APM and Viewpoints - Part 2
February 23, 2017

Terry Critchley
Author of "Making It in IT"

Share this

An important aspect of performance (and other) monitoring is where the observer stands when looking at the IT scenario. Each participant has a different view of what is bad performance - network, database, web, system, user personnel, management and external people - customers, regulatory bodies etc. These are what I call viewpoints, a popular concept in IT architecture design methods.

Start with APM and Viewpoints - Part 1

Operations Viewpoint

Operations people, but not the business user and others, will be desperately interested in:

■ % Utilizations

■ Wait times

■ Disk space used

■ Disk I/O Throughput

■ Disk I/O response time

■ Memory % used

■ Page rate

■ etc. etc.

End User Viewpoint

The previous factors are meaningless to the user of the application, who is more interested in:

■ Response times ( which depends on overall latency, percentiles, variations but they are not interested in that detail)

■ Variability of that response; large variations equal poor productivity via irritation and loss of concentration

■ Throughput of work where applicable

■ Availability

■ Other "speed" factors relating to their work

Business Manager Viewpoint

This viewpoint might reflect that of the end user is some respects, but will often be even more general:

■ What is the time between receipt of an order, shipment, invoicing and reconciliation?

■ Is the customer satisfied with this?

■ Can we speed up the processes without excessive cost?

■ Other business aspects

There are other people who will have different requirements and perspectives of performance: service desk, external customers, especially website users, and possibly regulatory bodies. They are important and in performance life, one size does not fit all.

The Outcome

When considering performance management, which is more than simply monitoring, the differing requirements (viewpoints) of various stakeholders needs to be taken into account. It is often difficult to retrofit analysis of performance data to cater for people not considered at the design stage. You may be asked by the CEO, out of the blue: "Why do we take 2 days to issue an invoice after shipment while competitor X takes one?"

Role of the SLA

Whose level of service (quality of service, QoS) are we talking about? Basically, all the types of person outlined above. This (rather these) QoS are usually formalized in a Service Level Agreement or SLA. This will dictate what needs to be measured and analyzed:

"If you can't measure it or derive it, you can't report it."

"A service-level agreement (SLA) is a contract between a service provider and its internal or external customers that documents what services the provider will furnish and defines the performance standards the provider is obligated to meet." [WhatIs.com].

The trick here is to marry these viewpoints which means translating the operational data into service level agreement (SLA) terms and hence into stakeholder perspective, another word for viewpoint All this is complicated when one moves from the relatively simple classical IT environment to the mixed web and application environments, rendered even more difficult to fathom by virtualization and clouds.

The Endpoint

There is no reason why external customers shouldn't be part of any SLA drawn up if the APM setup is designed to cover all important stakeholders.

In addition, it should be transparent to the stakeholders outside operations whether the system runs native, virtualized, in a cloud or in a series of school exercise books. The APM design with these differing viewpoints in mind is the key aspect of this.

Dr. Terry Critchley is the Author of "Making It in IT", "High Performance IT Services" and “High Availability IT Services”.

This blog was created from extracts from Terry Critchley's book: High Performance IT Services [ August 25 2016]

Share this

The Latest

September 21, 2017

The increased complexity of new computing architectures coupled with new application development methodologies – especially in the face of time-to-market and security threat pressures – should make secure UX the first strategic decision for CEOs and CFOs on the path to digital transformation ...

September 19, 2017

IT professionals tend to go above and beyond the scope of their core responsibilities as the changing business landscape demands more of their attention, both inside and outside of the office, according to the Little-Known Facts survey conducted by SolarWinds in honor of IT Professionals Day ...

September 18, 2017

Digital video consumption is viral and, according to a new study released by IBM and International Broadcasting Convention (IBC), more than half of the 21,000 consumers surveyed are using mobiles every day to watch streaming videos, and that number is expected to grow 45 percent in the next three years ...

September 15, 2017

No technology that touches more than one IT stakeholder, no matter how good and how transformative, can deliver its potential without attention to leadership, process considerations and dialog. In this blog, I'd like to share effective strategies for AIA adoption ...

September 14, 2017

Enterprise IT environments are becoming more heterogeneous and complex, with fragmentation permeating cloud infrastructure, tooling and culture, according to a survey recently conducted by IOD Cloud Technologies Research in partnership with Cloudify ...

September 12, 2017

One area that enables enterprises to reduce complexity and streamline operations is their virtual desktop infrastructure (VDI). Virtualization is a linchpin of digital transformation and effectively optimizing an enterprise's VDI is essential to moving forward with digital technologies. Delivering the best possible VDI performance means taking a fresh look at what "desktop" means today. The endpoint, or desktop, now can be a physical thin client, a software-defined thin client, a traditional laptop, a phone or tablet. To reduce operational waste and achieve better performance across the desktop environment, consider these five actions ...

September 11, 2017

In incident management, we often overlook the simple things in favor of trying to do too much, too soon. Why not make sure we've done the fundamentals properly? ...

September 08, 2017
For our Advanced IT Analytics (AIA) Buyer's Guide, we interviewed more than 20 deployments to help us better assess vendor strengths and limitations. So given the abundance of riches to work with, I've decided to illustrate several of the more prominent AIA benefit categories with actual real-world comments ...
September 07, 2017

The Input/Output Operations per Second (I/O) capabilities of modern computer systems are truly a modern wonder. Yet no matter how powerful the processors, no matter how many cores, how perfectly formed the bus architecture, or how many flash modules are added, somehow it never seems to be enough ...

September 06, 2017

By taking advantage of performance monitoring, IT and business decision makers can gain better visibility into their cloud and application performance. Dedicated performance monitoring has become essential for providing visibility into all areas of application performance and keeping the business running optimally ...