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https://issues.apache.org/jira/browse/CASSANDRA-514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12770156#action_12770156
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Brandon Williams commented on CASSANDRA-514:
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I should also note that I changed STDEV to be a function of the TOTAL_KEYS. At
30%, there's around a 60-68% repeat rate on reads.
> stress.py fixes and improvements
> --------------------------------
>
> Key: CASSANDRA-514
> URL: https://issues.apache.org/jira/browse/CASSANDRA-514
> Project: Cassandra
> Issue Type: Improvement
> Environment: debian amd64 Java(TM) SE Runtime Environment (build
> 1.6.0_12-b04)
> Reporter: Brandon Williams
> Priority: Minor
> Attachments: multiproc.patch
>
>
> stress.py cannot currently fully stress cassandra. This is due to at least
> two reasons:
> 1. It does not use the accelerated thrift protocol (thanks jbellis)
> 2. The GIL is preventing concurrency
> To address this, I've modified it in a backwards-compatible way to support
> multiprocessing, if available.
> Also, key_generator was providing floats instead of integers, causing the
> read test to ask for keys that did not exist.
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