bootchart

Bootchart is a tool for performance analysis and visualization of the GNU/Linux boot process. Resource utilization and process information are collected during the boot process and are later rendered in a PNG, SVG or EPS encoded chart. Bootchart provides a shell script to be run by the kernel in the init phase. The script will run in background and collect process information, CPU statistics and disk usage statistics from the /proc file system. The performance data are stored in memory and are written to disk once the boot process completes. The boot log file is later processed using a Java application (or the web form) which builds the process tree and renders a performance chart in different formats: SVG e EPS. The chart can then be analyzed to examine process dependency and overall resource utilization.