Performance with Enabling encryption on Shield

[jaymode (Jay Modi)]

@sss

1. How does Shield does encryption at the backend ? JDK SSL or OPEN SSL ?

Shield only uses the JDK SSLEngine.

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2. Which cipher suites should be used for better performance ?

I think you should consider security of the ciphers and prioritize that over performance. For example RC4 ciphers might be faster but it is widely considered insecure.

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3. Is the performance dependent on java version or JCE or other stuff ?

Performance of SSL will be dependent on Java version and the JCE provider. Some providers delegate to native libraries like NSS and this will often yield better performance.

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4. are there any benchmarks ES has on enabling encryption

We do not provide benchmarks as these will depend greatly on your JDK and hardware. The Rally tool can be used to test performance against a cluster running elasticsearch with shield/xpack security.

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I wanted to fine tune few parameters before taking performance numbers.

I think you are better off taking baseline numbers before changing any parameters; you may wind up with a slower configuration than the default if you do not.