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Going Beyond the Device Heart Beat
Balwinder Kaur, Principal Software Engineer
OpenIoTSummit, San Diego, Apr 4, 2016

Agenda
Copyright © 2015 AppDynamics. All rights reserved. 2
• Introduction
• The Basics
• An IoT World
o Device Visibility
o Application Visibility
• Best Practices for End to End Performance Monitoring
• Unique Challenges of IoT
• Q&A
• Summary
Disclaimer
"Opinions expressed are solely my own and do not express the views or opinions of my employer."

Connected Things Disrupt Business Models
Oslo Smart Lighting

“IoT devices directly, or
indirectly, impact the
bottom line of a business."

Making the headlines

How do I prevent an NYT
moment?

What is an IoT Device?
Traditional Embedded Device
+
Connectivity
+
Cloud Services

Are all IoT “Things” equal?
• No
• A very fragmented space
• Classify to manage
Gateway
Endpoints
w/
Routing
Endpoints
w/o
Routing
Sensor Rich |Touches the Physical WorldDigital

IT Teams Monitor Cloud Services
Infrastructure Monitoring
• Server Monitoring
• Network Monitoring
Application Performance
Monitoring (APM) Systems
• Web applications & containers
• Database Performance
• Byte Code Injection is popular
Log Files Crash Reports

Application Performance Monitoring System
“One of the most important steps in any application performance
monitoring initiative is combining data from disparate monitoring
"silos" into a correlation engine and dashboard. The dashboard
makes data logs easier to read and saves IT staff from memory-
dependent and error-prone manual correlation and analysis.”
• Source: http://searchenterprisedesktop.techtarget.com/definition/Application-
monitoring-app-monitoring

End to End IoT Solution Architecture Diagram

End to End Monitoring
• Performance monitoring must be extended to cover the IoT
Devices
IoT Device Cloud Services
End to End Reliability

IoT Device
Visibility
Device
Management
Systems
Device
Management
Device Health
Application
Performance
Management
Application Health
(on device)
Application Health
(transactions)
Not
operational
data
On device;
closely
related
Main Focus
Area

Device Health
System Performance
 CPU Usage
 Memory Usage
 Power Level
 Uptime
 Disk I/O
 Network Health
 Location Information
Fast Moving Data
Device Configuration
 OS
 Model
 Manufacturer
 Hardware, Firmware, S/W
Version
Slow Moving Data

End to End Reliability
Application Transaction Health
1) Calls per minute
2) Errors per minute
3) Latency (in milliseconds)
4) Crash Reporting
Measurement Metrics

Two Classes of Problems
 Transaction Health is good
 Device Health is
deteriorating
 Device Health is good.
 Transaction Health is poor
 Network Problems
 S/W Version mismatch
 S/W- H/W version mismatch
Device Management System
Application Performance
Management Systems

Key Performance Indicator - MTTR
24
.
Trapped
Metrics
Manual
Correlation
Manual
Remediation
Copyright © 2015 AppDynamics. All rights reserved.
Major Reasons Contributing to
a Poor MTTR (Mean-Time-to-Resolution)
Gap
between
Operations
and
Engineering

Unified Dashboard
Unified Monitoring
Device Health Application Health
Infrastructure
Health
Device Management Systems APM Systems

End-to-End Performance Monitoring
Best Practices for IoT

Top Five Features
Performance
Correlation
Remediation
Analytics
Availability

Device Side Instrumentation
Capture and
report Device
Metrics
Capture and
report Device
Events

Unified Monitoring System
Aggregates
Metrics and
Events
Correlates
Events
Alerts Remediates

Unique Challenges that IoT brings
(aka devil is in the details)

Choosing Instrumentation Agents for IoT Devices
Web Agent Embedded Agent
Message Payload Format JSON ProtoBuf, CBOR. BSON
Application Layer HTTP/HTTPS MQTT/MQTT-SN, CoAP
Security TLS DTLS
Transport Layer TCP/UDP UDP
Network Layer IPv4/IPv6 IPv6/ 6LowPAN
Link Layer Ethernet, 802.11 802.15.4

Choosing Instrumentation Agents for IoT Devices (contd)
• Small static and runtime memory footprint
• Small disk usage.
• Meets or exceeds security requirements of the
IoT Device
• Support for your favorite programming
language.

Open Source Solutions
• Prometheus.io :Open-source service monitoring system & time series database
• Influxdata.com: Platform for managing, storing and visualizing time series data
• Graphite : Real-time graphing system for numeric time-series data.
• Graphana: Popular visualization library for multiple Time Series backends.
• Plethora of open source tools to monitor performance or Device Health
o top, vmstat, lsof, tcpdump , htop, iotop, monit, nagios, vmstat,
perf_events
• Tracing Tools like dtrace, LTTng (Open source tracing framework for Linux.)

Questions, Comments or Feedback

Best Practices
 Monitor Device Health
 Understand what device data is important
 Understand what device applications are important
 Monitor End Devices and Gateways
 Monitor Application Transactions Health
 Monitor Cloud Services
 Embedded Agents should meet power, security and privacy requirements
 Unified View of the world reduces MTTR

A Heart Beat is Important.
But do not be on Life Support.
Stay IoT Healthy!
balwinder.kaur@appdynamics.com

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Going Beyond the Device Heart Beat

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