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From "Andy Tolbert (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10712) Performance dramatically impacted by using client SSL
Date Mon, 16 Nov 2015 17:47:11 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15006983#comment-15006983
] 

Andy Tolbert commented on CASSANDRA-10712:
------------------------------------------

Apologies for the huge images (thumbnail functionality doesn't seem to be working).  If more
detail or testing is needed, let me know and I'll be happy to provide more.

> 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!
> 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!
> 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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