[ https://issues.apache.org/jira/browse/HADOOP-11660?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Edward Nevill updated HADOOP-11660: ----------------------------------- Status: Open (was: Patch Available) > Add support for hardware crc on ARM aarch64 architecture > -------------------------------------------------------- > > Key: HADOOP-11660 > URL: https://issues.apache.org/jira/browse/HADOOP-11660 > Project: Hadoop Common > Issue Type: Improvement > Components: native > Affects Versions: 3.0.0 > Environment: ARM aarch64 development platform > Reporter: Edward Nevill > Assignee: Edward Nevill > Priority: Minor > Labels: performance > Original Estimate: 48h > Remaining Estimate: 48h > > This patch adds support for hardware crc for ARM's new 64 bit architecture > The patch is completely conditionalized on __aarch64__ > I have only added support for the non pipelined version as I benchmarked the > pipelined version on aarch64 and it showed no performance improvement. > The aarch64 version supports both Castagnoli and Zlib CRCs as both of these > are supported on ARM aarch64 hardwre. > To benchmark this I modified the test_bulk_crc32 test to print out the time > taken to CRC a 1MB dataset 1000 times. > Before: > CRC 1048576 bytes @ 512 bytes per checksum X 1000 iterations = 2.55 > CRC 1048576 bytes @ 512 bytes per checksum X 1000 iterations = 2.55 > After: > CRC 1048576 bytes @ 512 bytes per checksum X 1000 iterations = 0.57 > CRC 1048576 bytes @ 512 bytes per checksum X 1000 iterations = 0.57 > So this represents a 5X performance improvement on raw CRC calculation. -- This message was sent by Atlassian JIRA (v6.3.4#6332)