Added documentation for SSL performance improvements #239
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pveentjer
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pveentjer
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Feb 15, 2017
| @@ -87,4 +87,23 @@ ClientConfig clientConfig = new ClientConfig(); | |||
| clientConfig.getNetworkConfig().addAddress("127.0.0.1"); | |||
| ``` | |||
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|  ***NOTE:*** *When you use SSL with the Java client, it will have a throughput that is 50% of a non-SSL Java client with the same configuration. If it is a .NET client, it will have a throughput that is 46% of a non-SSL .NET client.* | |||
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I have removed this section since I don't know how valid these numbers are. Also with 3.8 a lot of things have changed + with the right changes there is some additional performance to gain on the JVM.
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jerrinot
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Feb 15, 2017
| the generation of random numbers. /dev/random relies on entropy to be able to generate random numbers. However if this entropy is | ||
| insufficient to keep up with the rate requiring random numbers, it can slow down encryption/decryption. This can easily be fixed | ||
| by adding the following system property `-Djava.security.egd=file:/dev/./urandom`. For a more permanent solution modify | ||
| `<JAVA_HOME>/jre/lib/security/java.security` file; look for the `securerandom.source=/dev/urandom` and change it |
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this is a dangerous recommendation w/o informing about security implications.
the /dev/random device is used for a reason.
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http://www.2uo.de/myths-about-urandom/
Even in Oracle Weblogic they don't decline urandom.
https://docs.oracle.com/cd/E13209_01/wlcp/wlss30/configwlss/jvmrand.html
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ok. I assume you know what you are doing.
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