Welcome!

Containers Expo Blog Authors: Elizabeth White, Liz McMillan, Yeshim Deniz, Pat Romanski, Zakia Bouachraoui

Related Topics: @DevOpsSummit, Microservices Expo, Containers Expo Blog

@DevOpsSummit: Blog Feed Post

Trend Shift Analysis | @DevOpsSummit #DevOps #APM #Monitoring

In performance monitoring, trend, or trend shift, is a key metric that is used to indicate change

Trend Shift Analysis
By Pradeep Thalanki and Ankur Vishwakarma

‘Trend’ is a pretty common business term, but its definition tends to vary by industry. In performance monitoring, trend, or trend shift, is a key metric that is used to indicate change.

Why is trend shift important?
Change is inevitable. Today’s websites must frequently update and change to keep up with competition and attract new users, but such changes can have a negative impact on the user experience if not managed properly. The dynamic nature of the Internet makes it necessary to constantly monitor different metrics. One of the biggest challenges in performance monitoring the lack of clarity when configuring alerts. Alerts that are set up using the wrong configuration can lead to an overabundance of false positive alerts or no alerts at all, which results in an increased MTTR.

Webpage response is an important metric that affects end-user experience. If the page takes too long to load, the user gets frustrated and will likely abandon the webpage. A high page load time can be caused by several issues, some of the common problems are:

  1. The server that delivers the page content is unable to handle a surge in requests
  2. The webpage has too many third-party ads/images
  3. The network is sluggish due to maintenance

Monitoring webpage response values or keeping track of the trend shift can help identify any unusual webpage behavior and to ensure a positive user experience.

This is just one of the many scenarios where analyzing trend shift can be valuable. Trend shift alerts are also useful in:

  • Detecting trend shifts on specific ISP or region or city
  • Multi hosting or multi CDN environment

When can you use trend shift?
Trend shift alerts can be set up for metrics that are prone to constant variations in their values. In the image below, a trend shift was detected on July 18 at around 16:00, which continued for about 24 hours. Later, it returned to normal, indicating that the root cause was identified and fixed.

When is trend shift irrelevant?
Trend shift can be detected when there is a sudden change (for a few consecutive runs) in the usual pattern. But if this change is gradual rather than sudden, then trend shift cannot detect the problem. In such cases, warning and critical alerts should be set up for a specific value.

In the image below, we see that the webpage response has increased gradually. The webpage response is around 2500ms in the beginning and increased to around 3500ms over two days’ time. Trend shift alert is not triggered here as the value increased gradually.

Trend shift alerts using Catchpoint
Clients can configure trend shift alerts using Catchpoint; the alerts will help them take necessary action so that end-user experience is not affected.

Below is where you will find the trend shift alerts displayed:

  1. Smartboard page
  2. Alert Log page

Trend shift alerts in the Smartboard page
The assistant widget section in the Smartboard page displays trend shifts. The Smartboard page has been developed using artificial intelligence (intense computing algorithms) that detects the trend shifts. It computes the trend shift for the test time metric (total time taken to complete the test). The Smartboard page does not require any additional configuration to display the trend shift information.

Trend shift alerts in alerts Log
A trend shift alert is triggered and displayed in the alerts log page only after it has been configured in the test properties. Trend shifts can be detected for:

  1. Timing metrics – test time, DNS, send, wait, DOM load, etc.
  2. Ping metrics – ping packet loss, ping RTT
  3. Request metrics – #Requests, #Connections, #Redirects, #Images, #Scripts, #CSS, etc.
  4. Zone metrics – self downloaded bytes, %Self Bottleneck, %Third party bottleneck, etc.

Configuring trend shift alerts
Alerts can be set up in the advanced alerts section in the test properties page as shown below. The default recipients will be notified by an email when a trend shift is detected for the metric it was configured.

Where to find trend shift alerts?
The alerts log page displays a list of alerts; it can be filtered for specific tests and alert types (metric based) for a specified time interval.

How is Trend Shift alert different from other alert types?
For regular alerts, the user should configure the values over/below which an alert should be triggered. In the case of trend shift, however, the user should select the metric to be monitored for trend shift. Trend shift is based on historical comparison, therefore there is no need to set any specific values.

Advantages of trend shift analysis
Let’s take a real scenario where trend shift analysis can be critical. Ecommerce companies rake in major business during the annual sales like Black Friday and Cyber Monday. On such days, these websites experience a rapid hike in traffic with customers rushing in to grab the best deals. The servers managing the website may slow down considerably with the influx of requests. In the image below, we can see that the webpage response shot up during a special discount sale.

Trend shift detects such spikes in the webpage response and helps businesses identify the root cause of the issue. It can provide a lot of data around the incident such as:

  1. Identifying the city with the most number of users
  2. Identifying whether the ISP (Internet Service Provider) was capable of handling the load
  3. Building a better infrastructure so that the load is distributed

Summary
Trend shift signals a change in the website performance. It provides a starting point to analyze the change (increase/decrease) in the metric being monitored. Performance analysts can use this data to identify the root cause and take corrective measures if necessary. Proactively identifying and fixing the issue will improve the user experience and have a positive impact on the company’s revenue.

The post Trend Shift Analysis appeared first on Catchpoint's Blog - Web Performance Monitoring.

Read the original blog entry...

More Stories By Mehdi Daoudi

Catchpoint radically transforms the way businesses manage, monitor, and test the performance of online applications. Truly understand and improve user experience with clear visibility into complex, distributed online systems.

Founded in 2008 by four DoubleClick / Google executives with a passion for speed, reliability and overall better online experiences, Catchpoint has now become the most innovative provider of web performance testing and monitoring solutions. We are a team with expertise in designing, building, operating, scaling and monitoring highly transactional Internet services used by thousands of companies and impacting the experience of millions of users. Catchpoint is funded by top-tier venture capital firm, Battery Ventures, which has invested in category leaders such as Akamai, Omniture (Adobe Systems), Optimizely, Tealium, BazaarVoice, Marketo and many more.

IoT & Smart Cities Stories
Cloud-enabled transformation has evolved from cost saving measure to business innovation strategy -- one that combines the cloud with cognitive capabilities to drive market disruption. Learn how you can achieve the insight and agility you need to gain a competitive advantage. Industry-acclaimed CTO and cloud expert, Shankar Kalyana presents. Only the most exceptional IBMers are appointed with the rare distinction of IBM Fellow, the highest technical honor in the company. Shankar has also receive...
DXWorldEXPO LLC announced today that ICOHOLDER named "Media Sponsor" of Miami Blockchain Event by FinTechEXPO. ICOHOLDER gives detailed information and help the community to invest in the trusty projects. Miami Blockchain Event by FinTechEXPO has opened its Call for Papers. The two-day event will present 20 top Blockchain experts. All speaking inquiries which covers the following information can be submitted by email to [email protected] Miami Blockchain Event by FinTechEXPOalso offers sp...
DXWordEXPO New York 2018, colocated with CloudEXPO New York 2018 will be held November 11-13, 2018, in New York City and will bring together Cloud Computing, FinTech and Blockchain, Digital Transformation, Big Data, Internet of Things, DevOps, AI, Machine Learning and WebRTC to one location.
@DevOpsSummit at Cloud Expo, taking place November 12-13 in New York City, NY, is co-located with 22nd international CloudEXPO | first international DXWorldEXPO and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time t...
Headquartered in Plainsboro, NJ, Synametrics Technologies has provided IT professionals and computer systems developers since 1997. Based on the success of their initial product offerings (WinSQL and DeltaCopy), the company continues to create and hone innovative products that help its customers get more from their computer applications, databases and infrastructure. To date, over one million users around the world have chosen Synametrics solutions to help power their accelerated business or per...
When talking IoT we often focus on the devices, the sensors, the hardware itself. The new smart appliances, the new smart or self-driving cars (which are amalgamations of many ‘things'). When we are looking at the world of IoT, we should take a step back, look at the big picture. What value are these devices providing. IoT is not about the devices, its about the data consumed and generated. The devices are tools, mechanisms, conduits. This paper discusses the considerations when dealing with the...
Charles Araujo is an industry analyst, internationally recognized authority on the Digital Enterprise and author of The Quantum Age of IT: Why Everything You Know About IT is About to Change. As Principal Analyst with Intellyx, he writes, speaks and advises organizations on how to navigate through this time of disruption. He is also the founder of The Institute for Digital Transformation and a sought after keynote speaker. He has been a regular contributor to both InformationWeek and CIO Insight...
Machine learning has taken residence at our cities' cores and now we can finally have "smart cities." Cities are a collection of buildings made to provide the structure and safety necessary for people to function, create and survive. Buildings are a pool of ever-changing performance data from large automated systems such as heating and cooling to the people that live and work within them. Through machine learning, buildings can optimize performance, reduce costs, and improve occupant comfort by ...
Digital Transformation is much more than a buzzword. The radical shift to digital mechanisms for almost every process is evident across all industries and verticals. This is often especially true in financial services, where the legacy environment is many times unable to keep up with the rapidly shifting demands of the consumer. The constant pressure to provide complete, omnichannel delivery of customer-facing solutions to meet both regulatory and customer demands is putting enormous pressure on...
Bill Schmarzo, Tech Chair of "Big Data | Analytics" of upcoming CloudEXPO | DXWorldEXPO New York (November 12-13, 2018, New York City) today announced the outline and schedule of the track. "The track has been designed in experience/degree order," said Schmarzo. "So, that folks who attend the entire track can leave the conference with some of the skills necessary to get their work done when they get back to their offices. It actually ties back to some work that I'm doing at the University of San...