Technologies | LoadAVG | Load Monitoring & Analytics

loadavg is a simple and lightweight method of monitoring load, memory usage and transfer throughput on a Linux server. Every method of monitoring has an impact on the system being monitored, loadavg is designed to keep that impact as low as possible. It generates HTML & CSS charts, thereby shifting much of the work from the server to the client, your web browser.

While designed for use on a Linux Virtuozzo or OpenVZ VPS (Virtual Private Server), loadavg also works fine on a dedicated server.

Please note that on Virtuozzo v. 3 and OpenVZ servers the small beanc helper app is required to access VPS status information. The helper app is not required for Virtuozzo v. 2.6 servers.

loadavg consists of two scripts:

• logger.php simply reads a few files in /proc and writes out a line of data to a log file. It takes very little CPU time and memory.
• index.php reads through that logfile and produces HTML output for each line. This HTML is then compressed and transmitted to you. Again, that takes very little server CPU and memory.

Perhaps the most intensive part of the whole operation is the decompression and rendering of the HTML, which is done by the web browser on your workstation.

Requirements

• Linux
• PHP: loadavg was initially developed with v. 4.3.10 and should run fine with later releases
• The beanc helper app if running on a Virtuozzo v. 3 or OpenVZ server
• PHP safe mode off. Safe mode disables the ability to run programs outside the script directory (reference).

Find Out More!
Need more information? Head over to LoadAVG.com! You can find our more detailed information on the features and functionality of LoadAVG and take a tour of the online demo!

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