[ https://issues.apache.org/jira/browse/HADOOP-10554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
patrick white updated HADOOP-10554: ----------------------------------- Summary: Performance: Scan metrics for 2.4 are down compared to 0.23.9 (was: Performance: Scan metrics for 2.4 are notably down compared to 0.23.9) > Performance: Scan metrics for 2.4 are down compared to 0.23.9 > ------------------------------------------------------------- > > Key: HADOOP-10554 > URL: https://issues.apache.org/jira/browse/HADOOP-10554 > Project: Hadoop Common > Issue Type: Bug > Affects Versions: 2.4.0 > Reporter: patrick white > > Performance comparison benchmarks for Scan test's runtime and throughput > metrics are slightly out of 5% tolerance in 2.x compared against 0.23. The > trend is consistent across later releases in both lines, latest release > numbers are; > Runtime: > 2.4.0.0 -> 73.6 seconds (avg 5 passes) > 0.23.9.12 -> 69.4 seconds (avg 5 passes) > Diff: -5.7% > Throughput: > 2.4.0.0 -> 28.67 GB/s (avg 5 passes) > 0.23.9.12 -> 30.41 GB/s (avg 5 passes) > Diff: -6.1% > Scan test is specifically measuring the average map's input read performance. > The diff is consistent when run on a larger (350 node) perf environment, we > are in process of seeing if this reproduces in a smaller cluster, using > appropriately scaled inputs. -- This message was sent by Atlassian JIRA (v6.2#6252)