Performance improvements to BinaryDecoder
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Key: AVRO-315
URL: https://issues.apache.org/jira/browse/AVRO-315
Project: Avro
Issue Type: Improvement
Reporter: Thiruvalluvan M. G.
The forthcoming patch improves the performance of BinaryDecoder.readLong(),
readFloat() and readDouble().
The test-patch has a command-line program Perf in org.apache.avro.io in the
(test part of the source directory) which tests the performance of readInt()
(which calls readLong()) readFloat() and readDouble(). On my machine, the
patch improves the performance by 10% for readInt() and about 50% for
readFloat() and readDouble().
The idea is to unroll the loops in readLong(), readFloat() and readDouble().
There is a small change in doReadBytes() which checks for most common condition
before less common ones.
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