![]() the expected 10%)įrequent wakeups (5 msec) – expected frequency is 10 msec with audio playback Since the app had no codecs, there was no offloading to graphics.Intel® VTune™ Amplifier and WPA Results: Before and After 1 Figure 1 shows the Intel Power Gadget’s UI on a Windows platform. To understand and address PowerDVD’s impact on battery life, we used Intel Power Gadget and Battery Life Analyzer (BLA) to validate the application’s SoC power usage. The normal frequency is 10 msec with audio playback. The Windows Performance Analyzer tests revealed frequent wakeups (5 msec).Intel VTune results revealed no offloading of graphics to the GPU and high CPU utilization of 70% (we expected about 10%).It should be ~1.7 W on a 4th generation Intel processor. Intel Power Gadget showed SoC power to be ~6 W.Package C0 was pegged 100% during media playback, while we expected it to be at 20%.Cyberlink PowerDVD 10 and Cyberlink PowerDVD 12.Memory 4 GB display : 1920x1080p HD panel.CPU speed : 1.4 GHz non-turbo frequency.4th generation Intel® Core™ i7 processor.Optimization of Cyberlink PowerDVD for Power Consumption The following describes the process and tools that resulted in the optimized version of PowerDVD. Used an overlay to reduce extra memory copies.Removed the sleep loop calls from two threads.Offloaded graphics to the GPU (using the Intel® Media SDK).Why was PowerDVD able to playback only an hour of media on a fully charged battery?Īfter two months and three iterations of analysis and validation, the engineering teams improved battery life by making the following changes:.What is the power consumption from PowerDVD during a 1080p streaming media playback?.We needed to answer the following questions: New capabilities, such as HD streaming, required running more processes, consuming much more memory and CPU cycles. Adding content streaming came with a price, however. It can also stream content from external content servers. In addition to functioning on a client, the latest software can turn a device into a DLNA server and stream multimedia content from a PC across a network to other devices. PowerDVD offers new features for organizing, streaming media, mobile devices, and social media. The Challenges of Optimizing Battery Life 10 msec wake up frequency for local or streaming media playback frequency of 10%. The Windows* Performance Analyzer showed frequent wakeups (5 Msec) vs.Intel® VTune™ analyzer reported CPU utilization of 25% down from 70%.Reduced SoC power from ~6 W to ~1.8W using Intel® Power Gadget.Package C0 reduced to 20% from 100% during media playback.The Intel team was able to make the following improvements to PowerDVD: Finally, we’ll provide the data that shows the reduced power consumption following optimization. We also provide an analysis of PowerDVD behavior to identify issues such as decoding on CPU, large numbers of context switches, high interrupt rates, etc., causing increased power consumption. Then, we’ll discuss the power consumption profile of a Cyberlink PowerDVD streaming media application and its impact on battery life for mobile devices. ![]() In this case study, we showcase how Intel and Cyberlink collaborated to optimize the PowerDVD* application to give best-in-class experience on Intel devices.įirst, we’ll talk about the challenges that Cyberlink encountered when adding content streaming features to PowerDVD and the tools and techniques Intel used to improve the power consumption of PowerDVD. This app is often included as a pre-bundled application from OEMs. Cyberlink PowerDVD 10* (PowerDVD*) is one of the top players in the industry for HD, and 3D movie playback. Because these devices have limited battery capacity, energy efficiency is important. Users have become accustomed to streaming multimedia content to their mobile devices "on-demand" from content servers in the cloud. Low battery life is one of the most serious issues currently plaguing mobile devices in general and Ultrabook™ devices and tablets specifically.
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