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https://issues.apache.org/jira/browse/HBASE-12148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15204915#comment-15204915
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Lars Hofhansl commented on HBASE-12148:
---------------------------------------

If this read load you're applying? Or mixed read-write load?

If the problem is actual contention (threads lock each other out and get 
suspended) then we should be able to help with read/write locks or 
mutable/immutable tracker as I suggest above.

> Remove TimeRangeTracker as point of contention when many threads writing a 
> Store
> --------------------------------------------------------------------------------
>
>                 Key: HBASE-12148
>                 URL: https://issues.apache.org/jira/browse/HBASE-12148
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Performance
>    Affects Versions: 2.0.0, 0.99.1
>            Reporter: stack
>            Assignee: Walter Koetke
>             Fix For: 2.0.0, 1.3.0, 0.98.19
>
>         Attachments: 
> 0001-In-AtomicUtils-change-updateMin-and-updateMax-to-ret.patch, 
> 12148.addendum.txt, 12148.txt, 12148.txt, 12148v2.txt, 12148v2.txt, 
> HBASE-12148-V3.patch, HBASE-12148.txt, HBASE-12148V2.txt, Screen Shot 
> 2014-10-01 at 3.39.46 PM.png, Screen Shot 2014-10-01 at 3.41.07 PM.png, 
> TimeRangeTracker.tiff
>
>




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