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Author Archives: Justin Greene

Looking under the hood

In the next couple of weeks, we’ll publish the source code and build instructions for the latest HDXPRT 2014 and BatteryXPRT 2014 builds. Access to XPRT source code is one of the benefits of BenchmarkXPRT Development Community membership. For readers who may not know, this a good time to revisit the reasons we make the source code available.

The primary reason is transparency; we want the XPRTs to be as open as possible. As part of our community model for software development, the source code is available to anyone who joins the community. Closed-source benchmark development can lead some people to infer that a benchmark is biased in some way. Our approach makes it impossible to hide any biases.

Another reason we publish source code is to encourage collaborative development and innovation. Community members are involved in XPRT development from the beginning, helping to identify emerging technologies in need of reliable benchmarking tools, suggesting potential workloads and improvements, reviewing design documents, and offering all sorts of general feedback.

Simply put, if you’re interested in benchmarking and the BenchmarkXPRT Development Community, then we’re interested in what you have to say! Community input helps us at every step of the process, and ultimately helps us to create benchmarking tools that are as reliable and relevant as possible.

If you’d like to review XPRT source code, but haven’t yet joined the community, we encourage you to go ahead and join! It’s easy, and if you work for a company or organization with an interest in benchmarking, you can join the community for free. Simply fill out the form with your company e-mail address and click the option to be considered for a free membership. We’ll contact you to verify the address is real and then activate your membership.

If you have any other questions about community membership or XPRT source code, feel free to contact us. We look forward to hearing from you!

Justin

Running Android-oriented XPRTs on Chrome OS

Since last summer, we’ve been following Google’s progress in bringing Android apps and the Google Play store to Chromebooks, along with their plan to gradually phase out support for Chrome apps over the next few years. Because we currently offer apps that assess battery life and performance for Android devices (BatteryXPRT and MobileXPRT) and Chromebooks (CrXPRT), the way this situation unfolds could affect the makeup of the XPRT portfolio in the years to come.

For now, we’re experimenting to see how well the Android app/Chrome OS merger is working with the devices in our lab. One test case is the Samsung Chromebook Plus, which we featured in the XPRT Weekly Tech Spotlight a few weeks ago. Normally, we would publish only CrXPRT and WebXPRT results for a Chromebook, but installing and running MobileXPRT 2015 from the Google Play store was such a smooth and error-free process that we decided to publish the first MobileXPRT score for a device running Chrome OS.

We also tried running BatteryXPRT on the Chromebook Plus, but even though the installation was quick and easy and the test kicked off without a hitch, we could not generate a valid result. Typically, the test would complete several iterations successfully, but terminate before producing a result. We’re investigating the problem, and will keep the community up to date on what we find.

In the meantime, we continue to recommend that Chromebook testers use CrXPRT for performance and battery life assessment. While we haven’t encountered any issues running MobileXPRT 2015 on Chromebooks, CrXPRT has a proven track record.

If you have any questions about running Android-oriented XPRTs on Chrome OS, or insights that you’d like to share, please let us know.

Justin

Digging deeper

From time to time, we like to revisit the fundamentals of the XPRT approach to benchmark development. Today, we’re discussing the need for testers and benchmark developers to consider the multiple factors that influence benchmark results. For every device we test, all of its hardware and software components have the potential to affect performance, and changing the configuration of those components can significantly change results.

For example, we frequently see significant performance differences between different browsers on the same system. In our recent recap of the XPRT Weekly Tech Spotlight’s first year, we highlighted an example of how testing the same device with the same benchmark can produce different results, depending on the software stack under test. In that instance, the Alienware Steam Machine entry included a WebXPRT 2015 score for each of the two browsers that consumers were likely to use. The first score (356) represented the SteamOS browser app in the SteamOS environment, and the second (441) represented the Iceweasel browser (a Firefox variant) in the Linux-based desktop environment. Including only the first score would have given readers an incomplete picture of the Steam Machine’s web-browsing capabilities, so we thought it was important to include both.

We also see performance differences between different versions of the same browser, a fact especially relevant to those who use frequently updated browsers, such as Chrome. Even benchmarks that measure the same general area of performance, for example, web browsing, are usually testing very different things.

OS updates can also have an impact on performance. Consumers might base a purchase on performance or battery life scores and end up with a device that behaves much differently when updated to a new version of Android or iOS, for example.

Other important factors in the software stack include pre-installed software, commonly referred to as bloatware, and the proliferation of apps that sap performance and battery life.

This is a much larger topic than we can cover in the blog. Let the examples we’ve mentioned remind you to think critically about, and dig deeper into, benchmark results. If we see published XPRT scores that differ significantly from our own results, our first question is always “What’s different between the two devices?” Most of the time, the answer becomes clear as we compare hardware and software from top to bottom.

Justin

Celebrating one year of the XPRT Weekly Tech Spotlight

It’s been just over a year since we launched the XPRT Weekly Tech Spotlight by featuring our first device, the Google Pixel C. Spotlight has since become one of the most popular items at BenchmarkXPRT.com, and we thought now would be a good time to recap the past year, offer more insight into the choices we make behind the scenes, and look at what’s ahead for Spotlight.

The goal of Spotlight is to provide PT-verified specs and test results that can help consumers make smart buying decisions. We try to include a wide variety of device types, vendors, software platforms, and price points in our inventory. The devices also tend to fall into one of two main groups: popular new devices generating a lot of interest and devices that have unique form factors or unusual features.

To date, we’ve featured 56 devices: 16 phones, 11 laptops, 10 two-in-ones, 9 tablets, 4 consoles, 3 all-in-ones, and 3 small-form-factor PCs. The operating systems these devices run include Android, ChromeOS, iOS, macOS, OS X, Windows, and an array of vendor-specific OS variants and skins.

As much as possible, we test using out-of-the-box (OOB) configurations. We want to present test results that reflect what everyday users will experience on day one. Depending on the vendor, the OOB approach can mean that some devices arrive bogged down with bloatware while others are relatively clean. We don’t attempt to “fix” anything in those situations; we simply test each device “as is” when it arrives.

If devices arrive with outdated OS versions (as is often the case with Chromebooks), we update to current versions before testing, because that’s the best reflection of what everyday users will experience. In the past, that approach would’ve been more complicated with Windows systems, but the Microsoft shift to “Windows as a service” ensures that most users receive significant OS updates automatically by default.

The OOB approach also means that the WebXPRT scores we publish reflect the performance of each device’s default browser, even if it’s possible to install a faster browser. Our goal isn’t to perform a browser shootout on each device, but to give an accurate snapshot of OOB performance. For instance, last week’s Alienware Steam Machine entry included two WebXPRT scores, a 356 on the SteamOS browser app and a 441 on Iceweasel 38.8.0 (a Firefox variant used in the device’s Linux-based desktop mode). That’s a significant difference, but the main question for us was which browser was more likely to be used in an OOB scenario. With the Steam Machine, the answer was truly “either one.” Many users will use the browser app in the SteamOS environment and many will take the few steps needed to access the desktop environment. In that case, even though one browser was significantly faster than the other, choosing to omit one score in favor of the other would have excluded results from an equally likely OOB environment.

We’re always looking for ways to improve Spotlight. We recently began including more photos for each device, including ones that highlight important form-factor elements and unusual features. Moving forward, we plan to expand Spotlight’s offerings to include automatic score comparisons, additional system information, and improved graphical elements. Most importantly, we’d like to hear your thoughts about Spotlight. What devices and device types would you like to see? Are there specs that would be helpful to you? What can we do to improve Spotlight? Let us know!

Justin

A new HDXPRT 2014 build is available

Last fall, we identified a way to run HDXPRT 2014, originally developed for Windows 8, on Windows 10. The method involved overwriting the HDXPRT CPU-Z files with newer versions and performing a few additional pre-test configuration steps. You can read more details about those steps here.

Today, we’re releasing a new build of HDXPRT 2014 (v1.2) that eliminates the need to overwrite the CPU-Z files. The new build is available for download at HDXPRT.com. Please note that the app package is 5.08 GB, so allow time and space for the download process.

We also updated the HDXPRT 2014 User Manual to reflect changes in pre-test system configuration and to include the settings we recommend for newer builds of Windows 10.

The changes in the new build do not affect results, so v1.2 scores are comparable to v1.1 scores on the same system.

The new build ran well during testing in our labs, but issues could emerge as Microsoft releases new Windows updates. If you have any questions about HDXPRT or encounter any issues during testing, we encourage you to let us know.

We look forward to seeing your test results!

Justin

BatteryXPRT 2014 gets an update

After Android 7 (Nougat) was released on select devices this past fall, we discovered an issue with BatteryXPRT on devices running Android 7 and above. The battery life tests were completing accurately and reliably, but the test was not producing a performance score.

The problem was a result of significant changes in the Android development environment. Android 7 restricted the flags used for different target architectures when linking native code components, and that caused issues while executing part of the Create Slideshow workload. We resolved the issue by changing the linked flags. Also, we migrated the BatteryXPRT code from the Eclipse and Android SDK development environments to the up-to-date Android Studio environment. This allowed us to rebuild the app in a way that maintains compatibility with the most recent versions of Android.

Today, we’re releasing a new build of BatteryXPRT 2014 (v104) at BatteryXPRT.com and the Google Play store. Scores from this build are comparable with previous BatteryXPRT scores, and if you’re testing with a version of BatteryXPRT that you downloaded from the Google Play store, you should receive the new build via an app update.

Click here to download the new BatteryXPRT installer (330 MB) directly from our site.

For users who have limited bandwidth or trouble accessing the Google Play store, downloading the APK files (26.7 MB total) may make installation easier.

Download the updated BatteryXPRT APK (2.8 MB) directly from our site.

Download the updated BatteryXPRT Tests APK (23.9 MB) directly from our site.

If you have any questions about the update or any other XPRT-related topic, feel free to contact us at BenchmarkXPRTSupport@principledtechnologies.com.

Justin

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