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Posted to commits@cassandra.apache.org by "Andy Tolbert (JIRA)" <ji...@apache.org> on 2015/11/16 18:47:11 UTC
[jira] [Commented] (CASSANDRA-10712) Performance dramatically
impacted by using client SSL
[ 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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