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From "Erik Holstad (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-80) [hbase] Add a cache of 'hot' cells
Date Sat, 31 Jan 2009 23:47:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12669289#action_12669289
] 

Erik Holstad commented on HBASE-80:
-----------------------------------

Did some small changes to the test program to get a more equal test and the new numbers look
like:

Adding to LRU, timer 79 for 100000 adds
Reading from LRU, timer 135 for 100000 reads
Deleting from LRU, timer 123 for 100000 deletes
     
Adding to LinkedHash, timer 61 for 100000 adds
Reading from LinkedHash, timer 119 for 100000 reads
Deleting from LinkedHash, timer 87 for 100000 deletes

Adding to Hash, timer 49 for 100000 adds
Reading from Hash, timer 105 for 100000 reads
Deleting from Hash, timer 77 for 100000 deletes

So the big difference between the LHM and the LRU from the previous test are smaller now and
looks reasonable. 

> [hbase] Add a cache of 'hot' cells
> ----------------------------------
>
>                 Key: HBASE-80
>                 URL: https://issues.apache.org/jira/browse/HBASE-80
>             Project: Hadoop HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: stack
>            Assignee: Erik Holstad
>            Priority: Minor
>             Fix For: 0.20.0
>
>         Attachments: cache.patch, hbase-80-v1.patch, WR_PE.java
>
>


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