Notes on Trace-Driven Scientific I/O Benchmarks

These notes are also in the README file of the released package.



All the above benchmark runs may take an optional -nofs and -drop flags. If -nofs is set, the benchmark run will not try to reconstruct the filesystem in the trace. Because file system reconstruction is time-consuming, it can be helpful to utilize the -nofs flag on subsequent runs. If -drop is set, the file cache will be sync'd and dropped before each replay. This feature is available in Linux kernels 2.6.16 and newer. You must have root privileges to utilize the -drop flag.