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From "jonathan lacefield (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-8686) Introduce Latency Target for Stress
Date Mon, 26 Jan 2015 20:01:34 GMT
jonathan lacefield created CASSANDRA-8686:
---------------------------------------------

             Summary: 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
            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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