当你在Linux系统中看到类似于”rcu_sched detected stalls on CPUs/tasks”的错误消息时,这表示系统检测到了针对RCU(Read-Copy-Update)机制的延迟。RCU是一种用于实现读写并发性的技术,在内核中广泛使用。 这个错误通常意味着在进行RCU更新时,某些CPU或任务被阻塞了较长时间,导致系统性能下降或出现其他问题。可能会...
有一份SDK,之前跑在PPC405EX上没问题。最近换平台,CPU使用了PowerPC的P1020,双核。 linux版本也升级到了3.0.48版本。升级之后出现了一个问题:SDK里面的程序跑一段时间之后会报告: INFO: rcu_sched_state detected stalls on CPUs/tasks: { 1} (detected by 0, t=15002 jiffies)。意思是CORE0检测到CORE1挂...
<3>[20866.897017] INFO: rcu_sched detected stalls on CPUs/tasks:<3>[20866.897049] 1: (1 GPs behind) idle=369/140000000000000/0 softirq=593036/593037 fqs=221951 <3>[20866.897057] (detected by 3, t=247997 jiffies, g=450146, c=450145, q=48413)<6>[20866.897072] Task dump for CPU 1:<...
NFO: rcu_sched_state detected stalls on CPUs/tasks: {15 } (detected by 4, 6002 jiffies,其余信息省略) 该环境没有开启rcu的callback线程,也就是rcu是在软中断中处理。 获取信息发现,有一个核的rcu的qlen已经达到了几百万,而且维持不变,也就是,既没有新的rcu挂在这个核,也没见这个核处理rcu。 查看...
Same issue on proxmox :( Originally posted by @polter05 in #1705 (comment) Home Assistant OS 9.5 Note: This is an issue which tracks CPU stalls on Proxmox. It is similar to #1705 which tracks such issues on VirtualBox, but likely a diffe...
INFO: rcu_sched_state detected stalls on CPUs/tasks: { 15} (detected by 17, t=15002 jiffies) 或 INFO: rcu_bh_state detected stalls on CPUs/tasks: { 3 5 } (detected by 2, 2502 jiffies) 等等。 在上述告警信息之后通常还会看到相关CPU的stack dump,检查stack trace有助于了解当时运行的代码和...
root@OpenWrt:/# [ 5860.656665] rcu: INFO: rcu_sched detected stalls on CPUs/tasks: [ 5860.662634] rcu: 1-...0: (163 ticks this GP) idle=6da/1/0x4000000000000000 softirq=15274/15277 fqs=846 [ 5860.672170] rcu: 3-...0: (88 ticks this GP) idle=63a/1/0x4000000000000000 softirq=184...
172 For non-RCU-tasks flavors of RCU, when a CPU detects that it is stalling, 173 it will print a message similar to the following: 174 175 INFO: rcu_sched detected stalls on CPUs/tasks: 176 2-...: (3 GPs behind) idle=06c/0/0 softirq=1453/1455 fqs=0 177 16-...: (0 ticks...
I'm getting "rcu_sched self-detected stall on CPU" errors in every VM at startup, and then if the VM's are under a heavy load, the proxmox host machine will also lockup and begin saying the same message. I'm not sure even how to figure out my root cause. Numerous google have ...
RK3588 NVR版本SDK编译的kernel出现rcu: INFO: rcu_sched detected stalls on CPUs/tasks问题。使用百度...