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From "Thiruvalluvan M. G. (JIRA)" <j...@apache.org>
Subject [jira] Updated: (AVRO-315) Performance improvements to BinaryDecoder
Date Wed, 13 Jan 2010 07:08:54 GMT

     [ https://issues.apache.org/jira/browse/AVRO-315?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Thiruvalluvan M. G. updated AVRO-315:
-------------------------------------

    Assignee: Thiruvalluvan M. G.
      Status: Patch Available  (was: Open)

> 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
>
>
> 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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