[ https://issues.apache.org/jira/browse/HBASE-7868?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jean-Marc Spaggiari updated HBASE-7868: --------------------------------------- Attachment: performances.pdf Attached is the file with the values. I can also uploade the entire spreadsheet with all the formulas if required. anyway I will share it when I will have all the 0.94.x numbers. I ran those tests from HBase distrib directly out of the box. No configuration, no tweeking, nothing. On a 4 cores laptop with only 2GB RAM. I can try the same script and produce the same report on another hardware if that helps. > HFile performance regression between 0.92 and 0.94 > -------------------------------------------------- > > Key: HBASE-7868 > URL: https://issues.apache.org/jira/browse/HBASE-7868 > Project: HBase > Issue Type: Bug > Components: io > Affects Versions: 0.94.5 > Reporter: Matteo Bertozzi > Assignee: Matteo Bertozzi > Fix For: 0.94.6 > > Attachments: FilteredScan.png, hfileperf-graphs.png, performances.pdf > > > By HFilePerformanceEvaluation seems that 0.94 is slower then 0.92 > Looking at the profiler for the Scan path, seems that most of the time, > compared to 92, is spent in the metrics dictionary lookup. [~eclark] pointed > out the new per family/block metrics. > By commenting the metrics call in HFileReaderV2, the performance seems to get > better, but maybe metrics is not the only problem. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira