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Posted to commits@cassandra.apache.org by "Benedict (JIRA)" <ji...@apache.org> on 2015/01/28 16:12:35 UTC

[jira] [Assigned] (CASSANDRA-8686) Introduce Latency Target for Stress

     [ https://issues.apache.org/jira/browse/CASSANDRA-8686?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Benedict reassigned CASSANDRA-8686:
-----------------------------------

    Assignee: Benedict

> Introduce Latency Target for Stress
> -----------------------------------
>
>                 Key: CASSANDRA-8686
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8686
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: jonathan lacefield
>            Assignee: Benedict
>            Priority: Minor
>
> This item is a request to add a latency target to the rate option for the new stress tool.  The goal of the latency target would be to provide a guideline for SLAs to the stress tool so the stress tool can determine threads and throughputs that can be sustained while meeting the SLA targets.
> For example:
> cassandra-stress [options/commands] -rate latency p90=5 p95=10 p99=100
> The outcome of this command would be a stress execution that would gradually increase threads, and hence throughput (trans/sec), until the latency profile can no longer be satisfied with the current workload (yaml file definition) and/or cluster.  This would provide a ceiling for throughput and connections for the given cluster, workload, and SLA profile.



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