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undera/perfmon-agent

⭐ 418 Java added to this list on 2025-04-19 repository created 2013-02-17

PerfMon Server Agent is a server metrics fetching agent designed to access system metrics on remote machines. It is based on the SIGAR library, which provides a way to gather various system metrics such as CPU, memory, disk I/O, network I/O, and JMX metrics. The agent is written in Java and can be run on servers without requiring root or admin privileges. It supports both UDP and TCP protocols for communication, allowing clients to connect and query metrics remotely. The agent can be started using simple scripts on Unix or Windows systems and can be configured with options such as specifying listening ports, automatic shutdown when clients disconnect, and changing the metrics collection interval. The agent uses a simple plain-text protocol for communication, making it easy to implement client applications that can interact with it. It supports commands like test, exit, shutdown, interval, metrics, and metrics-single to control the agent and retrieve metrics data. The metrics collected include detailed CPU usage (total and per process), memory usage (total and per process), disk I/O statistics, network I/O statistics, and JMX metrics for monitoring Java applications. Despite its capabilities, the project is noted to be very out-of-date for modern technology, as it relies on the SIGAR library last updated in 2010, which may cause compatibility issues with many modern systems. However, it remains a useful tool for monitoring system performance on supported platforms. The project provides downloadable releases and detailed usage instructions, making it accessible for users who need to monitor server performance remotely. Keywords extracted include server metrics, system metrics, remote monitoring, SIGAR, CPU metrics, memory metrics, disk I/O, network I/O, JMX metrics, Java agent, UDP, TCP, plain-text protocol, performance monitoring, server agent, metrics collection, process monitoring, and system information. Overall, PerfMon Server Agent is a Java-based server monitoring tool that enables remote access to a wide range of system performance metrics through a simple and extensible protocol, suitable for integration with other monitoring applications despite its outdated dependencies.

https://github.com/undera/perfmon-agent

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