ICPU Modernization Guide

ICPU is a tool designed to monitor and report on CPU usage within CICS applications. It periodically samples code execution to identify the specific users and processes consuming CPU resources.

ICPU is a toolset focused on performance monitoring and application development support within CICS environments. It provides insights into CPU consumption patterns to optimize application performance.

Organizations that rely on CICS for transaction processing and require detailed insights into CPU usage patterns within their CICS applications benefit most from ICPU. These are often large enterprises in sectors like banking, insurance, and retail.

A company should consider using ICPU when they experience performance bottlenecks within their CICS applications and need to identify the root causes of high CPU consumption. It is also useful for proactive performance management and capacity planning.

Alternatives to ICPU include other CICS performance monitoring tools, z/OS performance management utilities, and application profiling tools. Examples are IBM CICS Performance Analyzer, Omegamon for CICS, and Strobe.

ICPU runs on the z/OS platform and is dependent on the CICS subsystem. It operates within an LPAR and requires access to CICS regions to monitor application CPU usage.

ICPU requires a z/OS environment with CICS Transaction Server installed. It integrates with CICS regions to collect performance data. No other specific products are explicitly required, but standard z/OS utilities are necessary for operation.

ICPU uses sampling techniques to monitor CPU usage. It periodically interrupts the execution of CICS transactions to determine which code is being executed and by whom. This data is then aggregated to provide reports on CPU consumption.

ICPU likely uses configuration files to define the CICS regions to monitor, sampling intervals, and reporting parameters. The exact format and location of these files are vendor-specific.

ICPU helps organizations optimize their CICS application performance by identifying CPU bottlenecks. This leads to reduced CPU consumption, lower operational costs, and improved transaction processing efficiency.

By providing detailed insights into CPU usage, ICPU enables better capacity planning for CICS environments. This helps organizations avoid unnecessary hardware upgrades and optimize resource allocation.

ICPU integrates into existing enterprise ecosystems by providing performance data that can be used in conjunction with other monitoring and management tools. This allows for a holistic view of system performance.

ICPU's security features likely include access controls to restrict who can view and modify performance data. It may also integrate with z/OS security systems like RACF, ACF2, or Top Secret for authentication and authorization.

ICPU likely uses an access control model based on roles, where users are assigned roles that determine their permissions. This allows for granular control over access to performance data and configuration settings.

ICPU's audit logging capabilities likely track user activity, configuration changes, and access to sensitive data. These logs can be used for security auditing and compliance purposes.

ICPU is typically deployed on-premise within the z/OS environment. It requires technical expertise to configure and maintain the software. Ongoing operational requirements include monitoring the tool's performance and ensuring data integrity.

Implementing ICPU requires a strong understanding of z/OS, CICS, and performance monitoring principles. Common challenges include configuring the tool to accurately capture CPU usage data and integrating it with existing monitoring systems.

ICPU's monitoring capabilities likely include real-time dashboards, historical reports, and alerts that notify operators of potential performance issues. These features help ensure the CICS environment runs smoothly.