    
    opened by stolk 2
  • Cannot turn off

    Cannot turn off "Bluetooth device" tuneable

    I'm using powertop, and it's a bit aggressive suspending my Bluetooth, so my mouse is suspended if I stop moving it for a few seconds.

    I'm trying to turn this off by running powertop, and then in the Tuneables tab I select Bluetooth device interface status and hit enter.

    This seems to attempt to run /usr/sbin/hciconfig hci0 up &> /dev/null &. However, hciconfig has been deprecated upstream and no longer ships with bluez (it's been absent for about 3 years now).

    Bluez seems to now include btmgmt, though I haven't been able to figure out how to turn off power saving with it.

    opened by WhyNotHugo 0
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