NOTE

CAUTION

HP DCE Measurement Service

Overview of DMS

Overview of DMS

DMS provides performance instrumentation for DCE servers and for the server side of applications that use DCE Remote Procedure Calls (RPCs). When DMS is enabled, it collects data about RPCs that execute in the target process. The collected data is actually displayed using HP GlancePlus.

HP GlancePlus is a performance monitoring tool that provides visual information to help you identify potential or existing problems involving a system’s CPU, memory, or LAN utilization. You can use GlancePlus to define critical processing thresholds and to set alarms that are triggered when the targets are approached. For information about HP GlancePlus, see Getting Started with GlancePlus and the GlancePlus online help. You can access the GlancePlus online help either from GlancePlus or from the Help Manager on the Front Panel.

DMS is based on the Open Software Foundation RFC 33.0 Standardized Performance Instrumentation and Interface Specification for Monitoring DCE-Based Applications (July 1995). DMS provides measurement of resource utilization (such as response time of components, error counts and rates, service counts and rates, queuing behavior, and so forth) and processing time (such as service time, queuing time, etc.) for DCE RPCs.

DMS Restriction

DMS has the following restriction:

A server runs as root if it is started by a process running as root or if it is owned by root and the setuid permission bit is set.

As of HP DCE 1.6, DMS can be enabled only for servers that run as root. Applications servers that do not run as root are not displayed in the DCE information fields of HP GlancePlus.

Do not run a server as root unless the server was designed to run as root.

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Planning and Configuring HP DCE 1.7

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HP UX DCE Software manual Overview of DMS, DMS Restriction

UX DCE Software specifications

HP UX DCE Software, or Hewlett-Packard UNIX Distributed Computing Environment, represents a significant tool in the realm of distributed system architecture. Designed primarily for enterprise environments, HP UX DCE enhances the reliability, scalability, and manageability of applications over diverse networked systems.

One of the main features of HP UX DCE is its ability to integrate various computing platforms, enabling seamless communication and resource sharing across distributed nodes. This facilitates the creation of complex applications that can operate on a multitude of systems, thus enhancing operational flexibility. DCE employs standardized interfaces, which means applications written for one platform can run on any other platform that supports DCE, promoting cross-platform compatibility.

In terms of technologies, HP UX DCE utilizes Remote Procedure Calls (RPC) as a core feature. This mechanism allows different applications to communicate and invoke procedures on remote systems as if they were local calls. Additionally, DCE includes a robust security model that incorporates Kerberos for authentication, ensuring that communication between nodes remains secure and protected against unauthorized access.

Another significant characteristic of HP UX DCE is its distributed file system, which allows for transparent file access across different machines. The DCE File System (DFS) provides a unified namespace and manages data replication and consistency across distributed storage resources. This reduces the complexity of data management and enhances data availability.

HP UX DCE also supports a variety of programming languages, making it accessible for developers accustomed to different coding environments. This versatility encourages widespread adoption and innovation, as developers can leverage existing skills to create distributed applications.

Furthermore, HP UX DCE is built for high availability, ensuring that critical applications remain responsive even in the face of hardware or network failures. Its inherent component redundancy and fault-tolerant architecture are designed to minimize downtime, which is essential for mission-critical applications in enterprise scenarios.

In conclusion, HP UX DCE Software provides a comprehensive framework for developing, deploying, and managing distributed applications. Its core features such as RPC support, a secure authentication mechanism, a robust file system, and cross-platform compatibility make it a vital resource for organizations aiming to leverage distributed computing effectively. As enterprises evolve, HP UX DCE stands out as an influential solution in the dynamic landscape of distributed environments.