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File Cache Attempt Rate

This section reports the file system cache statistics. System caches hold frequently accessed disk blocks of various types. Blocks in file cache do not require disk I/O; therefore, the use of caches expedites I/O requests.

Dir FCB

The number of attempts per second that were made to find directory file control blocks in the directory cache.

Dir Data

The number of attempts per second that were made to find directory data in the directory cache.

Quota

The number of attempts per second that were made to find entries in the quota cache.

File Id

The number of attempts per second that were made to find file identifiers in the file ID cache.

File Hdr

The number of attempts per second that were made to find file headers in the file header cache.

Extent

The number of attempts per second that were made to find extents in the extent cache.

Bit Map

The number of attempts per second that were made to find entries in the bit map cache.