[LUCENE-639] [PATCH] Slight performance improvement for readVInt() of IndexInput

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 2.0.0
• Component/s: core/index
• Assignee: Unassigned
• Reporter: Johan Stuyts
• Created: 28/Jul/06 08:30
• Updated: 28/Aug/22 11:29
• Resolved: 13/Jan/08 15:22

Description

By unrolling the loop in readVInt() I was able to get a slight, about 1.8 %, performance improvement for this method. The test program invoked the method over 17 million times on each run.

I ran the performance tests on:

• Windows XP Pro SP2
• Sun JDK 1.5.0_07
• YourKit 5.5.4
• Lucene trunk