Apache MINA SSHD seems slow down on Java 8 due to secure random

build.gradle

if (System.getProperty('os.name') == 'Linux') {
    tasks.withType(JavaForkOptions) {
        systemProperty 'java.security.egd', 'file:/dev/./urandom'
    }
}

threaddump.txt

"Test worker" #11 prio=5 os_prio=0 tid=0x00007fd454a6d800 nid=0x6b10 runnable [0x00007fd436011000]
   java.lang.Thread.State: RUNNABLE
        at java.io.FileInputStream.readBytes(Native Method)
        at java.io.FileInputStream.read(FileInputStream.java:234)
        at sun.security.provider.NativePRNG$RandomIO.readFully(NativePRNG.java:410)
        at sun.security.provider.NativePRNG$RandomIO.implGenerateSeed(NativePRNG.java:427)
        - locked <0x00000000c4a408f8> (a java.lang.Object)
        at sun.security.provider.NativePRNG$RandomIO.access$500(NativePRNG.java:329)
        at sun.security.provider.NativePRNG.engineGenerateSeed(NativePRNG.java:224)
        at java.security.SecureRandom.generateSeed(SecureRandom.java:522)
        at org.apache.sshd.common.random.BouncyCastleRandom.<init>(BouncyCastleRandom.java:57)
        at org.apache.sshd.common.random.BouncyCastleRandom$Factory.create(BouncyCastleRandom.java:48)
        at org.apache.sshd.common.random.BouncyCastleRandom$Factory.create(BouncyCastleRandom.java:41)
        at org.apache.sshd.common.random.SingletonRandomFactory.<init>(SingletonRandomFactory.java:37)
        at org.apache.sshd.SshServer.setUpDefaultServer(SshServer.java:389)
        at org.apache.sshd.SshServer$setUpDefaultServer.call(Unknown Source)
        at org.hidetake.gradle.ssh.test.SshServerMock.setUpLocalhostServer(SshServerMock.groovy:54)
        at org.hidetake.gradle.ssh.test.SshServerMock$setUpLocalhostServer.call(Unknown Source)
        at org.hidetake.gradle.ssh.server.AuthenticationSpec.setup(AuthenticationSpec.groovy:26)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:483)
        at org.spockframework.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:138)
        at org.spockframework.runtime.BaseSpecRunner.invokeRaw(BaseSpecRunner.java:330)
        at org.spockframework.runtime.BaseSpecRunner.invoke(BaseSpecRunner.java:311)
        at org.spockframework.runtime.BaseSpecRunner.invokeSetup(BaseSpecRunner.java:279)
        at org.spockframework.runtime.BaseSpecRunner.doRunIteration(BaseSpecRunner.java:255)
        at sun.reflect.GeneratedMethodAccessor87.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:483)
        at org.spockframework.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:138)
        at org.spockframework.runtime.BaseSpecRunner.invokeRaw(BaseSpecRunner.java:330)
        at org.spockframework.runtime.BaseSpecRunner.invoke(BaseSpecRunner.java:311)
        at org.spockframework.runtime.BaseSpecRunner.runIteration(BaseSpecRunner.java:223)
        at org.spockframework.runtime.BaseSpecRunner.initializeAndRunIteration(BaseSpecRunner.java:214)
        at org.spockframework.runtime.BaseSpecRunner.runSimpleFeature(BaseSpecRunner.java:205)
        at org.spockframework.runtime.BaseSpecRunner.doRunFeature(BaseSpecRunner.java:199)
        at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:483)
        at org.spockframework.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:138)
        at org.spockframework.runtime.BaseSpecRunner.invokeRaw(BaseSpecRunner.java:330)
        at org.spockframework.runtime.BaseSpecRunner.invoke(BaseSpecRunner.java:311)
        at org.spockframework.runtime.BaseSpecRunner.runSpec(BaseSpecRunner.java:91)
        at org.spockframework.runtime.BaseSpecRunner.run(BaseSpecRunner.java:82)
        at org.spockframework.runtime.Sputnik.run(Sputnik.java:63)
        at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.runTestClass(JUnitTestClassExecuter.java:86)
        at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.execute(JUnitTestClassExecuter.java:49)
        at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassProcessor.processTestClass(JUnitTestClassProcessor.java:69)
        at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:48)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:483)
        at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
        at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
        at org.gradle.messaging.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
        at org.gradle.messaging.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
        at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
        at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:105)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:483)
        at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
        at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
        at org.gradle.messaging.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:355)
        at org.gradle.internal.concurrent.DefaultExecutorFactory$StoppableExecutorImpl$1.run(DefaultExecutorFactory.java:64)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)