ADDITIONAL SYSTEM INFORMATION :
Running on RedHat linux system

A DESCRIPTION OF THE PROBLEM :
Multithreaded application is observing performance degradation due to threads blocking within StandardCharsets.charsetForName method on the synchronized block
```
 public final Charset charsetForName(String charsetName) {
        synchronized (this) {
            return lookup(canonicalize(charsetName));
        }
    }
```

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run a multithraded application that consumes StandardCharsets.charsetForName( with around 200+ threads with CPU utilization around 85+%. Profile this application

I was running a load generation application. When I tried to increase the load by delta, the load generator application crashed and did not recover.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The load generated by system should increase.
ACTUAL -
The load generator crashed and did not recover.
All the code paths consuming StandardCharsets.charsetForName( show blocked threads

FREQUENCY : always