Page 526 - Handbook of Modern Telecommunications

Network Organization and Governance 4-57

WEB-Server
with application
agent
Remote end-to-end response time
Intranet response time
Application-Server Application-Server
with ARM
with ARM Database-Server
with application
agent
R M Intranet M R
Application agent

PC running
synthetic workload
ARM Console

End-to-end
PC running PC with packet M Monitoring TCP/IP packets response time
synthetic workload monitoring software R Router
FIGu RE 4.4.2 Positioning response time measuring tools.

into an application so that network managers and Web masters can monitor it for a range of per-
formance metrics, including response time. It is a complete offer to application management, but
it requires rewriting of existing code, which many companies are unwilling to do.
Figure 4.4.2 shows the locations of these tools and agents.
When evaluating products, many components must be considered. These factors are:
• Customization needs
• Maintenance requirements
• Deployment of code
• Overhead of transmitting measurement data
• Load increase due to synthetic workload
• Reporting capabilities
• Capabilities to solve complex performance problems
• Capabilities to conduct root-cause analysis
• Combination with modeling tools
• Price of the tools
Critical success factors for measuring and reporting of response time are:
• Measurement procedures
• Availability of application MIBs
• Proactive tools
• Workforce with dispatch capabilities
• Efficient help desk
• Skill and experience of subject matter experts
The pressure on service providers and network operators is increasing. Some guidance for metrics has
been recently published by them. Examples are:
• Minimal network delay 70 to 100 ms