FULL PRODUCT VERSION :
Java version "1.8.0_141"
Java(TM) SE Runtime Environment (build 1.8.0_141-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.141-b15, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Red Hat Enterprise Linux Server release 6.9 (Santiago)
Linux myhost 2.6.32-696.10.1.el6.x86_64 #1 SMP x86_64 GNU/Linux


EXTRA RELEVANT SYSTEM CONFIGURATION :
CGroups Configured

A DESCRIPTION OF THE PROBLEM :
version of JRE 1.8.0_141.b15 still has has the bug below
https://bugs.openjdk.java.net/browse/JDK-6515172

Even though per the ticket, it should have been resolved in JRE 1.8.0_141.b01 but still there

Here is the code that was used to test the issue
public class Processors{
 public static void main(String []args) {
   System.out.println("Available Processors: "+Runtime.getRuntime().availableProcessors());
 }
}

We have 4 core processor

Here are the execution results of above code on hrdvijh0401d
$ ./jre1.8.0_141_bpr32-x86_64/bin/java -cp . Processors
Available Processors: 1
$ ./jre1.8.0_141-x86_64/bin/java -cp . Processors
Available Processors: 1
$ ./jre1.8.0_101-x86_64/bin/java -cp . Processors
Available Processors: 4



REGRESSION. Last worked in version 8u131

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Here is the code that was used to test the issue
public class Processors{
 public static void main(String []args) {
   System.out.println("Available Processors: "+Runtime.getRuntime().availableProcessors());
 }
}

We have 4 core processor

Here are the execution results of above code on hrdvijh0401d
$ ./jre1.8.0_141_bpr32-x86_64/bin/java -cp . Processors
Available Processors: 1
$ ./jre1.8.0_141-x86_64/bin/java -cp . Processors
Available Processors: 1
$ ./jre1.8.0_101-x86_64/bin/java -cp . Processors
Available Processors: 4


REPRODUCIBILITY :
This bug can be reproduced always.