我的主板继续显示以下消息。
终端没有任何输入。
我知道以下消息是什么意思？ （T、g、c、q ...）
造成这种现象的原因是什么？
我该如何解决这个现象？
INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 0, t=3936547 jiffies, g=367023708, c=367023707, q=1511)
INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 2, t=3972552 jiffies, g=367023708, c=367023707, q=1511)
INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 1, t=4008557 jiffies, g=367023708, c=367023707, q=1511)
INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 1, t=4044562 jiffies, g=367023708, c=367023707, q=1511)
INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 2, t=4080567 jiffies, g=367023708, c=367023707, q=1511)
INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 0, t=4116572 jiffies, g=367023708, c=367023707, q=1511)
INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 1, t=4152577 jiffies, g=367023708, c=367023707, q=1511)
INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 0, t=4188582 jiffies, g=367023708, c=367023707, q=1511)
INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 1, t=4224587 jiffies, g=367023708, c=367023707, q=1511)
INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 1, t=4260592 jiffies, g=367023708, c=367023707, q=1511)
INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 1, t=4296597 jiffies, g=367023708, c=367023707, q=1511)
INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 2, t=4332602 jiffies, g=367023708, c=367023707, q=1511)
INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 2, t=4368607 jiffies, g=367023708, c=367023707, q=1511)
答案1
您可能有一个消耗所有 cpu 的实时应用程序（一些糟糕的实现），并且由于其实时调度优先级，系统没有足够的资源可用于其他任务。
我建议您从应用程序中删除实时优先级，并检查哪个应用程序消耗了大量 CPU，并在纠正问题后将其恢复为实时优先级