sched_rt_runtime_us Quantum allocated to real-time tasks during sched_rt_period_us. Setting to -1 disables RT bandwidth enforcement. By default, RT tasks may consume 95%CPU/sec, thus leaving 5%CPU/sec or 0.05s to be used by SCHED_OTHER tasks. The default value is950000(µs). sched...
而这个struct rt_bandwidth 中记录了用户指定的cpu.rt_runtime_us,cpu.rt_period_us。 staticinlineu64sched_rt_period(structrt_rq*rt_rq){returnktime_to_ns(rt_rq->tg->rt_bandwidth.rt_period);} 参考链接:https://docs.kernel.org/scheduler/sched-rt-group.html CONFIG_SMP 在多核心的环境下,需要...
2,cpu_cgroup (CONFIG_CGROUP_SCHED):這選項會支援Tasks能被群組(Group)化與依據設定切割群組佔用的處理器執行時間. 更進一步,還可以設定CONFIG_RT_GROUP_SCHED用以支援群組的 Real-Time排程(支援包括SCHED_FIFO與SCHED_RR). 與可以設定CONFIG_FAIR_GROUP_SCHED 用以支援群組的CFS排程機制(支援包括SCHED_NORMAL與SCH...
sched_child_runs_first:此文件指定了创建子进程时父进程和子进程之间的调度顺序。 sched_min_granularity_ns:此文件表示CFS调度器的最小调度粒度,即两个任务之间的最小时间间隔。 sched_rt_period_us:此文件指定了实时调度策略(SCHED_FIFO和SCHED_RR)下进程的运行周期。 sched_time_avg_ms:此文件表示CFS调度...
* /proc/sys/kernel/sched_rt_runtime_us */ extern unsigned int sysctl_sched_rt_period; extern int sysctl_sched_rt_runtime; extern unsigned int sysctl_sched_dl_period_max; extern unsigned int sysctl_sched_dl_period_min; #ifdef CONFIG_UCLAMP_TASK extern unsigned int sysctl_sched_uclamp...
unsigned int rt_period_active; }; void __dl_clear_params(struct task_struct *p); struct dl_bandwidth { raw_spinlock_t dl_runtime_lock; u64 dl_runtime; u64 dl_period; }; static inline int dl_bandwidth_enabled(void) { return sysctl_sched_rt_runtime >= 0; } /*...
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kernel.sched_latency_ns sched_latency_ns is the initial value for the scheduler period. The scheduler period is a period of time during which all runnable tasks should be allowed to run at least once. While CFS has no concept of time slices, you can think of the period as the ...
86#ifdef CONFIG_RT_GROUP_SCHED 87 init_tg_rt_entry(&root_task_group, &rq->...