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From "Andy Tolbert (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-10712) Performance dramatically impacted by using client SSL
Date Mon, 16 Nov 2015 17:42:10 GMT
Andy Tolbert created CASSANDRA-10712:
----------------------------------------

             Summary: Performance dramatically impacted by using client SSL
                 Key: CASSANDRA-10712
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10712
             Project: Cassandra
          Issue Type: Bug
            Reporter: Andy Tolbert
         Attachments: bench-graph.png, cpu_metrics.png, ssl-bench.tgz

Throughput latency & throughput achieved via cassandra-stress is dramatically impacted
when using SSL (about 5-6x).

!bench-graph.png|thumbnail!

I haven't done much analysis of this yet, but one observation is that I do notice a dramatic
increase in context switches while running with SSL on the server side.  In the charts below,
the left-most data in a chart represents running without SSL, and the right-most data represents
running with SSL.  You'll observe that on the C* node that while the CPU utilization is down
when running stress with SSL, the context switches are higher.

!cpu_metrics.png|thumbnail!

Attached is [^ssl-bench.tgz] that includes output for each run, the parameters used and an
html file that is the output of running stress with [CASSANDRA-7918].

If you need some ready made keystore / truststore files to work with, some can be found [here|https://github.com/datastax/java-driver/tree/2.1/driver-core/src/test/resources].



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