Why are operations on large NTFS directories with long filenames so slow?
A. or DOS compatibility, NTFS always generates another filename for any name that does not conform to the normal DOS 8.3 filename specification. Unfortunately, it takes some time to verify that these automatically generated filenames are unique within that directory. Local access of these same directories also takes a corresponding amount of time. If filenaming can be reasonably restricted to the 8.3 convention, it is recommended that you do so. Some NFS clients have exhibited unreliable behavior when experiencing long delays in response time to NFS requests.
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