February 2010
Intermediate to advanced
460 pages
16h 22m
English
book
z/OS Distributed File Service zSeries File System Implementation z/OS V1R11
by Paul Rogers, Robert Hering
Content preview from z/OS Distributed File Service zSeries File System Implementation z/OS V1R11
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Chapter 6. Performance and tuning 261
6.3.2 Metadata cache storage
The metadata cache is used to contain all file system metadata, which includes the following:
All directory contents
File status information, which includes atime, mtime, size, permission bits, and so on
File system structures
Caching of data for files smaller than 7 K
New metadata backing cache
An optional metadata backing cache that contains an extension to the meta cache can be
specified. This new backing cache resides in a data space and is used as a “paging” area for
metadata. Therefore, it allows a larger meta cache for workloads that need large amounts of
metadata.
This ...
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