> For the complete documentation index, see [llms.txt](https://docs.aios.foundation/aios-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aios.foundation/aios-docs/aios-kernel/scheduler/rrscheduler.md).

# RRScheduler

### RRScheduler

The Round Robin scheduler ensures fair distribution of processing time among tasks by limiting each task's execution time and cycling through all tasks.

#### Key Features

* Configurable time slice per task (default: 1 second)
* Fair CPU time distribution
* Support for suspending and resuming long-running tasks
* Preemptive scheduling

#### Core Functions

```python
def _execute_syscall(self, syscall, executor, syscall_type):
    try:
        syscall.set_time_limit(self.time_slice)
        syscall.set_status("executing")
        self.logger.log(f"{syscall.agent_name} is executing {syscall_type} syscall.\n", "executing")
        syscall.set_start_time(time.time())

        response = executor(syscall)
        syscall.set_response(response)
        
        if response.finished:
            syscall.set_status("done")
            log_status = "done"
        else:
            syscall.set_status("suspending")
            log_status = "suspending"

        syscall.set_end_time(time.time())
        syscall.event.set()
        
        self.logger.log(
            f"{syscall_type} syscall for {syscall.agent_name} is {log_status}. Thread ID: {syscall.get_pid()}\n",
            log_status
        )
        
        return response
    # Error handling omitted for brevity
```


---

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