On (05/10/12 14:29), Chris Ferron wrote:
> We are pleased to announce the release of PowerTOP v2.0 which concludes a
> major overhaul of the code base, and adds exciting new features.
>
Congratulations everyone! Well done!
Sergey
> About PowerTOP
>
> PowerTOP is a Linux tool to diagnose issues with power consumption and
> power management. In addition to being a diagnostic tool, PowerTOP also
> has an
> interactive mode where you can experiment with various power management
> settings for cases where the Linux distribution has not enabled those
> settings.
> PowerTOP reports which components in the system are most likely to blame
> for a higher-than-needed power consumption, ranging from software
> applications to active components in the system. Detailed screens are
> available for CPU C and P states, device activity, and software activity.
> For many years, PowerTOP has been used heavily by Intel, Linux
> distributors, and various parts of the open source community. We're hoping
> that our users find the second generation even more useful for their
> needs.
>
> Highlights
>
>
> • Greatly enhanced diagnostic capabilities using the Linux kernel perf
> framework
> • New tab-based UI which displays more detailed information in real time
> • Advanced reporting capabilities for offline analysis including HTML5
> and CSV formats.
>
>
> Release Details
>
> PowerTOP v2.0 has four major thought tracks:
>
> 1. Keep the integrity of PowerTOP v1.x, but update it to be equally
> relevant to its growing user base.
> 2. Take the interests from our user base, such as the need and want for
> greater reportability, and more tunables information.
> 3. Keep PowerTOP moving forward with changes to the Linux kernel, such as
> the depreciation of power trace events, like power_frequency starting
> in Linux kernel version 3.0.
> 4. Make sure PowerTOP was updated with emerging Intel Architecture, such
> as the newer Ivy Bridge chipset.
>
> Version 2.0 has several new key features and updates. The first big change
> is the use of a hardened library called libparseevents, for accessing the
> kernel "perf" infrastructure. With this enhancement, we are able to
> provide much more accurate data, and be more flexible with any future
> kernel development. There has been a great deal of work done in the area
> of CPU data measurement and diagnostics. Full accurate support was added
> for CPU idle, frequency, and power traces, along with expanded frequency
> state reporting for CPUs with more than 10 states. With these additions,
> PowerTOP v2.0 now gives a clearer picture of how programs affect CPU
> utilization, and the impact on important power-saving sleep states.
>
> PowerTOP v2.0 also includes other key advances, such as system devices
> tracking, which gives you clear information on which devices (if any) are
> problematic in terms of power behavior, GPU activity measurements, and VFS
> opts activity measurements. This allows PowerTOP v2.0 users a more
> complete overview of the system.
>
> In addition to the new features, several enhancements have been made in
> these areas:
>
>
> • Increased WLAN support—PowerTOP now supports multiple WLAN interfaces
> • Enhanced i915 driver support
> • More robust battery data acquisition
> • Real time measurement support for USB hot-plug.
>
>
> With all the enhancements and additions, there has also been extensive
> work on PowerTOP reports. Reporting has been highlighted time and time
> again as a much needed and desired enhancement. To address all the
> reporting needs of our users, PowerTOP v2.0 now runs in two modes:
> interactive and noninteractive. This gives you two representations of the
> data: static and interactive real-time.
>
> In interactive mode, PowerTOP v2.0 is enhanced with a redesigned,
> tab-based user interface with full on-demand window refresh support. This
> new UI gives you a clean, organized, real-time way to visualize and
> analyze effects on power. Data is now displayed and organized into tabs:
>
> • Overview Tab: details the summary information about total CPU and
> wakeups per second for the System, GPU, and VFS ops. Within the
> summary view, you also see the consumer status for interrupts,
> devices, timers, processes, and more.
> • Idle stats tab: details the summary information on the various
> processor cores, and the status of the processor package.
> • Frequency stats tab: details the summary information about the clock
> speeds, and the percentage used in said clocks, for each processor
> core and package.
> • Device stats tab: details the summary device activity overview,
> network device transmission rates, and GPU ops rates.
> • Tunables tab: summarizes our best known diagnostic recommendations and
> options to apply. This tab is also interactive with the ability of
> allowing you to toggle the options while in interactive mode. So in
> real time, you can see what affect PowerTOP’s recommendations will
> have on power.
>
>
> In the non-interactive mode (aka reporting mode), there has been a major
> overhaul in thought and functionality. PowerTOP v2.0 now allows you to
> specify not only the duration of each test measurement cycle, but the
> number of iterations to measure. Depending on your needs, PowerTOP v2.0
> now produces two different report formats: HTML and CSV.
>
>
> • HTML: The HTML report contains all the information seen in the real
> time UI, but in a single static report. Additionally, we are happy to
> say that PowerTOP’s HTML reports are also in an HTML5 application
> format, giving any user with an HTML5-supported browser a clean,
> organized tab-based report. As nice as this is for reviewing data,
> there is also the ALL tab in the HTML5 application that presents all
> the data in one long format for the total picture. This is also the
> standard format for HTML reports generated for non-HTML5 browsers. To
> close the gap in your wants and needs, PowerTOP v2.0 now reports the
> tunable recommendations. Although PowerTOP is not a permanent tuning
> tool, PowerTOP indeed has the ability to test the tunable effects of
> its suggestions. As such, it was only reasonable that we include these
> tunables in the report.
>
>
>
> • CSV: The CSV report is a single, static, comma-separated,
> value-delimited report, giving you ultimate control for data
> manipulation for your specific needs, such as trending and analytical
> analysis.
>
>
> Project Details
> From a project point of view, there has been several changes. PowerTOP
> v2.0 has now been autotooled to support and increase portability. There is
> also limited Android make support, which was completed and spearheaded by
> community members.
> We are also excited to announce that the PowerTOP project will have a new
> home on 01.org. This will be the single point for releases, blogs, and
> information on PowerTOP moving forward. In our move to 01.org, we will
> also be moving and consolidating the current email lists. Although this is
> a hassle, it is important to consolidate the current website, and the two
> mailing lists, used for PowerTOP, to their new home on 01.org.
>
>
> • URL: [1]https://01.org/projects/powertop
> • Download: [2]https://01.org/powertop/downloads/2012/powertop-v2.0
>
>
> Mailing list:
>
>
> • Discussions about PowerTop occur on
> the [3][email protected] mailing list
> • Subscribe to the list
> at [4]https://lists.01.org/mailman/listinfo/powertop
> • Archives are found at [5]http://lists.01.org/pipermail/powertop
>
> The development PowerTOP git repositories are hosted at GitHub.
>
> • URL: [6]https://github.com/fenrus75/powertop
> • HTTP: [7]https://github.com/fenrus75/powertop.git
> • GIT-readonly:[8] git://github.com/fenrus75/powertop.git
>
> Note: We will not use any of the integrate, merge, or tracking
> functions of GitHub, so please continue to use the provided lists.
>
> Our thanks
>
> For this release, we would like to give a special thanks to the following
> contributors, and all contributors to PowerTOP. Not in any particular
> order:
> Sergey Senozhatsky, Márton Németh, Mike Frysinger, John Mathew, Thomas
> Spura, Henry Gebhardt, Jaroslav Škarvada, Anssi Hannula, Jan Kaluža,
> Kristen Carlson Accardi, Mikel Olasagasti Uranga, Jussi Kukkonen.
>
> What’s Next
>
> Moving forward, you can expect more great changes, and more interactivity.
> We have plans, ideas, and a newly restored vigor towards PowerTOP. We will
> be planning iterative releases, giving blog updates, and talking
> contributions, not only in code, but QA, documentation, and functional
> suggestions (especially if the submitter is willing to also code on
> his/her functional suggestions). We don’t have a lot of dedicated
> resources, but we now have more then we’ve ever had before.
> Current v2.1 goals under consideration are:
>
>
> • Localization of the UI into approximately 10 to 20 languages
> • Continued improvements to the UI, including resolution scaling
> • Continued support of emerging Intel Architecture
> • Continued support of emerging Kernel development
>
> References
>
> Visible links
> 1. https://01.org/projects/powertop
> 2. https://01.org/powertop/downloads/2012/powertop-v2.0
> 3. http://[email protected]/
> 4. https://lists.01.org/mailman/listinfo/powertop
> 5. http://lists.01.org/pipermail/powertop
> 6. https://github.com/fenrus75/powertop
> 7. https://github.com/fenrus75/powertop.git
> 8. http://git//github.com/fenrus75/powertop.git
> _______________________________________________
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