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Posted to common-issues@hadoop.apache.org by "Edward Nevill (JIRA)" <ji...@apache.org> on 2014/06/26 10:55:25 UTC
[jira] [Created] (HADOOP-10752) Add support for hardware crc on ARM
aarch64 architecture
Edward Nevill created HADOOP-10752:
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Summary: Add support for hardware crc on ARM aarch64 architecture
Key: HADOOP-10752
URL: https://issues.apache.org/jira/browse/HADOOP-10752
Project: Hadoop Common
Issue Type: Improvement
Components: native, performance
Affects Versions: trunk-win
Environment: ARM aarch64 Juno development platform
Reporter: Edward Nevill
Priority: Minor
Fix For: trunk-win
This patch adds support for hardware crc for ARM's new 64 bit architecture.
The patch is completely conditionalized on __arch64__
For the moment I have only done the non pipelined version as the hw I have only has 1 crc execute unit.
Some initial benchmarks on terasort give
sw crc: 107 sec
hw crc: 103 sec
The performance improvement is quite small, but this is limited by the fact that I am using early stage hw which is not performant.
I have also built it on x86 and I think the change is fairly safe for other architectures because post conditionalization the src is identical on other architectures.
This is the first patch I have submitted for Hadoop so I would welcome any feedback and help.
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