Gain a deeper understanding of Dynatrace terminology and concepts.
A performance-measurement standard that shows the relationship between recorded performance measurements and real-user satisfaction. Apdex offers a uniform means of measuring how well performance meets user expectations. For full details on the Apdex standard, please visit Apdex.org. In the context of Dynatrace, Apdex is used to give you a quick and easy rating that you can use to evaluate the satisfaction of your application's end users. Apdex ratings in Dynatrace are based on application-specific thresholds. An Apdex measurement rating of
1 equates to perfect performance. An Apdex rating below
0.5 equates to poor performance. For more details about how Apdex is applied in Dynatrace, please see What is an Apdex rating?
A web application consists of web pages that are served by web servers and web containers, for example Tomcat. A web or mobile application is built upon services that process requests like web requests, web service calls, and messaging. Within Dynatrace, the term application refers to the front-end part that you can access via a browser or a mobile app.
Dynatrace monitors all of your application's services, processes, and infrastructure. By evaluating all components collectively, Dynatrace pinpoints exactly how each service contributes to the performance of your application. For example, in Java monitoring, the host, JVM, and processes are seen as a whole.
Dynatrace monitors all the individual components that applications are built upon: web requests, database requests, processes, services, and more. It's these individual components working together that collectively deliver what your end users view as a complete application. Dynatrace identifies and tracks each of these individual application components at a highly granular level. Dynatrace doesn't simply identify that a service is running on a server in a process but rather identifies all the details of these components. For example, Dynatrace can show you which of your web services is running on your Tomcat application server and how your Tomcat server's performance is affected by its host, or even your VMware vCenter server. In this way, Dynatrace gives you insight into the performance of your unique application stack, including all its components and connections.
A simulated user visit that monitors your application’s business critical workflows. Use the Dynatrace recorder to record an exact sequence of clicks and user input that you're interested in monitoring for availability and performance. Once you’ve captured the mouse clicks and additional user actions that you want your browser clickpath to include, your synthetic monitor runs automatically at regular intervals to test your site’s availability and functionality.
The equivalent of a simulated user visiting your application using a modern web browser. Browser monitors can be configured to run from any of our global locations at a frequency of up to once every 5 minutes. Browser monitors alert you when your application is inaccessible from the Internet or when baseline performance degrades significantly.
The web-based user interface that manages a single Dynatrace Managed cluster. The CMC allows you to:
- View the deployment status and configure your Dynatrace Managed cluster.
- Manage cluster nodes and Security Gateways.
- Manage your monitoring environments.
- Create user accounts and groups.
- View licensing information and consumption status.
- View audit log and cluster events.
Determining the root causes of a process crash. Dynatrace accelerates crash analysis by providing a process crash entry for each affected process and monitored host. Details available for crash analysis may include a native core dump, a Java core dump, or an abnormal program exit due to exceptions. Dynatrace also provides access to additional crash artifacts, such as
hs_err_pid files for Java crashes, text files providing Linux and Windows core dump analysis, and files containing the
Node.js exceptions that are potentially responsible for crashes.
The Dynatrace monitoring infrastructure. A cluster contains one or more cluster nodes that are set up using the Dynatrace Managed installer. After successful installation, each Dynatrace Managed cluster node runs a Dynatrace Server, a Security Gateway, and one instance of Cassandra, Elasticsearch, and nginx. Each cluster also provides a web-based management interface called a Cluster Management Console.
From the perspective of Dynatrace Smartscape environment-topology mapping, a data center is either:
- A grouping of virtual machines running in an Amazon cloud instance. Dynatrace maps Availability Zones to your data center.
- Or a set of vCenter-based virtual hosts that transmit data to Dynatrace via a single Security Gateway. You may have multiple vCenter servers or standalone ESXi hosts associated with a single data center.
Each virtual host within a data center must have Dynatrace OneAgent installed on it. You'll see at least one data center in Smartscape view if you have a Security Gateway installed. If you don't have a Security Gateway in your environment, Smartscape can't create a data center for your topology map.
Note that Dynatrace provides real-world geographic location details for data centers—look for data center location details in Smartscape and on Host pages (in the Properties pane).
The Dynatrace Artificial Virtual Intelligence System. Davis is the first digital performance assistant powered by artificial intelligence. Using an Amazon Alexa compatible device and Dynatrace artificial intelligence, you can ask Davis natural language questions about your Dynatrace environment using only your voice. The conversational interface brings Davis into the room with you, where he can serve as your virtual assistant. Davis provides data-driven answers and insights instead of raw data, and even learns who you are and customizes answers.
You can also interact with Davis through a number of other services, including Slack, and the Davis web app.
Dynatrace provides you with deep visibility into the performance of all the services that comprise your web application: web services, web containers, database requests, custom services, and more. You can even track service performance over time, with both historical and up-to-the-moment data.
The amount of time a synthetic monitor or synthetic action waits before the web application is ready to initiate another user action.
A Smartscape visualization of the hosts, processes, services, applications, and data centers in your Dynatrace monitoring environment and the relationships between those entities.
With no manual configuration, Smartscape auto-discovers all the components and dependencies of your entire technology stack end-to-end and visualizes them in an easy to understand environment topology map.
A manual action performed on a server in your environment. Events are reported by Dynatrace and, where applicable, correlated with detected problems. Examples of events include machine reboots, system shutdowns, process restarts, and new code deployments. Any manual action you perform on a server is an event, even if it's a regularly scheduled event.
Any service called by your application or another service that isn't directly monitored by Dynatrace OneAgent is considered to be an external service. Dynatrace maintains awareness of external services when they send or receive requests from your monitored services and applications. Dynatrace doesn't however receive performance data related to external services. An exception to this rule is database services. If you have Dynatrace OneAgent installed on a machine from which JDBC calls are sent to your database, Dynatrace will provide a full spectrum of performance analysis related to the called database service (even when Dynatrace OneAgent isn't installed on the database server machine itself).
The size of a host for billing purposes (based on amount of RAM). For full-stack monitoring, a host with 16 GB of RAM equates to 1 host unit. For cloud-infrastructure monitoring, a host with 16 GB of RAM equates to .33 of a host unit. For example, a host with memory size of 24 GB equates to 3 full-stack monitoring host units and .9 cloud-infrastructure monitoring host units.
Dynatrace pricing is based on host unit hours. A single host unit hour represents 1 host unit running for 1 hour. If you have a host with memory size of 24 GB (i.e., higher than 16 GB), the host will be billed at a rate of 2 host units. That host would then consume 48 host units when running for 24 hours. If you use a cloud infrastructure monitoring license for your servers, a 24 GB host running for 24 hours consumes 8 host units (24 x .3).
This Dynatrace multidimensional visual interface lets you analyze multiple dimensions of the top three findings of your application's usage. With Hyperlyzer, you can see details on where your users are located, what browser versions they're using, their operating systems, and the number of different user actions your application has received. The Hyperlyzer wheel interface enables you to quickly focus on specific dimensions of interest.
Hyperlyzer data is based on detection rules, which can be configured separately for each application.
Web requests are requests that are of particular interest in your web-application environment because they're a critical measure of the success of your business (for example, a login request or a shopping-cart checkout request) or because they provide vital technical functionality that your application relies on. Dynatrace provides advanced monitoring functionality for such key requests so that you can monitor them with extra care.
Key requests are highlighted in the Key requests section of each service overview page. This visibility is particularly valuable for low-volume, high-importance requests that would otherwise appear at the bottom of the Top requests section of a service overview page.
The intelligent evaluation of data-logging records that are produced by network devices, operating systems, applications, and other intelligent or programmable devices.
Dynatrace log analytics provides direct access to the log content of all your system's mission-critical processes and enables you to quickly search for specific log messages. You can filter log content based on keywords or analysis time frame, and even analyze multiple log files simultaneously—even when log files are stored across multiple hosts.
Most significantly, Dynatrace artificial intelligence automatically correlates relevant log messages with any problems that are detected in your environment. Any relevant log messages associated with a problem are factored into that problem's root-cause analysis.
The proactive support for Dynatrace Managed that automatically solves many common maintenance and support challenges for you. Mission Control's proactive support provides fully automated management capabilities that keep secure, reliable, and up-to-date—all while saving you from administrative tasks like upgrades and troubleshooting.
A dedicated 24x7 support team proactively handles health checks, scaling verification, upgrades, and any troubleshooting when you run into problems. This includes:
- Analyzing hardware utilization and alerting you if you need more resources.
- Addressing problems or incompatibilities with your —so you don’t need to track and react to system events.
- Optimizing your Dynatrace Managed settings to ensure optimum performance and stability.
- Collecting the required log files for problem resolution.
See How does Mission Control pro-active support work? for more information.
A host (either a VMware virtual machine or an EC2 instance) that communicates with monitored hosts in your environment, but doesn't itself have Dynatrace OneAgent installed on it. It's recommended that you install Dynatrace OneAgent on all monitoring candidates to gain full visibility and complete monitoring capabilities.
In Smartscape, a candidate is visualized with dashed circles and a generic host icon. Candidates are shown linked to relevant data centers. Each monitoring candidate is also listed on the Hosts page, within the Unmonitored category.
Any inactive monitoring candidates (those that haven't communicated with a host for more than 2 hours) aren't included in Smartscape or listed on the Hosts page.
Includes all the dashboards, charts, reports, and other tools that Dynatrace makes available for the analysis of your application or applications. A monitoring environment is analogous to an analysis server that provides all your Dynatrace application-performance analysis functionality.
You can set up multiple monitoring environments to group related entities for discrete analysis. For example, you might set up one monitoring environment to monitor and analyze the performance of your production clusters. You might set up a second environment that's dedicated to the performance of your developers' machines and a third environment for your staging servers. How you segment your monitoring environments is entirely up to you.
There are a number of variables (or dimensions) that affect application performance—most notably, geographic region, OS, browser, connection type, and user action. These are the five dimensions that Dynatrace uses to evaluate application health. Each subset of cohorts is subject to a unique set of these variables so Dynatrace measures the health of and reports on each of these user subsets separately.
Dynatrace OneAgent monitors the performance of the hosts in your application-deployment environment, along with all related processes. Based on your environment settings, Dynatrace OneAgent enables detailed performance monitoring and real user monitoring of your applications and their services. Changes to your applications, as well as infrastructure and performance problems, are reported to Dynatrace for performance monitoring.
“oneagentmon device” appears in your Windows system during Dynatrace OneAgent installation. It's used by Dynatrace for deep process monitoring. It works like a monitoring driver and allows Dynatrace OneAgent to add its own library between the operating system and the processes it's monitoring.
A special device that appears in your Windows system during Dynatrace OneAgent installation. It's indispensable for deep monitoring purposes, as it allows Dynatrace OneAgent to add its own library between the system and the monitored processes.
A service detected on the calling side by Dynatrace for which code-level visibility isn't available.
Dynatrace can detect requests of opaque services and identify which processes they're processed by, but Dynatrace can't monitor opaque services directly.
Evaluating traffic and load anomalies carries different assumptions than evaluating performance anomalies. Dynatrace uses a range of measures and methodologies to identify performance anomalies that affect customer experience and therefore require your attention. However, traffic and load anomalies are based on daily, seasonal, and business-cycle related patterns driven by an application's business model, related marketing efforts, and sociological factors. These are fairly predictable cycles that impact traffic and load as customers use your application. Examples of predictable cycles include weekends/workweeks, workday/evening hours, and customer activity occurring on an annual cycle, such as Black Friday. Because of this, Dynatrace uses a prediction-based methodology approach to detect abnormalities in application traffic and service load.
A Security Gateway that is bound to your environment, and thus only handles traffic from OneAgent instances that belong to the same environment as the Security Gateway. A private Security Gateway is downloaded from your Dynatrace environment and installed within your infrastructure.
A private Security Gateway only handles traffic from OneAgent, not from other Security Gateways. A private Security Gateway can communicate to a Dynatrace server either directly or via a public Managed Security Gateway.
A logical grouping of information in Dynatrace that includes the AI-driven analysis, environmental context, root cause analysis, and other details provided for one or more incidents in your environment. Problems can express themselves in your environment as performance degradations, improper functionality, or lack of availability. A problem can be the result of a single "event" or multiple events.
A process is an instance of an executed computer program. Processes serve as containers that host services. When you look at processes you see topology information, whereas services give you code-level insight. For example, you might have a Tomcat process that hosts a web application in the form of a server-side service. While processes are host-centric—associated with a single machine in your environment—services are request-centric and therefore typically span across multiple machines in a data center.
A set of processes that perform the same function across multiple hosts. For example, you might have a cluster of servers with each server running the same process in support of multiple hosts.
An assessment of process health based on response-time metrics that measure how long it takes to react to requests from other processes or clients (regardless of resource consumption).
Real user monitoring analyzes the experience that your customers have while interacting with your application. Real user monitoring is a combination of web analytics and performance measurements that build a picture of how well your customer-facing components perform.
The time it takes for a service to execute and complete a task.
The Dynatrace AI-driven process for understanding why detected problems occurred, along with guidance for resolving the underlying causes of problems.
Dynatrace identifies performance problems before your customers are affected by them and prioritizes problems based on customer impact, providing instant insight into problem severity and user experience impact. When Dynatrace discovers performance problems, it provides you with a single problem notification that identifies the root cause of the problem so you don’t have to manually interpret dozens of data sources to figure out what needs to be fixed.
Because performance problems are seldom isolated events (they're usually symptoms of larger issues), Dynatrace artificial intelligence can analyze up to billions of events that occur within your IT environment to help you address the causes of problems, not the symptoms. Dynatrace root cause analysis also streamlines bug fixing through deep-dive analysis into source code and database statements, letting you cut down mean time to repair by 90% or more.
A Dynatrace component that provides secure and reliable communication with cloud-based Dynatrace cluster nodes. Similar to a proxy, Security Gateway reduces bandwidth requirements by encrypting and compressing network communication. It also provides monitoring of virtual infrastructure. Stopping or disabling Security Gateway reduces the monitoring capabilities of hosts that use Security Gateway to communicate with Dynatrace clusters.
Web and mobile applications are built upon services that process requests like web requests, web service calls, and messaging. For example, the web requests that are sent to a specific Tomcat server are an example of a server-side service. Such services can take the form of web services, web containers, database requests, custom services, and more. Services may in turn call other services such as web services, remote services, and databases services.
Processes are essentially containers that host services. When you look at processes you are looking at topology information, whereas services can provide code-level insights. For example, you might have a Tomcat process that hosts a web application in the form of a server-side service. While processes are host-centric—associated with a single machine in your environment—services are request-centric and therefore typically span across multiple machines in a data center.
Server-side code executed within a process group.
A visualization of all the services that send requests to a specific back-end service. More than just showing which services directly call a specific back-end service, Service backtrace shows you the sequence of service calls that leads up to each request, all the way back up to the browser click that triggered the sequence of calls.
An easy-to-read report that summarizes the monitoring insights that Dynatrace has compiled over the past week. Service quality reports are structured in such a way that even non-technical team members can understand them. Reports calculate how well your monitored components perform and provides scores for the following areas:
- Overall environment
Service quality reports give you insights into hot spots in your environment and make it easy to share insights with others.
Using proprietary Smartscape technology, Dynatrace is able to automatically discover your entire application stack, from the data centers, hosts, and processes that comprise your infrastructure and network, through the services that comprise your applications, and extending all the way up to your applications. Dynatrace even discovers and maps all of the dependencies of these components, in real time. Dynatrace then presents its findings to you in an interactive Smartscape topology map. You can click anywhere within a Smartscape visualization to view performance statistics for each discovered entity in your environment.
The equivalent of a simulated user action. When a Browser clickpath triggers the loading of a new page or an XHR request, Dynatrace monitors the availability and performance of that action.
Application availability and performance can be experienced differently by different customers around the world at any given time. Dynatrace Synthetic monitoring makes it easy for you to monitor application availability and performance as your customers experience it, around the world and around the clock. Synthetic monitoring proactively simulates user visits even when no users are currently visiting your site. Synthetic monitoring provides 24x7 global visibility into your web applications by driving real web browser sessions with full HTML5/Ajax support.
The analysis time-frame selection tool that's in the upper-right corner of all Dynatrace pages and views. the time frame selector enables you to filter monitoring data down to a specific time range. Previous and Next buttons enable you to move forward and backward in time based on pre-defined increments (
1 week, etc.). Selected time frames remain persistent even when you move between pages and views.
Actions your customers perform within your application. User actions equate to common user activities such as performing a search, viewing an account balance, viewing items in a shopping cart, or ordering a product. User actions vary based on the features of your application.
The duration of a user action is called action duration. This represents the time that the user must wait before they can proceed. So a low action duration is better than a high action duration. For more details, see What are user actions?.
One or more user actions that comprise an interaction between a user’s browser and your application. User sessions (aka, "user visits") end when the user’s browser closes or is inactive for 30 minutes. Note that bounced sessions (sessions with only a single action) don't count against your licensed session quota.
Dynatrace typically shows all the sessions of each individual user, even when those sessions are anonymous (non-authenticated users identified with browser cookies) or when a user tag has been edited or deleted. For mobile apps, Dynatrace identifies individual users based on the specific mobile device they use. For web applications, user identification is achieved by storing a persistent cookie within each user’s browser. Cookies enable Dynatrace to assign even anonymous user sessions to known users. As long as a user has logged into your application at least once, you can search for and identify that user, even when the user accesses your application within anonymous, unauthenticated sessions. This is particularly useful for analyzing periods of time when a user may not have been able to log into your application due to an issue with your authentication service.