Currently, jcstress tests these configurations:
1) "default"
2) -Xint
3) -XX:TieredStopAtLevel=1
4) -XX:+UnlockDiagnosticVMOptions -XX:+StressLCM -XX:+StressGCM
5) -XX:-TieredCompilation
6) -XX:-TieredCompilation -XX:+UnlockDiagnosticVMOptions -XX:+StressLCM -XX:+StressGCM
Those were from the era when tiered compilation was not the default. Today, configurations (1) and (5) can be dropped to get int, C1, C2 configs only.
1) "default"
2) -Xint
3) -XX:TieredStopAtLevel=1
4) -XX:+UnlockDiagnosticVMOptions -XX:+StressLCM -XX:+StressGCM
5) -XX:-TieredCompilation
6) -XX:-TieredCompilation -XX:+UnlockDiagnosticVMOptions -XX:+StressLCM -XX:+StressGCM
Those were from the era when tiered compilation was not the default. Today, configurations (1) and (5) can be dropped to get int, C1, C2 configs only.