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https://issues.apache.org/jira/browse/AVRO-315?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Doug Cutting updated AVRO-315:
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Attachment: AVRO-315.patch
I saw no improvement to readInt() on Ubuntu 9.10 using Java 1.6.0_15.
I was able to further improve readFloat() and readDouble() by ~12% by
pre-allocating the buffer.
I attached a new version of the patch with that change.
> Performance improvements to BinaryDecoder
> -----------------------------------------
>
> Key: AVRO-315
> URL: https://issues.apache.org/jira/browse/AVRO-315
> Project: Avro
> Issue Type: Improvement
> Reporter: Thiruvalluvan M. G.
> Assignee: Thiruvalluvan M. G.
> Attachments: AVRO-315-test.patch, AVRO-315.patch, AVRO-315.patch
>
>
> 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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