hcache extends the functionality of pcstat, a tool for examining page cache statistics. hcache allows users to identify the largest cached files globally by specifying the number of top files to display. This helps address the challenge of pinpointing specific large cached files that contribute to memory consumption. It leverages system calls to retrieve cache information.
hcache provides a focused view of top cached files, unlike pcstat's process-centric approach. It's a simple utility building upon pcstat's existing functionality, offering a targeted solution for identifying large cached files. The tool includes cross-platform compatibility with Linux and provides clear output for easy analysis.
- Global Cache Analysis: Identifies top cached files across the entire system.
- Command-Line Interface: Utilizes command-line options for easy usage and integration with other tools.
- JSON Output: Provides data in JSON format for programmatic consumption and further processing.
- Compatibility: Tested and functional on CentOS 7.2 and Ubuntu 16.04.
- Lightweight: A small, self-contained utility with minimal dependencies.
hcache is an active project, with recent commits indicating ongoing maintenance and support. Documentation covers installation and usage. The reliance on pcstat and established system calls suggests a degree of stability. Community presence is limited to the author.
System administrators and developers benefit from hcache by quickly identifying large cached files that might be consuming excessive memory. It is useful for troubleshooting memory-related performance issues and understanding system memory usage patterns. It offers a more direct approach than examining process memory usage and looking up details with pcstat.