Jeff Bonwick

Jeff Bonwick was a Sun Fellow at Sun Microsystems, later a Vice President at Sun and then a Senior Software Architect at Oracle until his departure from the company on 30 September 2010.^[1]

He led the team which developed ZFS for Solaris.^[2]

Notable among Bonwick's other work is the slab allocator,^[3] an object-caching kernel memory allocator, and the LZJB compression algorithm.

Bonwick published a blog,^[4] which details the development of ZFS.

Publications

• The Slab allocator: an object-caching kernel memory allocator
• Magazines and Vmem: extending the Slab allocator to many CPUs and arbitrary resources
• Real-World Concurrency

Patents

• (Application) Method and system for storing a sparse file using fill counts
• (Application) Multiple replication levels with pooled devices
• (Application) Hierarchical file system naming
• (Application) Method and system for repairing partially damaged blocks
• (Application) Adaptive resilvering I/O scheduling
• (Application) Method and system for adaptive metadata replication
• (Application) Method and system for metadata-based resilvering
• (Application) Method and system for pruned resilvering using a dirty time log
• (Application) Automatic intent log testing
• (Application) Input/output priority inheritance
• (Application) Unlimited file system snapshots and clones
• Mechanism for performing polling in a system
• Method and system for allocation of file descriptors
• Automatic conversion of all-zero data storage blocks into file holes
• Method and apparatus for I/O scheduling
• Method and system for detecting and correcting data errors using data permutations
• Method and system for I/O scheduler activations
• I/O dependency graphs
• Pipelined I/O execution
• Method and apparatus for identifying tampering of data in a file system
• Method and system for data replication
• Dynamic intent log
• Method and system using checksums to repair data
• Ditto blocks

References