 Most LiveCD distributions do not provide support of JFS because JFSutils are not installed.According to reviews and benchmarks of the available filesystems for Linux, JFS is fast and reliable, with consistently good performance under different kinds of load, contrary to other filesystems that seem to perform better under particular usage patterns, for instance with small or large files.Another characteristic often mentioned, is that it is light and efficient with available system resources and even heavy disk activity is realized with low CPU usage.