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SecureRandom creation is slow, even in java 8

I was looking for this problem. I was under the impression that this is allowed in java 8. But all of a sudden, I started getting this issue in my new VM based on ubuntu 14.04.

2015-07-27 14: 56: 35.324 INFO 11809 --- [localhost-startStop-1] oacutil.SessionIdGeneratorBase: It took [167,833] milliseconds to instantiate SecureRandom to generate session ID using [SHA1PRNG].

And the java version

java version java version "1.8.0_45" Java (TM) SE Runtime Environment (build 1.8.0_45-b14) Java HotSpot (TM) 64-bit server VM (build 25.45-b02, mixed mode)

Ubuntu 14.04 server.

Another thing is, I am starting this java process as a spring boot app that has embedded tomcat running.

Any ideas what could be wrong? I even tried,

-Djava.security.egd = file: / dev /./ urandom option

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2 answers


Try using the following command at startup



java -Djava.security.egd = file: / dev /./ urandom -jar demo.jar

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Try replacing your embedded tomcat with a footboard by pasting the snippet below into your pom.xml:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <exclusions>
        <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-undertow</artifactId>
    <version>2.1.0.RELEASE</version>
</dependency>


It works great for me. The SecureRandom issue is a tomcat issue that you can completely replace with another servlet container.

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