This code modifies FileBench to use avl trees to manage filesetentries, allowing direct selection of existing vs. non existing files and leaf directories and random access of files and leaf directories. The use of avl trees and separate trees for existing and non-existing files significantly reduces the time spent in picking files for those workloads that alternatively use both types, while simplifying the pick code. Random file access allows an index obtained from a random variable to be used to select a file. I have also modified the createfile() code so it picks files to preallocate on the disk randomly, thus better scrambling file access even for those workloads that use a round robin approach to accessing filesetentries.
The webrev is at: http://cr.opensolaris.org/~dreww/randomfileaccess/ _______________________________________________ perf-discuss mailing list perf-discuss@opensolaris.org
