Collected thoughts about software and site performance ...
Web performance matters. Responsive sites can make the online experience effective, even enjoyable. A slow site can be unusable. This site is about online performance, how to achieve and maintain it, its impact on user experience, and ultimately on site effectiveness.
Home | Entries about Reporting on Performance (5), in reverse date order:
Web Analytics Vendors Adapt to Web 2.0
Most hosted Web Analytics vendors charge you according to page views -- not unreasonable since each view is a call to their server and a new record in their database. But what happens when Ajax and other rich applications eliminate the notion of a "page"?
That's from Web 2.0 Changes Web Analytics Pricing Models, a recent post by Phil Kemelor in CMP's Intelligent Enterprise Weblog. Describing how he sees Web Analytics (WA) vendors adapting to Web 2.0, Phil continues ...
Chris Loosley
in Articles and White Papers, Measuring Performance, Reporting on Performance, Rich Internet Applications, Blogs and Publications, Web Analytics, Web 2.0
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Lies, Damned Lies, And Statistics
The Law of Measurements
The result of any measurement will depend upon what is measured, how the measurement is done, and how the results are computed
Recent posts have discussed some insightful statements about the importance of measurements by Lord Kelvin, Grace Hopper, Tom DeMarco, and Tom Gilb.
In the last of these, I concluded that Gilb's observation (Anything you need to quantify can be measured in some way that is superior to not measuring it at all) gets across the value of measurements without making any claims that are too far-reaching or contentious.
A follow-up comment and the ensuing conversation with Ben Simo -- author of Quality Frog, a blog about software testing and software quality -- reminded me of this post, which I'd been meaning to complete and publish for a while. I'll explain the reasons for the delay below.
Chris Loosley
in Foundations of Performance, Measuring Performance, Reporting on Performance, Performance Wisdom
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Reporting Web Application Responsiveness
In a previous post, I discussed some complications of measuring Rich Internet Applications (RIAs). In particular, I concluded that to report useful measurements of the user experience of response times, …
Chris Loosley
in Measuring Performance, Reporting on Performance, Rich Internet Applications
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The ABC's of Measurement Data
In my experience, companies usually have lots of measurement tools. Granted, some of them do sit on the shelf unused, but many are in use -- some even collecting data continuously. Despite all this data gathering, the value obtained from the data is often a lot less than it might be. Data is meaningless unless it's interpreted and applied; as a medieval scribe might have said, graecum est; non potest legi. Today I will describe a framework for addressing this concern.
Chris Loosley
in Performance Management, Measuring Performance, Reporting on Performance
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Apdex: Application Performance Index
Yesterday I introduced the subject of Web Performance Management. [Note: I have since rewritten that material as the Performance Topics page]. To manage application service levels effectively, and satisfy your customers, you must monitor and report on availability and response times. So if you collect 10,000 measurements, what's the best way to report them?
Chris Loosley
in Standards (Apdex, ITIL, etc.), Reporting on Performance
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