[ https://issues.apache.org/jira/browse/HBASE-11331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14105888#comment-14105888 ]
Nick Dimiduk commented on HBASE-11331: -------------------------------------- Interesting that proc.loadavg.1min decreases even though we know there's more decompress operations happening and the gc activity increases. Maybe that measurement includes iowait? > [blockcache] lazy block decompression > ------------------------------------- > > Key: HBASE-11331 > URL: https://issues.apache.org/jira/browse/HBASE-11331 > Project: HBase > Issue Type: Improvement > Components: regionserver > Reporter: Nick Dimiduk > Assignee: Nick Dimiduk > Attachments: HBASE-11331.00.patch, HBASE-11331.01.patch, > HBASE-11331.02.patch, HBASE-11331.03.patch, > HBASE-11331LazyBlockDecompressperfcompare.pdf, lazy-decompress.02.0.pdf, > lazy-decompress.02.1.json, lazy-decompress.02.1.pdf, v03-20g-045g-false.pdf, > v03-20g-045g-true-16h.pdf, v03-20g-045g-true.pdf > > > Maintaining data in its compressed form in the block cache will greatly > increase our effective blockcache size and should show a meaning improvement > in cache hit rates in well designed applications. The idea here is to lazily > decompress/decrypt blocks when they're consumed, rather than as soon as > they're pulled off of disk. > This is related to but less invasive than HBASE-8894. -- This message was sent by Atlassian JIRA (v6.2#6252)