Veritas File System performance enhancements
Traditional file systems employ block-based allocation schemes that provide adequate random access and latency for small files, but which limit throughput for larger files. As a result, they are less than optimal for commercial environments.
VxFS addresses this file system performance issue through an alternative allocation method and increased user control over allocation, I/O, and caching policies.
See Using Veritas File System.
VxFS provides the following performance enhancements:
Data synchronous I/O
Direct I/O and discovered direct I/O
Support for file systems up to 256 terabytes
Support for files up to 8 exabytes
Enhanced I/O performance
Caching advisories
Enhanced directory features
Explicit file alignment, extent size, and preallocation controls
Tunable I/O parameters
Tunable indirect data extent size
Integration with VxVM™
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Support for large directories
Note: |
VxFS reduces the file lookup time in directories with an extremely large number of files. |