What is Critical Thread Optimization?
A.
The ability to dynamically allocate core resources among active threads
B.
The ability to bind individual threads to a processor
C.
Part of the Processor Sets feature of Oracle Solaris that defines a group of logical processors
and schedules threads on them.
D.
Recognized by Oracle Solaris Scheduler as a thread that should run by itself on a single core
Correct Answer D
D
https://blogs.oracle.com/observatory/entry/critical_threads_optimization
D correct
I agree with you and get best answer why asnwer D.
Critical thread optimization.
Oracle Solaris 10 and 11 permit either a user or a programmer to allow the Oracle Solaris Scheduler to recognize a critical thread by means of raising its priority to 60 or above through the CLI or through system calls to a function. If this is done, that thread will run by itself on a single core, garnering all the resources of that core for itself. The one condition that would prevent this single thread from executing on a single core is when there are more runnable threads than available CPUs. This limit was put into place to prevent resource starvation of other threads. Further enhancements to critical thread optimization are planned for Oracle Solaris.