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https://issues.apache.org/jira/browse/AVRO-1348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13850898#comment-13850898
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Doug Cutting commented on AVRO-1348:
------------------------------------
Here are benchmarks run on my 64-bit Linux laptop.
Before:
{code}
java version "1.6.0_45"
test name time M entries/sec M bytes/sec bytes/cycle
StringRead: 5495 ms 7.278 259.239 1780910
StringWrite: 5774 ms 6.927 246.725 1780910
java version "1.7.0_45"
StringRead: 3541 ms 11.296 402.326 1780910
StringWrite: 4378 ms 9.136 325.421 1780910
{code}
After:
{code}
java version "1.6.0_45"
test name time M entries/sec M bytes/sec bytes/cycle
StringRead: 4882 ms 8.193 291.829 1780910
StringWrite: 5844 ms 6.844 243.754 1780910
java version "1.7.0_45"
test name time M entries/sec M bytes/sec bytes/cycle
StringRead: 3535 ms 11.315 403.020 1780910
StringWrite: 4136 ms 9.670 344.411 1780910
{code}
The speedup of the write benchmark under Java 7 is consistent and inexplicable.
This appears to achieve good performance in both Java 6 & 7. I'll commit this
unless someone objects.
> Improve Utf8 to String conversion
> ---------------------------------
>
> Key: AVRO-1348
> URL: https://issues.apache.org/jira/browse/AVRO-1348
> Project: Avro
> Issue Type: Bug
> Reporter: Mark Wagner
> Assignee: Mohammad Kamrul Islam
> Attachments: AVRO-1348.patch, AVRO-1348v2.patch, AVRO1348v1.patch
>
>
> AVRO-1241 found that the existing method of creating Strings from Utf8 byte
> arrays could be made faster. The same method is being used in the
> Utf8.toString(), and could likely be sped up by doing the same thing.
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