“rcu_sched detected stalls on cpus/tasks”是一条由Linux内核RCU(Read-Copy Update)机制发出的警告信息。RCU是一种用于提高数据读取效率的内核同步机制,适用于读多写少的场景。这条警告信息表明RCU机制在等待某些CPU或任务完成时发生了超时,即这些CPU或任务在处理RCU相关操作时停滞了过长时间。 2. 可能的原因 锁...
node[ 63.419185] rcu: INFO: rcu_sched detected stalls on CPUs/tasks:[ 63.419195] rcu:...
ha › (30157.0233571 rcu: INFO: rcu_preempt self-detected stall on CPU [30157.0283551 reu: 02-..: (2 ticks this GP) Idle-361/1/0x4000000000000002 softirq=283006/283006 fuss1. (30157.0302231 reu: reu preempt kthread starved for 288245252820 Jlfries? g745309 fOx0 RCULGP_MAIT_14S(5) -...
0-...: (2 GPs behind) idle=ba3/2/0 softirq=57744173/57744175 fqs=792613 (t=915060 jiffies g=633773 c=633772 q=122002) Task dump for CPU 0: swapper/0 R running 0 0 0 0x00100004 Stack : 0000001d 00000000 00000000 81070b60 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ...
INFO: rcu_preempt detected stalls on CPUs/tasks someone said at here: https://unix.stackexchange.com/questions/252045/rcu-preempt-detected-stalls-on-cpus-tasks-message-ap... is it right? more detail on how I can do to fix it? thank you very much.0...
[19311.929662] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:[19311.935738] rcu: 1-...!: (0 ticks this GP) idle=b8e/1/0x4000000000000000 softirq=4700/4700 fqs=0[19311.944673] (detected by 0, t=4826282 jiffies, g=825, q=6744)...
INFO: rcu_preempt_state detected stalls on CPUs/tasks: { 1} (detected by 3, t=3720597 jiffies) INFO: rcu_bh_state detected stalls on CPUs/tasks: { 1} (detected by 3, t=3720598 jiffies) INFO: rcu_preempt_state detected stalls on CPUs/tasks:...