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https://issues.apache.org/jira/browse/CASSANDRA-2235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12998870#comment-12998870
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Jonathan Ellis commented on CASSANDRA-2235:
-------------------------------------------

bq. We found that the way we are seeking in the file, BRAF keeps flushing out 
its buffer of 8MB, and we call dfile.sync() on every row

fixed in CASSANDRA-2218

> Counter AES performance issue
> -----------------------------
>
>                 Key: CASSANDRA-2235
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2235
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Chris Goffinet
>            Assignee: Chris Goffinet
>             Fix For: 0.8
>
>
> We noticed tonight when trying out AES for Counters in trunk, there is a 
> serious performance issue when inlining the SSTables. We found that the way 
> we are seeking in the file, BRAF keeps flushing out its buffer of 8MB, and we 
> call dfile.sync() on every row. We are finalizing a patch to write a new 
> SSTable on rebuild, instead of inlining. 

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