Slow Performance on NTFS with Long Filenames (120363)
The information in this article applies to:
- Microsoft Windows NT Server 3.1
- Microsoft Windows NT Workstation 3.1
- Microsoft Windows NT Advanced Server 3.1
This article was previously published under Q120363 SYMPTOMS
Using similar long filenames on NTFS volumes may cause some I/O operations
to slow dramatically. For example, if a directory on an NTFS volume has
10,000 files, each 32 characters long, with the first eight characters
identical, file operations such as the DIR command can slow to a crawl.
CAUSE
This is a result of the algorithm used to generate 8.3 filenames (8-
character names with 3-character suffixes). There is no specific number of
similar files that downgrades performance. It varies.
STATUS
Microsoft has confirmed this to be a problem in Windows NT and Windows NT
Advanced Server version 3.10. We are researching this problem and will
post new information in the Microsoft Knowledge Base as it becomes
available.
| Modification Type: | Major | Last Reviewed: | 11/20/2003 |
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| Keywords: | KB120363 |
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