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...
INFO: rcu_sched_state detected stalls on CPUs/tasks: { 1} (detected by 0, t=15002 jiffies)。意思是CORE0检测到CORE1挂了。 SDK里面使用了lock_kernel和unlock_kernel这一对大内核锁。由于3.0内核中不再存在上述锁。所以用 spinlock来替代。不知道上面的问题是否和这个改动有关?如果是的话,对于多核系统...
<3>[20803.847018] INFO: rcu_sched detected stalls on CPUs/tasks:<3>[20803.847051] 1: (1 GPs behind) idle=369/140000000000000/0 softirq=593036/593037 fqs=215772 <3>[20803.847060] (detected by 3, t=241692 jiffies, g=450146, c=450145, q=47215)<6>[20803.847075] Task dump for CPU 1:<...
for me this is the best solution, even if i didn't had stalls i would run unparked cpu's because that way i can utilize all of my cpu's cores at once. 👍 1 agners mentioned this issue Feb 6, 2023 rcu: INFO: rcu_sched self-detected stall on CPUs/tasks on Proxmux #2342 ...
root@OpenWrt:/# [ 184.045603] rcu: INFO: rcu_sched detected stalls on CPUs/tasks: [ 184.051575] rcu: 3-...0: (1 ticks this GP) idle=572/1/0x4000000000000000 softirq=5076/5076 fqs=935 [ 184.060757] (detected by 0, t=2102 jiffies, g=7101, q=25) ...
linux RCU https://zhuanlan.zhihu.com/p/570218921 [RCU stall] RCU stall 分析,RCU stall 内核文档翻译 https://www.cnblogs.com/
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...
This just started happening to me this week on servers that have never seen a problem. Today four of my VMs are all console-locked with the "rcu_sched self-detected stalls on..." . Important note however, they are all RUNNING just fine, I just no longer have console access. It kind...
[ 0.372438] Detected VIPT I-cache on CPU3 [ 0.372457] CPU3: Booted secondary processor 0x0000000003 [0x410fd034] [ 0.372501] smp: Brought up 1 node, 4 CPUs [ 0.402361] SMP: Total of 4 processors activated. [ 0.407035] CPU features: detected: 32-bit EL0 Support [ ...
2.Run stress testing inside guest #stress --vm 4 --vm-bytes 256M --vm-keep 3.Wait for the testing Actual results: Guest got CPus/tasks stalls [ 466.877503] INFO: rcu_sched detected stalls on CPUs/tasks: [ 466.900303] (detected by 0, t=6004 jiffies, g=3829, c=3828, q=814) [ ...