What is the difference between the three priorities used in the Linux kernel?

Question

I am new to the Linux kernel, and now I am studying the planning process in the Linux kernel. There are three types of priorities in Linux:

• Static priority
• Dynamic priority
• Real time priority

Now I realized that:

• Static priority and dynamic priority are defined only for ordinary processes , and they can take a value from 100 to 139.
• Static priority is used to determine the main time slice of the process.

• Dynamic priority is used to select the next process.

• Real-time priorities are determined only for real-time processes , and this value can vary from 0 to 99

Now my questions are:

• , , , ,    Linux    ?
• , 100 139 . ?
• Linux, , , - ?

Answer 1

. Linux ( Windows ). , , .

1. . ( 0 , .. ), . , :

`pthread_setschedparam(pthread_t thread, int policy, const struct sched_param *param);`

, sched_param :

struct sched_param 
{
    int sched_priority;     /* Scheduling priority */
};

2 . , , , , . / (, ) , . Linux .

3. . , () (SCHED_FIFO, SCHED_RR) sched_priority 1 () 99 (). / .

: http://man7.org/linux/man-pages/man3/pthread_getschedparam.3.html

, :

, , , , Linux ?

, , , , , /, .

, 100 139 . ?

, .

Linux, , , ?

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