[DAFFODIL-2921] Default CLI to MappedByteBuffer when parsing files instead of a FileInputStream

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.8.0
• Fix Version/s: 3.9.0
• Component/s: CLI, Performance
• Assignee: Unassigned
• Reporter: Steve Lawrence
• Created: 31/Jul/24 17:07
• Updated: 22/Aug/24 12:45
• Resolved: 21/Aug/24 16:45

Description

The ByteBufferInputSource is a bit faster than the BucketingInputSource so when parsing files we should mmap them to a ByteBuffer and use the faster InputSource. Note only does would this take advantage of ByteBufferInputSource performance, it would also take advantage of optimizations of mmap-ing files, which should be more performant than a FileInputStream.