How does CA Quickfetch accelerate load module processing?

CA Quickfetch intercepts load requests and checks if the requested module is already in memory. If it is, the module is loaded directly from memory, bypassing the normal load process. If not, the module is loaded from disk and then copied into memory for subsequent requests.

What configuration files are used by CA Quickfetch?

The configuration files used by CA Quickfetch define which load libraries are eligible for dynamic caching and specify parameters such as the maximum amount of memory to use. These files are typically maintained by system programmers.

Does CA Quickfetch expose any APIs?

CA Quickfetch uses standard z/OS system services for memory management and load module processing. It does not typically expose external APIs for direct integration.

What are the main system components of CA Quickfetch?

The main components of CA Quickfetch include the intercept routine (which intercepts load requests), the memory manager (which manages the in-memory copy of load modules), and the ISPF interface (which provides performance monitoring).

What is the business value of using CA Quickfetch?

By reducing load processing time, CA Quickfetch can improve application response times and overall system performance. This can lead to increased user productivity and reduced operational costs.

How does CA Quickfetch reduce CPU utilization?

CA Quickfetch can help reduce CPU utilization by minimizing the number of disk I/O operations required to load modules. This can free up CPU resources for other tasks.

How does CA Quickfetch improve application startup times?

Faster application startup times can improve the user experience and reduce the time it takes to complete business transactions.

What authentication methods are supported by CA Quickfetch?

CA Quickfetch relies on the security mechanisms provided by z/OS. It does not introduce its own authentication methods.

How is access to CA Quickfetch secured?

Access to the ISPF interface and the ability to modify CA Quickfetch configuration files should be restricted to authorized personnel only. This can be achieved through standard z/OS security controls.

Is data encrypted in CA Quickfetch?

CA Quickfetch does not encrypt load modules in memory. The security of the load modules relies on the underlying z/OS security mechanisms.

What audit/logging capabilities exist in CA Quickfetch?

CA Quickfetch logs events related to load module caching and retrieval. These logs can be used for auditing and troubleshooting purposes.

How is CA Quickfetch administered?

CA Quickfetch is administered through configuration files and the ISPF interface. The configuration files define the parameters for dynamic caching, while the ISPF interface provides monitoring and control functions.

How is user management handled in CA Quickfetch?

User management is handled through standard z/OS security mechanisms. CA Quickfetch does not have its own user management system.

What are the main configuration parameters for CA Quickfetch?

Key configuration parameters include the maximum amount of memory to use for caching, the list of load libraries to include in the cache, and the criteria for determining which modules to cache.

What monitoring/logging capabilities exist in CA Quickfetch?

CA Quickfetch provides logging and monitoring capabilities through the ISPF interface. This allows administrators to track the performance of the cache and identify any issues.

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CA Quickfetch

Name: CA Quickfetch
Availability: InStock

Broadcom Supported z/OS

Program and Load Libraries Performance

Vendor

Broadcom

Product Overview

CA Quickfetch is a z/OS component that enhances application performance through dynamic caching of load modules. The architecture includes an intercept routine that intercepts load requests, a memory manager that manages the in-memory cache, and an ISPF interface for monitoring and control. The intercept routine checks if a requested module is in memory; if so, it's loaded directly from the cache.

Otherwise, it's loaded from disk and added to the cache. The memory manager allocates and deallocates memory for the cache. Configuration is performed via configuration files, specifying load libraries and memory limits.

CA Quickfetch leverages z/OS security for authentication and authorization. Communication between components is primarily through z/OS system services. It integrates with CA PMO for comprehensive performance management.

While z/OS VLF provides similar caching functionality, CA Quickfetch is specifically designed for load modules, offering focused optimization. Key metrics to monitor include cache hit ratio, CPU utilization, and I/O reduction. Competing products include IBM's z/OS VLF; Quickfetch focuses specifically on load modules.

Frequently Asked Questions

What is the primary function of CA Quickfetch?

CA Quickfetch dynamically copies frequently used load modules into memory, reducing load processing time. It operates similarly to VLF but is specifically designed for load modules.

How does CA Quickfetch handle updates to load modules?

CA Quickfetch automatically detects changes to load modules and refreshes the in-memory copy. This ensures that the most up-to-date version of the module is always used.

How can I monitor the performance of CA Quickfetch?

CA Quickfetch provides an ISPF interface to view performance statistics related to load module usage and the effectiveness of the dynamic caching.

Does CA Quickfetch integrate with other CA products?

While CA Quickfetch can operate independently, it is often used in conjunction with CA PMO (Performance Management Option) to provide a more comprehensive performance management solution.

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