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https://issues.apache.org/jira/browse/AVRO-765?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Scott Carey updated AVRO-765:
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Attachment: AVRO-765.patch
readLong is currently about half the speed of readInt, even if operating on the
same small numbers. I was able to reorganize readLong into two methods that
the compiler can fully optimize. The JIT favors smaller methods by attempting
more optimizations on them.
The current performance is:
{noformat}
test name time M entries/sec M bytes/sec
bytes/cycle
IntRead: 761 ms 262.586 661.007 629325
SmallLongRead: 1606 ms 124.481 313.356 629325
LongRead: 2637 ms 75.833 331.346 1092353
{noformat}
The changes in this patch bring up the readLong performance to be close to
readInt.
{noformat}
test name time M entries/sec M bytes/sec
bytes/cycle
IntRead: 742 ms 269.301 677.911 629325
SmallLongRead: 833 ms 239.884 603.860 629325
LongRead: 1663 ms 120.210 525.247 1092353
{noformat}
> Java: Improvement to BinaryDecoder readLong performance
> -------------------------------------------------------
>
> Key: AVRO-765
> URL: https://issues.apache.org/jira/browse/AVRO-765
> Project: Avro
> Issue Type: Improvement
> Reporter: Scott Carey
> Assignee: Scott Carey
> Priority: Minor
> Fix For: 1.5.0
>
> Attachments: AVRO-765.patch
>
>
> I have found a few enhancements to the BinaryDecoder while I was working on
> the BinaryEncoders.
> BinaryDecoder's readLong improves by 75%+ on the latest 64bit Sun JVM's.
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