BenchmarkXPRT Development Community Blog

Our baby has a new name!

on May 16, 2013

The upcoming Android benchmark will be called MobileXPRT. Thanks to everyone who sent in suggestions. We are testing development builds now and look forward to having a community preview available in the next few weeks.

In other news, the developer license used to build TouchXPRT expired this week. We have created a new version to fix this problem. If you are a TouchXPRT user, you’ll need to download the new version for any future testing. You can find the details here.

As we mentioned in the post Three names, two hosts, we set up a second WebXPRT hosting site to see if that would improve the slow downloads reported in China. To help us better understand the situation, we are going to start logging IP addresses for the host at http://54.251.252.204/webxprt/. We are doing this to see if there are regional differences in the download time. This change does not affect users of WebXPRT at http://www.principledtechnologies.com/benchmarkxprt/webxprt/. Neither host will gather personally identifying information.

Eric

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Posted in MobileXPRT, PhoneXPRT, TouchXPRT, WebXPRT |

Presentation XPRT

By Bill Catchings

on May 9, 2013

A few weeks ago, the Mobile PC Extended Battery Life Working Group (EBL WG) asked me to give a presentation about the BenchmarkXPRT benchmarks during one of their meetings. The group started a little over 10 years ago and is an industry organization focusing on achieving all-day battery life in mobile PC platforms.

There was a catch, of course. The meeting was this week, in Taipei. Luckily, we were able to grant the request without racking up any frequent flier miles—thanks to the wonders of technology, I was able to give the presentation remotely.

Taipei is 12 hours ahead of us here on the East Coast, so I made arrangements to give the presentation last night at 9:30 pm, making it 9:30 am the next day there—the first thing on the agenda for today. (Oh, the vagaries of time zones!)

During the one-hour session we talked about HDXPRT, TouchXPRT, WebXPRT and MobileXPRT (which, for the moment, is how we internally refer to the XPRT formerly known as PhoneXPRT). And of course, we discussed the BenchmarkXPRT Development Community. It went well, and we had some great questions from the group.

It went so well, in fact, that I’d love to do it again. I like talking about the development community and the XPRTs, and would welcome the chance to present to other groups. If you are interested or know an organization that is, you can email us at benchmarkxprtsupport@principledtechnologies.com.

Bill

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Posted in BenchmarkXPRT, BenchmarkXPRT development community, Collaborative benchmark development, HDXPRT, MobileXPRT, PhoneXPRT, TouchXPRT |

A happy coincidence

By Bill Catchings

on May 2, 2013

I love new gadgets and even the promise of new ones. Samsung just announced the specs for their upcoming Galaxy Tab 3. Initial reactions to the specs have been somewhat muted to say the least. Basically, they’ve looked at this as only an incremental improvement to the current model. The early rumors of a larger screen and bigger improvements, which turned out to be false, surely contributed to the disappointed reactions.

That being said, some sites claim that the performance of the Galaxy Tab 3 is much higher than the Galaxy Tab 2, particularly regarding graphics. We look forward to verifying these claims ourselves.

Coincidentally, this week we have been playing with an early version of PhoneXPRT (or whatever we end up calling it). So far, things are looking good. We ran it on several devices, including a Samsung Galaxy Tab 2. Like all the XPRT benchmarks, it uses real- world scenarios, which we think result in more useful and accurate results. We’ll talk more about the scenarios in the next few weeks.

It’s a very exciting time in the Android phone and tablet market. I can’t wait to try out subsequent versions of the new benchmark on the latest and greatest Android devices!

Bill

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Posted in MobileXPRT, Performance testing on tablets, PhoneXPRT, Touch-based devices |

Extreme makeover

By Eric Hale

on April 25, 2013

Last week, we unveiled redesigned Web pages for BenchmarkXPRT. We’ve been working on this redesign for a while. We think you’ll find the pages to be a lot sleeker and more attractive. The HDXPRT page, for example, is far less cluttered and easier to navigate. There’s a new white papers page. The members’ area has a new tabbed design that will let you access the member resources for any benchmark form a single page.

We will be redesigning the blog and forums over the next few weeks. Log into the forum or send an e-mail to benchmarkxprtsupport@principledtechnologies.com and tell us what you think about the new design!

As we mentioned in the blog post What a week!, WebXPRT does not collect any personally identifying information. (The WebXPRT data collection page details all the information the benchmark collects.) The benchmark does not attempt to verify that the user agent string is correct under the assumption that the user or browser had some reason for setting it the way it is.

This has caused some people to be confused when, for example, the results for a phone running the stock Android browser say that the phone used Safari. Most modern browsers have the ability to change the user agent string and misidentify themselves, as that version of the Android browser did by default. In fact, you can usually override the browser’s default, should you want to. For example, Google Chrome version 26.0, the version I’m using right now, allows you to choose from multiple versions of IE, Firefox, Chrome, iPhone, iPad, Android, and others. You can even type in a custom string.

So, if you think WebXPRT misidentified your browser, it’s worth checking the user agent string. The instructions for doing this vary by browser, but are usually pretty straightforward. If you’re curious about why browsers offer this feature, you can search for “user agent spoofing” to find explanations of the pros and cons.

Eric

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Posted in BenchmarkXPRT, HDXPRT, Principled Technologies, WebXPRT, WebXPRT 2013 results |

Three names, two hosts

By Eric Hale

on April 18, 2013

As Bill mentioned a couple of weeks ago in The Name Game, we’ve been considering changing the name of PhoneXPRT. The rationale for this is that the tests in PhoneXPRT are useful for a range of devices, from phones to tablets. We asked for your opinions about the name. After getting your input and talking amongst ourselves, we are considering three possibilities:

Leaving the name unchanged.
Changing the name to MobileXPRT. While this would convey the scope of the benchmark, some people thought the name might be too general.
Changing the name to TouchXPRT for Android. While there is some similarity between the tests in TouchXPRT and the ones we are developing for this benchmark, the two benchmarks would not initially be comparable.

Let us know what you think. We hope to settle the name question soon.

As we mentioned in Loose Ends, some users in mainland China are reporting extremely slow download times when running WebXPRT. We have set up a trial host for WebXPRT in Singapore to see if this improves the situation. Preliminary, US-based tests have seen no significant difference in scores when running from the Singapore host.

If you are in China and want to try running WebXPRT from the new host, you will find it at http://54.251.252.204/webxprt/. Please let us know your experience.

Eric

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Posted in Android, MobileXPRT, PhoneXPRT, WebXPRT |

Lies, damned lies, and statistics

By Eric Hale

on April 11, 2013

No one knows who first said “lies, damned lies, and statistics,” but it’s easy to understand why they said it. It’s no surprise that the bestselling statistics book in history is titled How to Lie with Statistics. While the title is facetious, it is certainly true that statistics can be confusing—consider the word “average,” which can refer to the mean, median, or mode. “Mean average,” in turn, can refer to the arithmetic mean, the geometric mean, or the harmonic mean. It’s enough to make a non-statistician’s head spin.

In fact, a number of people have been confused by the confidence interval WebXPRT reports. We believe that the best way to stand behind your results is to be completely open about how you crunch the numbers. To this end, we released the white paper WebXPRT 2013 results calculation and confidence interval this past Monday.

This white paper, which does not require a background in mathematics, explains what the WebXPRT confidence interval is and how it differs from the benchmark variability we sometimes talk about. The paper also gives an overview of the statistical and mathematical techniques WebXPRT uses to translate the raw timing numbers into results.

Because sometimes the devil is in the details, we wanted to augment our overview by showing exactly how WebXPRT calculates results. The white paper is accompanied by a spreadsheet that reproduces the calculations WebXPRT uses. If you are mathematically inclined and would like to suggest improvements to the process, by all means let us know!

Eric

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Posted in Benchmark metrics, WebXPRT, WebXPRT 2013 results, White papers |

Our baby has a new name!

Presentation XPRT

A happy coincidence

Extreme makeover

Three names, two hosts

Lies, damned lies, and statistics

Check out the other XPRTs: