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Posted to commits@cassandra.apache.org by "Brandon Williams (JIRA)" <ji...@apache.org> on 2011/01/20 21:07:01 UTC
[jira] Updated: (CASSANDRA-2020) stress.java performance falls off
heavily towards the end
[ https://issues.apache.org/jira/browse/CASSANDRA-2020?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Brandon Williams updated CASSANDRA-2020:
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Description: This is due to threads completing towards the end, such that there aren't enough to fully stress the cluster. The main problem here is that stress.java is a straight port of stress.py, where each thread runs through some range until it's done, and the threads finish at different times (probably offset by jvm warmup time.) Instead, a producer/consumer model would work better. (was: This is due to threads completing towards the end, such that there aren't enough to fully stress the cluster. The main problem here is that stress.java is a straight port of stress.py, where it each thread run through some range until it's done, and the threads finish at different times (probably offset by jvm warmup time.) Instead, a producer/consumer model would work better.)
> stress.java performance falls off heavily towards the end
> ---------------------------------------------------------
>
> Key: CASSANDRA-2020
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2020
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Brandon Williams
> Assignee: Pavel Yaskevich
> Priority: Minor
> Fix For: 0.7.1
>
>
> This is due to threads completing towards the end, such that there aren't enough to fully stress the cluster. The main problem here is that stress.java is a straight port of stress.py, where each thread runs through some range until it's done, and the threads finish at different times (probably offset by jvm warmup time.) Instead, a producer/consumer model would work better.
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