Apdex Is Not Just For Application Performance

Apdex is a way to study measurements of any experience that can be interpreted on a scale ranging from excellent to unacceptable. It can be used to rate everything from application response time, to food quality, surgical outcomes, time to repair, bandwidth delivered by an ISP, and time to pour a beer. The sky [...]

Apdex Is Alive!

Dear followers,

We have been silent on this website for some time. I apologize for the long lull.

Chris Loosley, an ardent voice of Apdex was silenced by his passing in May 2012. His enthusiastic energy and wit are missed.

Apdex lives on. It is a simple formula, like the area of a circle [...]

Apdex Alliance Welcomes WatchMouse

Today, the Apdex Alliance welcomes its latest sponsor. WatchMouse tests websites, services and applications utilizing an infrastructure that includes over 58 worldwide remote monitoring stations and a global network of checkpoints in 26 countries. The worldwide coverage is impressive as shown in the map below.

WatchMouse has implemented Apdex reporting in its tools. [...]

Gomez Launches Apdex-Based “User Experience Index”

It’s the busiest online shopping week of the year, and to mark it Gomez has launched a novel way to show how well retail websites are performing from a user’s viewpoint. This is a noteworthy first. Called the Compuware Gomez Retail User Experience Index (UX Index for short), this new report is much easier [...]

Apdex-G and Apdex-R Composite Sections 1-5

I’m writing a series of posts about Generalizing Apdex. This is #25. To minimize confusion, section numbers in the current spec are accompanied by the section symbol, like this: §1. The corresponding section numbers in the generalized spec documents, Apdex-G and Apdex-R, are enclosed in square brackets and prefixed by the document type, like this: [G 1] and [R 1].

Drafts of the Apdex-G spec were posted as Section [1] Introduction, Section [2] Index Overview, Section [3] Calculation Inputs, Section [4] Calculating the Index, Section [5] Reporting, and Section [6] References.

Drafts of the Apdex-R spec were posted as Section [1] Introduction and [2] Overview, Section [3] Calculation Inputs, Section [4] Calculating the Index, and Section [5] Reporting. Those posts show how the proposed Apdex-R spec is derived from the present Apdex spec.

This post consolidates the Apdex-G and Apdex-R proposals side-by-side, without annotations, allowing sections 1-5 of both documents to be viewed together.

Continue reading Apdex-G and Apdex-R Composite Sections 1-5

Apdex-R Section [5] Reporting

I’m writing a series of posts about Generalizing Apdex. This is #24. To minimize confusion, section numbers in the current spec are accompanied by the section symbol, like this: §1. The corresponding section numbers in the generalized spec documents, Apdex-G and Apdex-R, are enclosed in square brackets and prefixed by the document type, like this: [G 1] and [R 1].

Drafts of the Apdex-G spec were posted as Section [1] Introduction, Section [2] Index Overview, Section [3] Calculation Inputs, Section [4] Calculating the Index, Section [5] Reporting, and Section [6] References.

The first draft of Apdex-R began with Sections 1 and 2, Section 3, and Section 4. This post covers Section 5.

Continue reading Apdex-R Section [5] Reporting

Apdex-R Section [4] Calculating the Index

I’m writing a series of posts about Generalizing Apdex. This is #23. To minimize confusion, section numbers in the current spec are accompanied by the section symbol, like this: §1. The corresponding section numbers in the generalized spec documents, Apdex-G and Apdex-R, are enclosed in square brackets and prefixed by the document type, like this: [G 1] and [R 1].

Drafts of the Apdex-G spec were posted as Section [1] Introduction, Section [2] Index Overview, Section [3] Calculation Inputs, Section [4] Calculating the Index, Section [5] Reporting, and Section [6] References.

The first draft of Apdex-R began with Sections 1 and 2, then Section 3. This post covers Section 4.

Continue reading Apdex-R Section [4] Calculating the Index

Apdex-R Section [3] Calculation Inputs

I’m writing a series of posts about Generalizing Apdex. This is #22. To minimize confusion, section numbers in the current spec are accompanied by the section symbol, like this: §1. The corresponding section numbers in the generalized spec documents, Apdex-G and Apdex-R, are enclosed in square brackets and prefixed by the document type, like this: [G 1] and [R 1].

Drafts of the Apdex-G spec were posted as Section [1] Introduction, Section [2] Index Overview, Section [3] Calculation Inputs, Section [4] Calculating the Index, Section [5] Reporting, and Section [6] References.

The first draft of Apdex-R began with Sections 1 and 2. This post covers Section 3.

Continue reading Apdex-R Section [3] Calculation Inputs

Apdex-R Section [1] Introduction and [2] Overview

I’m writing a series of posts about Generalizing Apdex. This is #21. To minimize confusion, section numbers in the current spec are accompanied by the section symbol, like this: §1. The corresponding section numbers in the generalized spec documents, Apdex-G and Apdex-R, are enclosed in square brackets and prefixed by the document type, like this: [G 1] and [R 1].

Drafts of the Apdex-G spec were posted as Section [1] Introduction, Section [2] Index Overview, Section [3] Calculation Inputs, Section [4] Calculating the Index, Section [5] Reporting, and Section [6] References.

This post presents the first draft of Apdex-R, Sections 1 and 2. Apdex-R specifies the Apdex rules for reporting response-time measurements, therefore my first draft draws heavily on the present Apdex spec. My goal is to reformat the present spec’s rules within the context established by Apdex-G. To allow both documents to be viewed together, I show Apdex-G (draft #2, plus a few subsequent amendments) on the left, and Apdex-R (draft #1) on the right.

Differences between Apdex-R and the corresponding sections of the present spec are highlighted, as follows:

  • text deleted from the present spec
  • new text added to Apdex-R (plus a few additions to Apdex-G draft #2)
  • new text created for Apdex-G, now being repeated in Apdex-R for readability
  • notes, questions, issues to be resolved

While major deletions, additions, and changes to the present spec are marked, many minor wording changes to the present spec’s text, to improve continuity and clarity of meaning, are not marked. I believe those changes do not substantially alter the meaning and intent of the present spec.

Continue reading Apdex-R Section [1] Introduction and [2] Overview

Apdex-G Section [6] References

I’m writing a series of posts about Generalizing Apdex. This is #20. To minimize confusion, section numbers in the current spec are accompanied by the section symbol, like this: §1. The corresponding section numbers in the generalized spec, Apdex-G, are enclosed in square brackets, like this: [1].

I have been working systematically through the process of generalizing the current Apdex spec. Along the way, I have been skipping over parts of the current spec to work on the paragraphs that presented challenges. I am now going back to fill in those less contentious paragraphs, posting updated drafts of each section of the Apdex-G spec. The first five are Section [1] Introduction, Section [2] Index Overview, Section [3] Calculation Inputs, Section [4] Calculating the Index, and Section [5] Reporting; today I continue with Section [6] References.

Continue reading Apdex-G Section [6] References