Today the Apdex specification is entirely focused on application response time. Its first paragraph defines Apdex as “a method for calculating and reporting a metric of transactional application response time in the form of an index with a value of 0 ...

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"Web Performance Matters" - 5 new articles

  1. Generalizing The Apdex Standard [2]
  2. Apdex as a (Key) Performance Indicator
  3. Measuring Mobile Web Sites
  4. Choosing Performance Management Tools
  5. Service Level Management with Apdex
  6. More Recent Articles

Generalizing The Apdex Standard [2]

Illustration: Apdex Logo

Today the Apdex specification is entirely focused on application response time. Its first paragraph defines Apdex as “a method for calculating and reporting a metric of transactional application response time in the form of an index with a value of 0 to 1.” But in reality, the Apdex method has much wider applicability. A more appropriate description might be the general statement that Apdex is a metric that reflects the degree to which a set of performance measurements achieves...

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Apdex as a (Key) Performance Indicator

Illustration: Apdex Logo

On the Apdex Exchange blog, I’m writing a series of posts about Generalizing The Apdex Standard. The ideas I developed (together with any public input) will evolve into a new draft of the Apdex specification. The latest post is on Apdex as a (Key) Performance Indicator. Here's a brief introduction:

Metrics, Performance Indicators, and KPIs

If you spend more than a few minutes learning about Key Performance Indicators, you will surely read words like these: All KPIs are metrics,...

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Measuring Mobile Web Sites

Illustration: Web Analytics Report

The methods commonly used to measure Web sites often don't work for mobile sites, because of differences among mobile platforms and devices. The biggest obstacles are lack of support on mobile devices for Cookies, JavaScript, and client IP addresses.

The Wikipedia article on Mobile Web Analytics provides a succinct introduction to these and other challenges -- see the section on "Problems with tracking visitors, visits and clickpaths in the Mobile Web". Because of these limitations, the...

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Choosing Performance Management Tools

Illustration: Apdex Logo

With over 30 application performance management (APM) tool vendors offering scores of products, buyers face hundreds of confusing choices. Compounding the problem, the lack of a common taxonomy, or standard APM nomenclature, makes cross-vendor product comparisons especially challenging.

To address this challenge, NetForecast has developed an APM tools framework anyone can use to define APM requirements and map them to vendor offerings. On June 30 2010, Peter Sevcik will describe this...

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Service Level Management with Apdex

Illustration: Apdex Logo

Service level management (SLM) is the art and science of keeping application services running properly once in production. The key to successful SLM is the ability to use metrics or performance indicators that are linked to the business.

Apdex (Application Performance Index) is an open standard that is a numerical measure of user satisfaction with the performance of enterprise applications. It converts many measurements into one number on a uniform scale of 0-to-1 (0 = no users satisfied,...

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